-/*******************************************************************************\r
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
- * in Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-package org.simantics.diagram.adapter;\r
-\r
-import gnu.trove.map.hash.TObjectIntHashMap;\r
-import gnu.trove.set.hash.THashSet;\r
-\r
-import java.awt.geom.AffineTransform;\r
-import java.lang.reflect.InvocationTargetException;\r
-import java.util.ArrayDeque;\r
-import java.util.ArrayList;\r
-import java.util.Arrays;\r
-import java.util.Collection;\r
-import java.util.Collections;\r
-import java.util.Comparator;\r
-import java.util.Deque;\r
-import java.util.EnumSet;\r
-import java.util.HashMap;\r
-import java.util.HashSet;\r
-import java.util.List;\r
-import java.util.Map;\r
-import java.util.Queue;\r
-import java.util.Set;\r
-import java.util.concurrent.ConcurrentHashMap;\r
-import java.util.concurrent.ConcurrentMap;\r
-import java.util.concurrent.atomic.AtomicBoolean;\r
-import java.util.concurrent.locks.Condition;\r
-import java.util.concurrent.locks.ReentrantLock;\r
-\r
-import org.eclipse.core.runtime.IProgressMonitor;\r
-import org.eclipse.core.runtime.SubMonitor;\r
-import org.simantics.db.AsyncReadGraph;\r
-import org.simantics.db.ReadGraph;\r
-import org.simantics.db.RequestProcessor;\r
-import org.simantics.db.Resource;\r
-import org.simantics.db.Session;\r
-import org.simantics.db.common.ResourceArray;\r
-import org.simantics.db.common.exception.DebugException;\r
-import org.simantics.db.common.procedure.adapter.AsyncProcedureAdapter;\r
-import org.simantics.db.common.procedure.adapter.CacheListener;\r
-import org.simantics.db.common.procedure.adapter.ListenerSupport;\r
-import org.simantics.db.common.procedure.adapter.ProcedureAdapter;\r
-import org.simantics.db.common.request.AsyncReadRequest;\r
-import org.simantics.db.common.request.ReadRequest;\r
-import org.simantics.db.common.session.SessionEventListenerAdapter;\r
-import org.simantics.db.common.utils.NameUtils;\r
-import org.simantics.db.exception.CancelTransactionException;\r
-import org.simantics.db.exception.DatabaseException;\r
-import org.simantics.db.exception.NoSingleResultException;\r
-import org.simantics.db.exception.ServiceException;\r
-import org.simantics.db.procedure.AsyncListener;\r
-import org.simantics.db.procedure.AsyncProcedure;\r
-import org.simantics.db.procedure.Listener;\r
-import org.simantics.db.procedure.Procedure;\r
-import org.simantics.db.request.Read;\r
-import org.simantics.db.service.SessionEventSupport;\r
-import org.simantics.diagram.connection.ConnectionSegmentEnd;\r
-import org.simantics.diagram.content.Change;\r
-import org.simantics.diagram.content.ConnectionUtil;\r
-import org.simantics.diagram.content.DesignatedTerminal;\r
-import org.simantics.diagram.content.DiagramContentChanges;\r
-import org.simantics.diagram.content.DiagramContents;\r
-import org.simantics.diagram.content.EdgeResource;\r
-import org.simantics.diagram.content.ResourceTerminal;\r
-import org.simantics.diagram.internal.DebugPolicy;\r
-import org.simantics.diagram.internal.timing.GTask;\r
-import org.simantics.diagram.internal.timing.Timing;\r
-import org.simantics.diagram.profile.ProfileKeys;\r
-import org.simantics.diagram.synchronization.CollectingModificationQueue;\r
-import org.simantics.diagram.synchronization.CompositeModification;\r
-import org.simantics.diagram.synchronization.CopyAdvisor;\r
-import org.simantics.diagram.synchronization.ErrorHandler;\r
-import org.simantics.diagram.synchronization.IHintSynchronizer;\r
-import org.simantics.diagram.synchronization.IModifiableSynchronizationContext;\r
-import org.simantics.diagram.synchronization.IModification;\r
-import org.simantics.diagram.synchronization.LogErrorHandler;\r
-import org.simantics.diagram.synchronization.ModificationAdapter;\r
-import org.simantics.diagram.synchronization.SynchronizationHints;\r
-import org.simantics.diagram.synchronization.graph.AddElement;\r
-import org.simantics.diagram.synchronization.graph.BasicResources;\r
-import org.simantics.diagram.synchronization.graph.DiagramGraphUtil;\r
-import org.simantics.diagram.synchronization.graph.ElementLoader;\r
-import org.simantics.diagram.synchronization.graph.ElementReorder;\r
-import org.simantics.diagram.synchronization.graph.ElementWriter;\r
-import org.simantics.diagram.synchronization.graph.GraphSynchronizationContext;\r
-import org.simantics.diagram.synchronization.graph.GraphSynchronizationHints;\r
-import org.simantics.diagram.synchronization.graph.ModificationQueue;\r
-import org.simantics.diagram.synchronization.graph.TagChange;\r
-import org.simantics.diagram.synchronization.graph.TransformElement;\r
-import org.simantics.diagram.synchronization.graph.layer.GraphLayer;\r
-import org.simantics.diagram.synchronization.graph.layer.GraphLayerManager;\r
-import org.simantics.diagram.ui.DiagramModelHints;\r
-import org.simantics.g2d.canvas.Hints;\r
-import org.simantics.g2d.canvas.ICanvasContext;\r
-import org.simantics.g2d.connection.ConnectionEntity;\r
-import org.simantics.g2d.connection.EndKeyOf;\r
-import org.simantics.g2d.connection.TerminalKeyOf;\r
-import org.simantics.g2d.diagram.DiagramClass;\r
-import org.simantics.g2d.diagram.DiagramHints;\r
-import org.simantics.g2d.diagram.DiagramMutator;\r
-import org.simantics.g2d.diagram.DiagramUtils;\r
-import org.simantics.g2d.diagram.IDiagram;\r
-import org.simantics.g2d.diagram.IDiagram.CompositionListener;\r
-import org.simantics.g2d.diagram.IDiagram.CompositionVetoListener;\r
-import org.simantics.g2d.diagram.handler.DataElementMap;\r
-import org.simantics.g2d.diagram.handler.ElementFactory;\r
-import org.simantics.g2d.diagram.handler.Relationship;\r
-import org.simantics.g2d.diagram.handler.RelationshipHandler;\r
-import org.simantics.g2d.diagram.handler.SubstituteElementClass;\r
-import org.simantics.g2d.diagram.handler.Topology;\r
-import org.simantics.g2d.diagram.handler.Topology.Connection;\r
-import org.simantics.g2d.diagram.handler.Topology.Terminal;\r
-import org.simantics.g2d.diagram.handler.TransactionContext.TransactionType;\r
-import org.simantics.g2d.diagram.impl.Diagram;\r
-import org.simantics.g2d.diagram.participant.ElementPainter;\r
-import org.simantics.g2d.element.ElementClass;\r
-import org.simantics.g2d.element.ElementHints;\r
-import org.simantics.g2d.element.ElementHints.DiscardableKey;\r
-import org.simantics.g2d.element.ElementUtils;\r
-import org.simantics.g2d.element.IElement;\r
-import org.simantics.g2d.element.IElementClassProvider;\r
-import org.simantics.g2d.element.handler.EdgeVisuals.EdgeEnd;\r
-import org.simantics.g2d.element.handler.ElementHandler;\r
-import org.simantics.g2d.element.handler.ElementLayerListener;\r
-import org.simantics.g2d.element.handler.TerminalTopology;\r
-import org.simantics.g2d.element.impl.Element;\r
-import org.simantics.g2d.layers.ILayer;\r
-import org.simantics.g2d.layers.ILayersEditor;\r
-import org.simantics.g2d.routing.RouterFactory;\r
-import org.simantics.scenegraph.INode;\r
-import org.simantics.scenegraph.profile.DataNodeConstants;\r
-import org.simantics.scenegraph.profile.DataNodeMap;\r
-import org.simantics.scenegraph.profile.common.ProfileObserver;\r
-import org.simantics.structural2.modelingRules.IModelingRules;\r
-import org.simantics.utils.datastructures.ArrayMap;\r
-import org.simantics.utils.datastructures.MapSet;\r
-import org.simantics.utils.datastructures.Pair;\r
-import org.simantics.utils.datastructures.disposable.AbstractDisposable;\r
-import org.simantics.utils.datastructures.hints.HintListenerAdapter;\r
-import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
-import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;\r
-import org.simantics.utils.datastructures.hints.IHintListener;\r
-import org.simantics.utils.datastructures.hints.IHintObservable;\r
-import org.simantics.utils.datastructures.map.AssociativeMap;\r
-import org.simantics.utils.datastructures.map.Associativity;\r
-import org.simantics.utils.datastructures.map.Tuple;\r
-import org.simantics.utils.strings.EString;\r
-import org.simantics.utils.threads.ThreadUtils;\r
-import org.simantics.utils.threads.logger.ITask;\r
-import org.simantics.utils.threads.logger.ThreadLogger;\r
-\r
-/**\r
- * This class loads a diagram contained in the graph database into the runtime\r
- * diagram model and synchronizes changes in the graph into the run-time\r
- * diagram. Any modifications to the graph model will be reflected to the\r
- * run-time diagram model. Hence the name GraphToDiagramSynchronizer.\r
- * \r
- * <p>\r
- * This class does not in itself support modification of the graph diagram\r
- * model. This manipulation is meant to be performed through a\r
- * {@link DiagramMutator} implementation that is installed into the diagram\r
- * using the {@link DiagramHints#KEY_MUTATOR} hint key.\r
- * \r
- * This implementations is built to only support diagrams defined in the graph\r
- * model as indicated in <a\r
- * href="https://www.simantics.org/wiki/index.php/Org.simantics.diagram" >this\r
- * </a> document.\r
- * \r
- * <p>\r
- * The synchronizer in itself is an {@link IDiagramLoader} which means that it\r
- * can be used for loading a diagram from the graph. In order for the\r
- * synchronizer to keep tracking the graph diagram model for changes the diagram\r
- * must be loaded with it. The tracking is implemented using graph database\r
- * queries. If you just want to load the diagram but detach it from the\r
- * synchronizer's tracking mechanisms, all you need to do is to dispose the\r
- * synchronizer after loading the diagram.\r
- * \r
- * <p>\r
- * This class guarantees that a single diagram element (IElement) representing a\r
- * single back-end object ({@link ElementHints#KEY_OBJECT}) will stay the same\r
- * object for the same back-end object.\r
- * \r
- * <p>\r
- * TODO: Currently it just happens that {@link GraphToDiagramSynchronizer}\r
- * contains {@link DefaultDiagramMutator} which depends on some internal details\r
- * of {@link GraphToDiagramSynchronizer} but it should be moved out of here by\r
- * introducing new interfaces.\r
- * \r
- * <h2>Basic usage example</h2>\r
- * <p>\r
- * This example shows how to initialize {@link GraphToDiagramSynchronizer} for a\r
- * specified {@link ICanvasContext} and load a diagram from a specified diagram\r
- * resource in the graph.\r
- * \r
- * <pre>\r
- * IDiagram loadDiagram(final ICanvasContext canvasContext, RequestProcessor processor, Resource diagramResource,\r
- * ResourceArray structuralPath) throws DatabaseException {\r
- * GraphToDiagramSynchronizer synchronizer = processor.syncRequest(new Read<GraphToDiagramSynchronizer>() {\r
- * public GraphToDiagramSynchronizer perform(ReadGraph graph) throws DatabaseException {\r
- * return new GraphToDiagramSynchronizer(graph, canvasContext, createElementClassProvider(graph));\r
- * }\r
- * });\r
- * IDiagram d = requestProcessor\r
- * .syncRequest(new DiagramLoadQuery(diagramResource, structuralPath, synchronizer, null));\r
- * return d;\r
- * }\r
- * \r
- * protected IElementClassProvider createElementClassProvider(ReadGraph graph) {\r
- * DiagramResource dr = DiagramResource.getInstance(graph);\r
- * return ElementClassProviders.mappedProvider(ElementClasses.CONNECTION, DefaultConnectionClassFactory.CLASS\r
- * .newClassWith(new ResourceAdapterImpl(dr.Connection)), ElementClasses.FLAG, FlagClassFactory\r
- * .createFlagClass(dr.Flag));\r
- * }\r
- * </pre>\r
- * \r
- * <p>\r
- * TODO: make GraphToDiagramSynchronizer a canvas participant to make it more\r
- * uniform with the rest of the canvas system. This does not mean that G2DS must\r
- * be attached to an ICanvasContext in order to be used, rather that it can be\r
- * attached to one.\r
- * \r
- * <p>\r
- * TODO: test that detaching the synchronizer via {@link #dispose()} actually\r
- * works.\r
- * <p>\r
- * TODO: remove {@link DefaultDiagramMutator} and all {@link DiagramMutator}\r
- * stuff altogether\r
- * \r
- * <p>\r
- * TODO: diagram connection loading has no listener\r
- * \r
- * @author Tuukka Lehtonen\r
- * \r
- * @see GraphElementClassFactory\r
- * @see GraphElementFactory\r
- * @see ElementLoader\r
- * @see ElementWriter\r
- * @see IHintSynchronizer\r
- * @see CopyAdvisor\r
- */\r
-public class GraphToDiagramSynchronizer extends AbstractDisposable implements IDiagramLoader, IModifiableSynchronizationContext {\r
-\r
- /**\r
- * Controls whether the class adds hint listeners to each diagram element\r
- * that try to perform basic sanity checks on changes happening in element\r
- * hints. Having this will immediately inform you of bugs that corrupt the\r
- * diagram model within the element hints in some way.\r
- */\r
- private static final boolean USE_ELEMENT_VALIDATING_LISTENERS = false;\r
-\r
- /**\r
- * These keys are used to hang on to Connection instances of edges that will\r
- * be later installed as EndKeyOf/TerminalKeyOf hints into the loaded\r
- * element during the "graph to diagram update transaction".\r
- */\r
- private static final Key KEY_CONNECTION_BEGIN_PLACEHOLDER = new KeyOf(PlaceholderConnection.class, "CONNECTION_BEGIN_PLACEHOLDER");\r
- private static final Key KEY_CONNECTION_END_PLACEHOLDER = new KeyOf(PlaceholderConnection.class, "CONNECTION_END_PLACEHOLDER");\r
-\r
- /**\r
- * Stored into an edge node during connection edge requests using the\r
- * KEY_CONNECTION_BEGIN_PLACEHOLDER and KEY_CONNECTION_END_PLACEHOLDER keys.\r
- */\r
- static class PlaceholderConnection {\r
- public final EdgeEnd end;\r
- public final Object node;\r
- public final Terminal terminal;\r
- public PlaceholderConnection(EdgeEnd end, Object node, Terminal terminal) {\r
- this.end = end;\r
- this.node = node;\r
- this.terminal = terminal;\r
- }\r
- }\r
-\r
- /**\r
- * Indicates to the diagram CompositionListener of this synchronizer that is\r
- * should deny all relationships for the element this hint is attached to.\r
- */\r
- private static final Key KEY_REMOVE_RELATIONSHIPS = new KeyOf(Boolean.class, "REMOVE_RELATIONSHIPS");\r
-\r
- static ErrorHandler errorHandler = LogErrorHandler.INSTANCE;\r
-\r
- /**\r
- * The canvas context which is being synchronized with the graph. Received\r
- * during construction.\r
- * \r
- * <p>\r
- * Is not nulled during disposal of this class since internal listener's\r
- * life-cycles depend on canvas.isDisposed.\r
- */\r
- ICanvasContext canvas;\r
-\r
- /**\r
- * The session used by this synchronizer. Received during construction.\r
- */\r
- Session session;\r
-\r
- /**\r
- * Locked while updating diagram contents from the graph.\r
- */\r
- ReentrantLock diagramUpdateLock = new ReentrantLock();\r
-\r
- // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\r
- // BI-DIRECTIONAL DIAGRAM ELEMENT <-> BACKEND OBJECT MAPPING BEGIN\r
- // ------------------------------------------------------------------------\r
-\r
- /**\r
- * Holds a GraphToDiagramUpdater instance while a diagram content update is\r
- * currently in progress.\r
- *\r
- * <p>\r
- * Basically this is a hack solution to the problem of properly finding\r
- * newly added Resource<->IElement mappings while loading the diagram\r
- * contents. See {@link DataElementMapImpl} for why this is necessary.\r
- */\r
- GraphToDiagramUpdater currentUpdater = null;\r
-\r
- /**\r
- * A map from data objects to elements. Elements should already contain the\r
- * data objects as {@link ElementHints#KEY_OBJECT} hints.\r
- */\r
- ConcurrentMap<Object, IElement> dataElement = new ConcurrentHashMap<Object, IElement>();\r
-\r
- /**\r
- * Temporary structure for single-threaded use in #{@link DiagramUpdater}.\r
- */\r
- Collection<Connection> tempConnections = new ArrayList<Connection>();\r
-\r
- /**\r
- * A dummy class of which an instance will be given to each new edge element\r
- * to make {@link TerminalKeyOf} keys unique for each edge.\r
- */\r
- static class TransientElementObject {\r
- @Override\r
- public String toString() {\r
- return "MUTATOR GENERATED (hash=" + System.identityHashCode(this) + ")";\r
- }\r
- }\r
-\r
- private static class ConnectionChildren {\r
- public Set<IElement> branchPoints;\r
- public Set<IElement> segments;\r
-\r
- public ConnectionChildren(Set<IElement> branchPoints, Set<IElement> segments) {\r
- this.branchPoints = branchPoints;\r
- this.segments = segments;\r
- }\r
- }\r
-\r
- ListenerSupport canvasListenerSupport = new ListenerSupport() {\r
- @Override\r
- public void exception(Throwable t) {\r
- error(t);\r
- }\r
-\r
- @Override\r
- public boolean isDisposed() {\r
- return !isAlive() || canvas.isDisposed();\r
- }\r
- };\r
-\r
- /**\r
- * @see ElementHints#KEY_CONNECTION_ENTITY\r
- */\r
- class ConnectionEntityImpl implements ConnectionEntity {\r
-\r
- /**\r
- * The connection instance resource in the graph backend.\r
- *\r
- * May be <code>null</code> if the connection has not been synchronized\r
- * yet.\r
- */\r
- Resource connection;\r
-\r
- /**\r
- * The connection type resource in the graph backend.\r
- *\r
- * May be <code>null</code> if the connection has not been synchronized\r
- * yet.\r
- */\r
- Resource connectionType;\r
-\r
- /**\r
- * The connection entity element which is a part of the diagram.\r
- */\r
- IElement connectionElement;\r
-\r
- /**\r
- * List of backend-synchronized branch points that are part of this\r
- * connection.\r
- */\r
- Collection<Resource> branchPoints = Collections.emptyList();\r
-\r
- /**\r
- * List of backend-synchronized edges that are part of this connection.\r
- */\r
- Collection<EdgeResource> segments = Collections.emptyList();\r
-\r
- Set<Object> removedBranchPoints = new HashSet<Object>(4);\r
-\r
- Set<Object> removedSegments = new HashSet<Object>(4);\r
-\r
- /**\r
- * List of non-backend-synchronized branch point element that are part\r
- * of this connection.\r
- */\r
- List<IElement> branchPointElements = new ArrayList<IElement>(1);\r
-\r
- /**\r
- * List of non-backend-synchronized edge element that are part of this\r
- * connection.\r
- */\r
- List<IElement> segmentElements = new ArrayList<IElement>(2);\r
-\r
- ConnectionListener listener;\r
-\r
- ConnectionEntityImpl(Resource connection, Resource connectionType, IElement connectionElement) {\r
- this.connection = connection;\r
- this.connectionType = connectionType;\r
- this.connectionElement = connectionElement;\r
- }\r
-\r
- ConnectionEntityImpl(Resource connectionType, IElement connectionElement) {\r
- this.connectionType = connectionType;\r
- this.connectionElement = connectionElement;\r
- }\r
-\r
- ConnectionEntityImpl(ReadGraph graph, Resource connection, IElement connectionElement)\r
- throws NoSingleResultException, ServiceException {\r
- this.connection = connection;\r
- this.connectionType = graph.getSingleType(connection, br.DIA.Connection);\r
- this.connectionElement = connectionElement;\r
- }\r
-\r
- @Override\r
- public IElement getConnection() {\r
- return connectionElement;\r
- }\r
-\r
- public Object getConnectionObject() {\r
- return connection;\r
- }\r
-\r
- public IElement getConnectionElement() {\r
- if (connectionElement == null)\r
- return getMappedConnectionElement();\r
- return connectionElement;\r
- }\r
-\r
- private IElement getMappedConnectionElement() {\r
- IElement ce = null;\r
- if (connection != null)\r
- ce = getMappedElement(connection);\r
- return ce == null ? connectionElement : ce;\r
- }\r
-\r
- void fix() {\r
- Collection<IElement> segments = getSegments(null);\r
-\r
- // Remove all TerminalKeyOf hints from branch points that do not\r
- // match\r
- ArrayList<TerminalKeyOf> pruned = null;\r
- for (IElement bp : getBranchPoints(null)) {\r
- if (pruned == null)\r
- pruned = new ArrayList<TerminalKeyOf>(4);\r
- pruned.clear();\r
- for (Map.Entry<TerminalKeyOf, Object> entry : bp.getHintsOfClass(TerminalKeyOf.class).entrySet()) {\r
- // First check that the terminal matches.\r
- Connection c = (Connection) entry.getValue();\r
- if (!segments.contains(c.edge))\r
- pruned.add(entry.getKey());\r
- }\r
- removeNodeTopologyHints((Element) bp, pruned);\r
- }\r
- }\r
-\r
- public ConnectionChildren getConnectionChildren() {\r
- Set<IElement> bps = Collections.emptySet();\r
- Set<IElement> segs = Collections.emptySet();\r
- if (!branchPoints.isEmpty()) {\r
- bps = new HashSet<IElement>(branchPoints.size());\r
- for (Resource bp : branchPoints) {\r
- IElement e = getMappedElement(bp);\r
- if (e != null)\r
- bps.add(e);\r
- }\r
- }\r
- if (!segments.isEmpty()) {\r
- segs = new HashSet<IElement>(segments.size());\r
- for (EdgeResource seg : segments) {\r
- IElement e = getMappedElement(seg);\r
- if (e != null)\r
- segs.add(e);\r
- }\r
- }\r
- return new ConnectionChildren(bps, segs);\r
- }\r
-\r
- public void setData(Collection<EdgeResource> segments, Collection<Resource> branchPoints) {\r
- // System.out.println("setData " + segments.size());\r
- this.branchPoints = branchPoints;\r
- this.segments = segments;\r
-\r
- // Reset the added/removed state of segments and branchpoints.\r
- this.removedBranchPoints = new HashSet<Object>(4);\r
- this.removedSegments = new HashSet<Object>(4);\r
- this.branchPointElements = new ArrayList<IElement>(4);\r
- this.segmentElements = new ArrayList<IElement>(4);\r
- }\r
-\r
- public void fireListener(ConnectionChildren old, ConnectionChildren current) {\r
- if (listener != null) {\r
- List<IElement> removed = new ArrayList<IElement>();\r
- List<IElement> added = new ArrayList<IElement>();\r
-\r
- for (IElement oldBp : old.branchPoints)\r
- if (!current.branchPoints.contains(oldBp))\r
- removed.add(oldBp);\r
- for (IElement oldSeg : old.segments)\r
- if (!current.segments.contains(oldSeg))\r
- removed.add(oldSeg);\r
-\r
- for (IElement bp : current.branchPoints)\r
- if (!old.branchPoints.contains(bp))\r
- added.add(bp);\r
- for (IElement seg : current.segments)\r
- if (!old.segments.contains(seg))\r
- added.add(seg);\r
-\r
- if (!removed.isEmpty() || !added.isEmpty()) {\r
- listener.connectionChanged(new ConnectionEvent(this.connectionElement, removed, added));\r
- }\r
- }\r
- }\r
-\r
- @Override\r
- public Collection<IElement> getBranchPoints(Collection<IElement> result) {\r
- if (result == null)\r
- result = new ArrayList<IElement>(branchPoints.size());\r
- for (Resource bp : branchPoints) {\r
- if (!removedBranchPoints.contains(bp)) {\r
- IElement e = getMappedElement(bp);\r
- if (e != null)\r
- result.add(e);\r
- }\r
- }\r
- result.addAll(branchPointElements);\r
- return result;\r
- }\r
-\r
- @Override\r
- public Collection<IElement> getSegments(Collection<IElement> result) {\r
- if (result == null)\r
- result = new ArrayList<IElement>(segments.size());\r
- for (EdgeResource seg : segments) {\r
- if (!removedSegments.contains(seg)) {\r
- IElement e = getMappedElement(seg);\r
- if (e != null)\r
- result.add(e);\r
- }\r
- }\r
- result.addAll(segmentElements);\r
- return result;\r
- }\r
-\r
- @Override\r
- public Collection<Connection> getTerminalConnections(Collection<Connection> result) {\r
- if (result == null)\r
- result = new ArrayList<Connection>(segments.size() * 2);\r
- Set<org.simantics.utils.datastructures.Pair<IElement, Terminal>> processed = new HashSet<org.simantics.utils.datastructures.Pair<IElement, Terminal>>();\r
- for (EdgeResource seg : segments) {\r
- IElement edge = getMappedElement(seg);\r
- if (edge != null) {\r
- for (EndKeyOf key : EndKeyOf.KEYS) {\r
- Connection c = edge.getHint(key);\r
- if (c != null && (c.terminal instanceof ResourceTerminal) && processed.add(Pair.make(c.node, c.terminal)))\r
- result.add(c);\r
- }\r
- }\r
- }\r
- return result;\r
- }\r
-\r
- @Override\r
- public void setListener(ConnectionListener listener) {\r
- this.listener = listener;\r
- }\r
-\r
- @Override\r
- public String toString() {\r
- return getClass().getSimpleName() + "[resource=" + connection + ", branch points=" + branchPoints\r
- + ", segments=" + segments + ", connectionElement=" + connectionElement\r
- + ", branch point elements=" + branchPointElements + ", segment elements=" + segmentElements\r
- + ", removed branch points=" + removedBranchPoints + ", removed segments=" + removedSegments + "]";\r
- }\r
-\r
- }\r
-\r
- /**\r
- * A map from connection data objects to connection entities. The connection\r
- * part elements should already contain the data objects as\r
- * {@link ElementHints#KEY_OBJECT} hints.\r
- */\r
- ConcurrentMap<Object, ConnectionEntityImpl> dataConnection = new ConcurrentHashMap<Object, ConnectionEntityImpl>();\r
-\r
- /**\r
- * @param data\r
- * @param element\r
- */\r
- void mapElement(final Object data, final IElement element) {\r
- if (!(element instanceof Element)) {\r
- throw new IllegalArgumentException("mapElement: expected instance of Element, got " + element + " with data " + data);\r
- }\r
- assert data != null;\r
- assert element != null;\r
- if (DebugPolicy.DEBUG_MAPPING)\r
- new Exception(Thread.currentThread() + " MAPPING: " + data + " -> " + element).printStackTrace();\r
- dataElement.put(data, element);\r
- }\r
-\r
- /**\r
- * @param data\r
- * @return\r
- */\r
- IElement getMappedElement(final Object data) {\r
- assert (data != null);\r
- IElement element = dataElement.get(data);\r
- return element;\r
- }\r
-\r
- IElement getMappedElementByElementObject(IElement e) {\r
- if (e == null)\r
- return null;\r
- Object o = e.getHint(ElementHints.KEY_OBJECT);\r
- if (o == null)\r
- return null;\r
- return getMappedElement(o);\r
- }\r
-\r
- /**\r
- * @param data\r
- * @return\r
- */\r
- IElement assertMappedElement(final Object data) {\r
- IElement element = dataElement.get(data);\r
- assert element != null;\r
- return element;\r
- }\r
-\r
- /**\r
- * @param data\r
- * @return\r
- */\r
- IElement unmapElement(final Object data) {\r
- IElement element = dataElement.remove(data);\r
- if (DebugPolicy.DEBUG_MAPPING)\r
- new Exception(Thread.currentThread() + " UN-MAPPED: " + data + " -> " + element).printStackTrace();\r
- return element;\r
- }\r
-\r
- /**\r
- * @param data\r
- * @param element\r
- */\r
- void mapConnection(final Object data, final ConnectionEntityImpl connection) {\r
- assert data != null;\r
- assert connection != null;\r
- if (DebugPolicy.DEBUG_MAPPING)\r
- System.out.println(Thread.currentThread() + " MAPPING CONNECTION: " + data + " -> " + connection);\r
- dataConnection.put(data, connection);\r
- }\r
-\r
- /**\r
- * @param data\r
- * @return\r
- */\r
- ConnectionEntityImpl getMappedConnection(final Object data) {\r
- ConnectionEntityImpl connection = dataConnection.get(data);\r
- return connection;\r
- }\r
-\r
- /**\r
- * @param data\r
- * @return\r
- */\r
- ConnectionEntityImpl assertMappedConnection(final Object data) {\r
- ConnectionEntityImpl connection = getMappedConnection(data);\r
- assert connection != null;\r
- return connection;\r
- }\r
-\r
- /**\r
- * @param data\r
- * @return\r
- */\r
- ConnectionEntityImpl unmapConnection(final Object data) {\r
- ConnectionEntityImpl connection = dataConnection.remove(data);\r
- if (DebugPolicy.DEBUG_MAPPING)\r
- System.out.println(Thread.currentThread() + " UN-MAPPED CONNECTION: " + data + " -> " + connection);\r
- return connection;\r
- }\r
-\r
- class DataElementMapImpl implements DataElementMap {\r
- @Override\r
- public Object getData(IDiagram d, IElement element) {\r
- if (d == null)\r
- throw new NullPointerException("null diagram");\r
- if (element == null)\r
- throw new NullPointerException("null element");\r
-\r
- assert ElementUtils.getDiagram(element) == d;\r
- return element.getHint(ElementHints.KEY_OBJECT);\r
- }\r
-\r
- @Override\r
- public IElement getElement(IDiagram d, Object data) {\r
- if (d == null)\r
- throw new NullPointerException("null diagram");\r
- if (data == null)\r
- throw new NullPointerException("null data");\r
-\r
- GraphToDiagramUpdater updater = currentUpdater;\r
- if (updater != null) {\r
- // This HACK is for allowing GraphElementFactory implementations\r
- // to find the IElements they are related to.\r
- IElement e = updater.addedElementMap.get(data);\r
- if (e != null)\r
- return e;\r
- }\r
-\r
- IElement e = getMappedElement(data);\r
- if (e != null)\r
- return e;\r
- return null;\r
- }\r
- }\r
-\r
- class SubstituteElementClassImpl implements SubstituteElementClass {\r
- @Override\r
- public ElementClass substitute(IDiagram d, ElementClass ec) {\r
- if (d != diagram)\r
- throw new IllegalArgumentException("specified diagram does not have this SubstituteElementClass handler");\r
-\r
- // If the element class is our own, there's no point in creating\r
- // a copy of it.\r
- if (ec.contains(elementLayerListener))\r
- return ec;\r
-\r
- List<ElementHandler> all = ec.getAll();\r
- List<ElementHandler> result = new ArrayList<ElementHandler>(all.size());\r
- for (ElementHandler eh : all) {\r
- if (eh instanceof ElementLayerListenerImpl)\r
- result.add(elementLayerListener);\r
- else\r
- result.add(eh);\r
- }\r
- return ElementClass.compile(result).setId(ec.getId());\r
- }\r
- }\r
-\r
- final DataElementMapImpl dataElementMap = new DataElementMapImpl();\r
-\r
- final SubstituteElementClassImpl substituteElementClass = new SubstituteElementClassImpl();\r
-\r
- // ------------------------------------------------------------------------\r
- // BI-DIRECTIONAL DIAGRAM ELEMENT <-> BACKEND OBJECT MAPPING END\r
- // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r
-\r
- void warning(String message, Exception e) {\r
- errorHandler.warning(message, e);\r
- }\r
-\r
- void warning(Exception e) {\r
- errorHandler.warning(e.getMessage(), e);\r
- }\r
-\r
- void error(String message, Throwable e) {\r
- errorHandler.error(message, e);\r
- }\r
-\r
- void error(Throwable e) {\r
- errorHandler.error(e.getMessage(), e);\r
- }\r
-\r
- // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\r
- // GRAPH MODIFICATION QUEUE BEGIN\r
- // ------------------------------------------------------------------------\r
-\r
- ModificationQueue modificationQueue;\r
- IModifiableSynchronizationContext synchronizationContext;\r
-\r
- @Override\r
- public <T> T set(Key key, Object value) {\r
- if (synchronizationContext == null)\r
- return null;\r
- return synchronizationContext.set(key, value);\r
- }\r
-\r
- @Override\r
- public <T> T get(Key key) {\r
- if (synchronizationContext == null)\r
- return null;\r
- return synchronizationContext.get(key);\r
- }\r
-\r
- // ------------------------------------------------------------------------\r
- // GRAPH MODIFICATION QUEUE END\r
- // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r
-\r
- /**\r
- * The previously loaded version of the diagram content. This is needed to\r
- * calculate the difference between new and old content on each\r
- * {@link #diagramGraphUpdater(DiagramContents)} invocation.\r
- */\r
- DiagramContents previousContent;\r
-\r
- /**\r
- * The diagram instance that this synchronizer is synchronizing with the\r
- * graph.\r
- */\r
- IDiagram diagram;\r
-\r
- /**\r
- * An observer for diagram profile entries. Has a life-cycle that must be\r
- * bound to the life-cycle of this GraphToDiagramSynchronizer instance.\r
- * Disposed if synchronizer is detached in {@link #doDispose()} or finally\r
- * when the canvas is disposed.\r
- */\r
- ProfileObserver profileObserver;\r
-\r
- IElementClassProvider elementClassProvider;\r
-\r
- BasicResources br;\r
-\r
- // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\r
- // Internal state machine handling BEGIN\r
- // ------------------------------------------------------------------------\r
-\r
- /**\r
- * An indicator for the current state of this synchronizer. This is a simple\r
- * state machine with the following possible state transitions:\r
- *\r
- * <ul>\r
- * <li>INITIAL -> LOADING, DISPOSED</li>\r
- * <li>LOADING -> IDLE</li>\r
- * <li>IDLE -> UPDATING_DIAGRAM, DISPOSED</li>\r
- * <li>UPDATING_DIAGRAM -> IDLE</li>\r
- * </ul>\r
- * \r
- * Start states: INITIAL\r
- * End states: DISPOSED\r
- */\r
- static enum State {\r
- /**\r
- * The initial state of the synchronizer.\r
- */\r
- INITIAL,\r
- /**\r
- * The synchronizer is performing load-time initialization. During this\r
- * time no canvas refreshes should be forced.\r
- */\r
- LOADING,\r
- /**\r
- * The synchronizer is performing updates to the diagram model. This\r
- * process goes on in the canvas context thread.\r
- */\r
- UPDATING_DIAGRAM,\r
- /**\r
- * The synchronizer is doing nothing.\r
- */\r
- IDLE,\r
- /**\r
- * The synchronized diagram is being disposed, which means that this\r
- * synchronizer should not accept any further actions.\r
- */\r
- DISPOSED,\r
- }\r
-\r
- public static final EnumSet<State> FROM_INITIAL = EnumSet.of(State.LOADING, State.DISPOSED);\r
- public static final EnumSet<State> FROM_LOADING = EnumSet.of(State.IDLE);\r
- public static final EnumSet<State> FROM_UPDATING_DIAGRAM = EnumSet.of(State.IDLE);\r
- public static final EnumSet<State> FROM_IDLE = EnumSet.of(State.UPDATING_DIAGRAM, State.DISPOSED);\r
- public static final EnumSet<State> NO_STATES = EnumSet.noneOf(State.class);\r
-\r
- private EnumSet<State> validTargetStates(State start) {\r
- switch (start) {\r
- case INITIAL: return FROM_INITIAL;\r
- case LOADING: return FROM_LOADING;\r
- case UPDATING_DIAGRAM: return FROM_UPDATING_DIAGRAM;\r
- case IDLE: return FROM_IDLE;\r
- case DISPOSED: return NO_STATES;\r
- }\r
- throw new IllegalArgumentException("unrecognized state " + start);\r
- }\r
-\r
- private String validateStateChange(State start, State end) {\r
- EnumSet<State> validTargets = validTargetStates(start);\r
- if (!validTargets.contains(end))\r
- return "Cannot transition from " + start + " state to " + end + ".";\r
- return null;\r
- }\r
-\r
- /**\r
- * The current state of the synchronizer. At start it is\r
- * {@link State#INITIAL} and after loading it is {@link State#IDLE}.\r
- */\r
- State synchronizerState = State.INITIAL;\r
-\r
- /**\r
- * A condition variable used to synchronize synchronizer state changes.\r
- */\r
- ReentrantLock stateLock = new ReentrantLock();\r
-\r
- /**\r
- * A condition that is signaled when the synchronizer state changes to IDLE.\r
- */\r
- Condition idleCondition = stateLock.newCondition();\r
-\r
- State getState() {\r
- return synchronizerState;\r
- }\r
-\r
- /**\r
- * Activates the desired state after making sure that the synchronizer has\r
- * been IDLE in between its current state and this invocation.\r
- *\r
- * @param newState the new state to activate\r
- * @throws InterruptedException if waiting for IDLE state gets interrupted\r
- * @throws IllegalStateException if the requested transition from the\r
- * current state to the desired state would be illegal.\r
- */\r
- void activateState(State newState, boolean waitForIdle) throws InterruptedException {\r
- stateLock.lock();\r
- try {\r
- // Wait until the state of the synchronizer IDLEs if necessary.\r
- if (waitForIdle && synchronizerState != State.IDLE) {\r
- String error = validateStateChange(synchronizerState, State.IDLE);\r
- if (error != null)\r
- throw new IllegalStateException(error);\r
-\r
- while (synchronizerState != State.IDLE) {\r
- if (DebugPolicy.DEBUG_STATE)\r
- System.out.println(Thread.currentThread() + " waiting for IDLE state, current="\r
- + synchronizerState);\r
- idleCondition.await();\r
- }\r
- }\r
-\r
- String error = validateStateChange(synchronizerState, newState);\r
- if (error != null)\r
- throw new IllegalStateException(error);\r
-\r
- if (DebugPolicy.DEBUG_STATE)\r
- System.out.println(Thread.currentThread() + " activated state " + newState);\r
- this.synchronizerState = newState;\r
-\r
- if (newState == State.IDLE)\r
- idleCondition.signalAll();\r
- } finally {\r
- stateLock.unlock();\r
- }\r
- }\r
-\r
- void idle() throws IllegalStateException, InterruptedException {\r
- activateState(State.IDLE, false);\r
- }\r
-\r
- static interface StateRunnable extends Runnable {\r
- void execute() throws InvocationTargetException;\r
-\r
- public abstract class Stub implements StateRunnable {\r
- @Override\r
- public void run() {\r
- }\r
-\r
- @Override\r
- public final void execute() throws InvocationTargetException {\r
- try {\r
- perform();\r
- } catch (Exception e) {\r
- throw new InvocationTargetException(e);\r
- } catch (LinkageError e) {\r
- throw new InvocationTargetException(e);\r
- }\r
- }\r
-\r
- protected abstract void perform() throws Exception;\r
- }\r
- }\r
-\r
- protected void runInState(State state, StateRunnable runnable) throws InvocationTargetException {\r
- try {\r
- activateState(state, true);\r
- try {\r
- runnable.execute();\r
- } finally {\r
- idle();\r
- }\r
- } catch (IllegalStateException e) {\r
- throw new InvocationTargetException(e);\r
- } catch (InterruptedException e) {\r
- throw new InvocationTargetException(e);\r
- }\r
- }\r
-\r
- protected void safeRunInState(State state, StateRunnable runnable) {\r
- try {\r
- runInState(state, runnable);\r
- } catch (InvocationTargetException e) {\r
- error("Failed to run runnable " + runnable + " in state " + state + ". See exception for details.", e\r
- .getCause());\r
- }\r
- }\r
-\r
- // ------------------------------------------------------------------------\r
- // Internal state machine handling END\r
- // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r
-\r
- /**\r
- * @param processor\r
- * @param canvas\r
- * @param elementClassProvider\r
- * @throws DatabaseException\r
- */\r
- public GraphToDiagramSynchronizer(RequestProcessor processor, ICanvasContext canvas, IElementClassProvider elementClassProvider) throws DatabaseException {\r
- if (processor == null)\r
- throw new IllegalArgumentException("null processor");\r
- if (canvas == null)\r
- throw new IllegalArgumentException("null canvas");\r
- if (elementClassProvider == null)\r
- throw new IllegalArgumentException("null element class provider");\r
-\r
- this.session = processor.getSession();\r
- this.canvas = canvas;\r
- this.modificationQueue = new ModificationQueue(session, errorHandler);\r
-\r
- processor.syncRequest(new ReadRequest() {\r
- @Override\r
- public void run(ReadGraph graph) throws DatabaseException {\r
- initializeResources(graph);\r
- }\r
- });\r
-\r
- this.elementClassProvider = elementClassProvider;\r
- synchronizationContext.set(SynchronizationHints.ELEMENT_CLASS_PROVIDER, elementClassProvider);\r
-\r
- attachSessionListener(processor.getSession());\r
- }\r
-\r
- /**\r
- * @return\r
- */\r
- public IElementClassProvider getElementClassProvider() {\r
- return elementClassProvider;\r
- }\r
-\r
- public Session getSession() {\r
- return session;\r
- }\r
-\r
- public ICanvasContext getCanvasContext() {\r
- return canvas;\r
- }\r
-\r
- public IDiagram getDiagram() {\r
- return diagram;\r
- }\r
-\r
- void setCanvasDirty() {\r
- ICanvasContext c = canvas;\r
- if (synchronizerState != State.LOADING && c != null && !c.isDisposed()) {\r
- // TODO: Consider adding an invocation limiter here, to prevent\r
- // calling setDirty too often if enough time hasn't passed yet since\r
- // the last invocation.\r
- c.getContentContext().setDirty();\r
- }\r
- }\r
-\r
- /**\r
- * @param elementType\r
- * @return\r
- * @throws DatabaseException if ElementClass cannot be retrieved\r
- */\r
- public ElementClass getNodeClass(Resource elementType) throws DatabaseException {\r
- return getNodeClass(session, elementType);\r
- }\r
-\r
- public ElementClass getNodeClass(RequestProcessor processor, Resource elementType) throws DatabaseException {\r
- ElementClass ec = processor.syncRequest(new NodeClassRequest(canvas, diagram, elementType, true));\r
- return ec;\r
- }\r
-\r
- @Override\r
- protected void doDispose() {\r
- try {\r
- try {\r
- stateLock.lock();\r
- boolean isInitial = getState() == State.INITIAL;\r
- activateState(State.DISPOSED, !isInitial);\r
- } finally {\r
- stateLock.unlock();\r
- }\r
- } catch (InterruptedException e) {\r
- // Shouldn't happen.\r
- e.printStackTrace();\r
- } finally {\r
- detachSessionListener();\r
-\r
- if (profileObserver != null) {\r
- profileObserver.dispose();\r
- profileObserver = null;\r
- }\r
-\r
- if (diagram != null) {\r
- diagram.removeCompositionListener(diagramListener);\r
- diagram.removeCompositionVetoListener(diagramListener);\r
- }\r
-\r
- // TODO: we should probably leave the dataElement map as is since DataElementMap needs it even after the synchronizer has been disposed.\r
- // Currently the diagram's DataElementMap will be broken after disposal.\r
-// dataElement.clear();\r
-// dataConnection.clear();\r
-\r
- if (layerManager != null) {\r
- layerManager.dispose();\r
- }\r
-\r
- // Let GC work.\r
- modificationQueue.dispose();\r
- }\r
- }\r
-\r
- void initializeResources(ReadGraph graph) {\r
- this.br = new BasicResources(graph);\r
-\r
- // Initialize synchronization context\r
- synchronizationContext = new GraphSynchronizationContext(graph, modificationQueue);\r
- synchronizationContext.set(SynchronizationHints.ERROR_HANDLER, errorHandler);\r
- }\r
-\r
- // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\r
- // LAYERS BEGIN\r
- // ------------------------------------------------------------------------\r
-\r
- GraphLayerManager layerManager;\r
-\r
- /**\r
- * A common handler for all elements that is used to listen to changes in\r
- * element visibility and focusability on diagram layers.\r
- */\r
- class ElementLayerListenerImpl implements ElementLayerListener {\r
- private static final long serialVersionUID = -3410052116598828129L;\r
-\r
- @Override\r
- public void visibilityChanged(IElement e, ILayer layer, boolean visible) {\r
- if (!isAlive())\r
- return;\r
- if (DebugPolicy.DEBUG_LAYERS)\r
- System.out.println("visibility changed: " + e + ", " + layer + ", " + visible);\r
- GraphLayer gl = layerManager.getGraphLayer(layer.getName());\r
- if (gl != null) {\r
- changeTag(e, gl.getVisible(), visible);\r
- }\r
- }\r
-\r
- @Override\r
- public void focusabilityChanged(IElement e, ILayer layer, boolean focusable) {\r
- if (!isAlive())\r
- return;\r
- if (DebugPolicy.DEBUG_LAYERS)\r
- System.out.println("focusability changed: " + e + ", " + layer + ", " + focusable);\r
- GraphLayer gl = layerManager.getGraphLayer(layer.getName());\r
- if (gl != null) {\r
- changeTag(e, gl.getFocusable(), focusable);\r
- }\r
- }\r
-\r
- void changeTag(IElement e, Resource tag, boolean set) {\r
- Object object = e.getHint(ElementHints.KEY_OBJECT);\r
- Resource tagged = null;\r
- if (object instanceof Resource) {\r
- tagged = (Resource) object;\r
- } else if (object instanceof EdgeResource) {\r
- ConnectionEntity ce = e.getHint(ElementHints.KEY_CONNECTION_ENTITY);\r
- if (ce instanceof ConnectionEntityImpl) {\r
- tagged = ((ConnectionEntityImpl) ce).connection;\r
- }\r
- }\r
- if (tagged == null)\r
- return;\r
-\r
- modificationQueue.async(new TagChange(tagged, tag, set), null);\r
- }\r
- };\r
-\r
- ElementLayerListenerImpl elementLayerListener = new ElementLayerListenerImpl();\r
-\r
- // ------------------------------------------------------------------------\r
- // LAYERS END\r
- // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r
-\r
- @Override\r
- public IDiagram loadDiagram(IProgressMonitor progressMonitor, ReadGraph g, final String modelURI, final Resource diagram, final Resource runtime, final ResourceArray structuralPath,\r
- IHintObservable initialHints) throws DatabaseException {\r
- if (DebugPolicy.DEBUG_LOAD)\r
- System.out.println(Thread.currentThread() + " loadDiagram: " + NameUtils.getSafeName(g, diagram));\r
-\r
- SubMonitor monitor = SubMonitor.convert(progressMonitor, "Load Diagram", 100);\r
-\r
- Object loadTask = Timing.BEGIN("GDS.loadDiagram");\r
- try {\r
- try {\r
- activateState(State.LOADING, false);\r
- } catch (IllegalStateException e) {\r
- // Disposed already before loading even began.\r
- this.diagram = Diagram.spawnNew(DiagramClass.DEFAULT);\r
- return this.diagram;\r
- }\r
- try {\r
- // Query for diagram class\r
- Resource diagramClassResource = g.getPossibleType(diagram, br.DIA.Composite);\r
- if (diagramClassResource != null) {\r
- // Spawn new diagram\r
- Object task = Timing.BEGIN("GDS.DiagramClassRequest");\r
- final DiagramClass diagramClass = g.syncRequest(new DiagramClassRequest(diagram));\r
- Timing.END(task);\r
- final IDiagram d = Diagram.spawnNew(diagramClass);\r
- {\r
- d.setHint(DiagramModelHints.KEY_DIAGRAM_RESOURCE, diagram);\r
- if (runtime != null)\r
- d.setHint(DiagramModelHints.KEY_DIAGRAM_RUNTIME_RESOURCE, runtime);\r
- if (modelURI != null)\r
- d.setHint(DiagramModelHints.KEY_DIAGRAM_MODEL_URI, modelURI);\r
- d.setHint(DiagramModelHints.KEY_DIAGRAM_RESOURCE_ARRAY, structuralPath);\r
-\r
- // Set dumb default routing when DiagramClass does not\r
- // predefine the default connection routing for the diagram.\r
- if (!d.containsHint(DiagramHints.ROUTE_ALGORITHM))\r
- d.setHint(DiagramHints.ROUTE_ALGORITHM, RouterFactory.create(true, false));\r
-\r
- d.setHint(SynchronizationHints.CONTEXT, this);\r
-\r
- // Initialize hints with hints from initialHints if given\r
- if (initialHints != null) {\r
- d.setHints(initialHints.getHints());\r
- }\r
- }\r
-\r
- // ITask task2 = ThreadLogger.getInstance().begin("loadLayers");\r
- monitor.subTask("Layers");\r
- {\r
- this.layerManager = new GraphLayerManager(g, modificationQueue, diagram);\r
- synchronizationContext.set(GraphSynchronizationHints.GRAPH_LAYER_MANAGER, this.layerManager);\r
- ILayersEditor layers = layerManager.loadLayers(d, g, diagram);\r
- // task2.finish();\r
-\r
- d.setHint(DiagramHints.KEY_LAYERS, layers);\r
- d.setHint(DiagramHints.KEY_LAYERS_EDITOR, layers);\r
-\r
- d.addCompositionVetoListener(diagramListener);\r
- d.addCompositionListener(diagramListener);\r
-\r
- this.diagram = d;\r
-\r
- d.setHint(DiagramHints.KEY_MUTATOR, new DefaultDiagramMutator(d, diagram, synchronizationContext));\r
-\r
- // Add default layer if no layers exist.\r
- // NOTE: this must be done after this.diagram has been set\r
- // as it will trigger a graph modification which needs the\r
- // diagram resource.\r
- // ITask task3 = ThreadLogger.getInstance().begin("addDefaultLayer");\r
-// if (layers.getLayers().isEmpty()) {\r
-// if (DebugPolicy.DEBUG_LAYERS)\r
-// System.out.println("No layers, creating default layer '"\r
-// + DiagramConstants.DEFAULT_LAYER_NAME + "'");\r
-// SimpleLayer defaultLayer = new SimpleLayer(DiagramConstants.DEFAULT_LAYER_NAME);\r
-// layers.addLayer(defaultLayer);\r
-// layers.activate(defaultLayer);\r
-// }\r
-// // task3.finish();\r
- }\r
- monitor.worked(10);\r
-\r
- monitor.subTask("Contents");\r
- // Discover the plain resources that form the content of the\r
- // diagram through a separate query. This allows us to\r
- // separately\r
- // track changes to the diagram structure itself, not the\r
- // substructures contained by the structure elements.\r
- ITask task4 = ThreadLogger.getInstance().begin("DiagramContentRequest1");\r
- DiagramContentRequest query = new DiagramContentRequest(canvas, diagram, errorHandler);\r
- g.syncRequest(query, new DiagramContentListener(diagram));\r
- task4.finish();\r
- // ITask task5 = ThreadLogger.getInstance().begin("DiagramContentRequest2");\r
- ITask task42 = ThreadLogger.getInstance().begin("DiagramContentRequest2");\r
- DiagramContents contents = g.syncRequest(query);\r
- task42.finish();\r
- // task5.finish();\r
- monitor.worked(10);\r
-\r
- monitor.subTask("Graphical elements");\r
- {\r
- Object applyDiagramContents = Timing.BEGIN("GDS.applyDiagramContents");\r
- ITask task6 = ThreadLogger.getInstance().begin("applyDiagramContents");\r
- processGraphUpdates(g, Collections.singleton(diagramGraphUpdater(contents)));\r
- task6.finish();\r
- Timing.END(applyDiagramContents);\r
- }\r
- monitor.worked(80);\r
-\r
- DataNodeMap dn = new DataNodeMap() {\r
- @Override\r
- public INode getNode(Object data) {\r
- if (DataNodeConstants.CANVAS_ROOT == data)\r
- return canvas.getCanvasNode();\r
- if (DataNodeConstants.DIAGRAM_ELEMENT_PARENT == data) {\r
- ElementPainter ep = canvas.getAtMostOneItemOfClass(ElementPainter.class);\r
- return ep != null ? ep.getDiagramElementParentNode() : null;\r
- }\r
-\r
- DataElementMap emap = GraphToDiagramSynchronizer.this.diagram.getDiagramClass().getSingleItem(DataElementMap.class);\r
- IElement element = emap.getElement(GraphToDiagramSynchronizer.this.diagram, data);\r
- if(element == null) return null;\r
- return element.getHint(ElementHints.KEY_SG_NODE);\r
- }\r
- };\r
-\r
- profileObserver = new ProfileObserver(g.getSession(), runtime,\r
- canvas.getThreadAccess(), canvas, canvas.getSceneGraph(), diagram, \r
- ArrayMap.keys(ProfileKeys.DIAGRAM, ProfileKeys.CANVAS, ProfileKeys.NODE_MAP).values(GraphToDiagramSynchronizer.this.diagram, canvas, dn),\r
- new CanvasNotification(canvas));\r
-\r
- profileObserver.listen(g, GraphToDiagramSynchronizer.this);\r
-\r
- return d;\r
-\r
- }\r
-\r
- this.diagram = Diagram.spawnNew(DiagramClass.DEFAULT);\r
- return this.diagram;\r
-\r
- } finally {\r
- idle();\r
- }\r
- } catch (InterruptedException e) {\r
- throw new RuntimeException(e);\r
- } catch (IllegalStateException e) {\r
- // If the synchronizer was disposed ahead of time, it was done\r
- // for a reason, such as the user having closed the owner editor.\r
- if (!isAlive())\r
- throw new CancelTransactionException(e);\r
- throw new RuntimeException(e);\r
- } finally {\r
- Timing.END(loadTask);\r
- }\r
- }\r
-\r
- static class CanvasNotification implements Runnable {\r
-\r
- final private ICanvasContext canvas;\r
-\r
- public CanvasNotification(ICanvasContext canvas) {\r
- this.canvas = canvas;\r
- }\r
-\r
- public void run() {\r
- canvas.getContentContext().setDirty();\r
- }\r
-\r
- }\r
-\r
- ArrayList<IModification> pendingModifications = new ArrayList<IModification>();\r
- MapSet<IElement, IModification> modificationIndex = new MapSet.Hash<IElement, IModification>();\r
-\r
- void addModification(IElement element, IModification modification) {\r
- pendingModifications.add(modification);\r
- if (element != null)\r
- modificationIndex.add(element, modification);\r
-\r
- }\r
- class DefaultDiagramMutator implements DiagramMutator {\r
-\r
- Map<IElement, Resource> creation = new HashMap<IElement, Resource>();\r
-\r
- IDiagram d;\r
- Resource diagram;\r
-\r
- IModifiableSynchronizationContext synchronizationContext;\r
-\r
- public DefaultDiagramMutator(IDiagram d, Resource diagram, IModifiableSynchronizationContext synchronizationContext) {\r
- this.d = d;\r
- this.diagram = diagram;\r
- this.synchronizationContext = synchronizationContext;\r
-\r
- if (synchronizationContext.get(SynchronizationHints.ELEMENT_CLASS_PROVIDER) == null)\r
- throw new IllegalArgumentException("SynchronizationHints.ELEMENT_CLASS_PROVIDER not available");\r
- }\r
-\r
- void assertNotDisposed() {\r
- if (!isAlive())\r
- throw new IllegalStateException(getClass().getSimpleName() + " is disposed");\r
- }\r
-\r
- @Override\r
- public IElement newElement(ElementClass clazz) {\r
- assertNotDisposed();\r
- ElementFactory ef = d.getDiagramClass().getAtMostOneItemOfClass(ElementFactory.class);\r
- IElement element = null;\r
- if (ef != null)\r
- element = ef.spawnNew(clazz);\r
- else\r
- element = Element.spawnNew(clazz);\r
-\r
- element.setHint(ElementHints.KEY_OBJECT, new TransientElementObject());\r
-\r
- addModification(element, new AddElement(synchronizationContext, d, element));\r
-\r
- return element;\r
- }\r
-\r
- @Override\r
- public void commit() {\r
- assertNotDisposed();\r
- if (DebugPolicy.DEBUG_MUTATOR_COMMIT) {\r
- System.out.println("DiagramMutator is about to commit changes:");\r
- for (IModification mod : pendingModifications)\r
- System.out.println("\t- " + mod);\r
- }\r
-\r
- Collections.sort(pendingModifications);\r
-\r
- if (DebugPolicy.DEBUG_MUTATOR_COMMIT) {\r
- if (pendingModifications.size() > 1) {\r
- System.out.println("* changes were re-ordered to:");\r
- for (IModification mod : pendingModifications)\r
- System.out.println("\t" + mod);\r
- }\r
- }\r
-\r
- Timing.safeTimed(errorHandler, "QUEUE AND WAIT FOR MODIFICATIONS TO FINISH", new GTask() {\r
- @Override\r
- public void run() throws DatabaseException {\r
- // Performs a separate write request and query result update\r
- // for each modification\r
-// for (IModification mod : pendingModifications) {\r
-// try {\r
-// modificationQueue.sync(mod);\r
-// } catch (InterruptedException e) {\r
-// error("Pending diagram modification " + mod\r
-// + " was interrupted. See exception for details.", e);\r
-// }\r
-// }\r
-\r
- // NOTE: this is still under testing, the author is not\r
- // truly certain that it should work in all cases ATM.\r
-\r
- // Performs all modifications with in a single write request\r
- for (IModification mod : pendingModifications) {\r
- modificationQueue.offer(mod, null);\r
- }\r
- try {\r
- // Perform the modifications in a single request.\r
- modificationQueue.finish();\r
- } catch (InterruptedException e) {\r
- errorHandler.error("Diagram modification finishing was interrupted. See exception for details.", e);\r
- }\r
- }\r
- });\r
- pendingModifications.clear();\r
- modificationIndex.clear();\r
- creation.clear();\r
- if (DebugPolicy.DEBUG_MUTATOR_COMMIT)\r
- System.out.println("DiagramMutator has committed");\r
- }\r
-\r
- @Override\r
- public void clear() {\r
- assertNotDisposed();\r
- pendingModifications.clear();\r
- modificationIndex.clear();\r
- creation.clear();\r
- if (DebugPolicy.DEBUG_MUTATOR)\r
- System.out.println("DiagramMutator has been cleared");\r
- }\r
-\r
- @Override\r
- public void modifyTransform(IElement element) {\r
- assertNotDisposed();\r
- Resource resource = backendObject(element);\r
- AffineTransform tr = element.getHint(ElementHints.KEY_TRANSFORM);\r
- if (resource != null && tr != null) {\r
- addModification(element, new TransformElement(resource, tr));\r
- }\r
- }\r
-\r
- @Override\r
- public void synchronizeHintsToBackend(IElement element) {\r
- assertNotDisposed();\r
- IHintSynchronizer synchronizer = element.getHint(SynchronizationHints.HINT_SYNCHRONIZER);\r
- if (synchronizer != null) {\r
- CollectingModificationQueue queue = new CollectingModificationQueue();\r
- synchronizer.synchronize(synchronizationContext, element);\r
- addModification(element, new CompositeModification(ModificationAdapter.LOW_PRIORITY, queue.getQueue()));\r
- }\r
- }\r
-\r
- @Override\r
- public void synchronizeElementOrder() {\r
- assertNotDisposed();\r
- List<IElement> snapshot = d.getSnapshot();\r
- addModification(null, new ElementReorder(d, snapshot));\r
- }\r
-\r
- @Override\r
- public void register(IElement element, Object object) {\r
- creation.put(element, (Resource) object);\r
- }\r
-\r
- @SuppressWarnings("unchecked")\r
- @Override\r
- public <T> T backendObject(IElement element) {\r
- Object object = ElementUtils.getObject(element);\r
- if (object instanceof Resource)\r
- return (T) object;\r
- else\r
- return (T) creation.get(element);\r
- }\r
-\r
- }\r
-\r
- // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\r
- // GRAPH TO DIAGRAM SYCHRONIZATION LOGIC BEGIN\r
- // ------------------------------------------------------------------------\r
-\r
- static class ConnectionData {\r
- ConnectionEntityImpl impl;\r
- List<Resource> branchPoints = new ArrayList<Resource>();\r
- List<EdgeResource> segments = new ArrayList<EdgeResource>();\r
-\r
- ConnectionData(ConnectionEntityImpl ce) {\r
- this.impl = ce;\r
- }\r
-\r
- void addBranchPoint(Resource bp) {\r
- branchPoints.add(bp);\r
- }\r
-\r
- void addSegment(EdgeResource seg) {\r
- segments.add(seg);\r
- }\r
- }\r
-\r
- class GraphToDiagramUpdater {\r
- DiagramContents lastContent;\r
- DiagramContents content;\r
- DiagramContentChanges changes;\r
-\r
- final List<IElement> addedElements;\r
- final List<IElement> removedElements;\r
-\r
- final List<IElement> addedConnectionSegments;\r
- final List<IElement> removedConnectionSegments;\r
-\r
- final List<IElement> addedBranchPoints;\r
- final List<IElement> removedBranchPoints;\r
-\r
- final Map<Object, IElement> addedElementMap;\r
- final Map<Resource, IElement> addedConnectionMap;\r
- final Map<Resource, ConnectionEntityImpl> addedConnectionEntities;\r
- final List<Resource> removedConnectionEntities;\r
- final Map<ConnectionEntityImpl, ConnectionData> changedConnectionEntities;\r
-\r
- final Map<Resource, IElement> addedRouteGraphConnectionMap;\r
- final List<IElement> removedRouteGraphConnections;\r
-\r
-\r
- GraphToDiagramUpdater(DiagramContents lastContent, DiagramContents content, DiagramContentChanges changes) {\r
- this.lastContent = lastContent;\r
- this.content = content;\r
- this.changes = changes;\r
-\r
- this.addedElements = new ArrayList<IElement>(changes.elements.size() + changes.branchPoints.size());\r
- this.removedElements = new ArrayList<IElement>(changes.elements.size() + changes.branchPoints.size());\r
- this.addedConnectionSegments = new ArrayList<IElement>(content.connectionSegments.size());\r
- this.removedConnectionSegments = new ArrayList<IElement>(content.connectionSegments.size());\r
- this.addedBranchPoints = new ArrayList<IElement>(content.branchPoints.size());\r
- this.removedBranchPoints = new ArrayList<IElement>(content.branchPoints.size());\r
- this.addedElementMap = new HashMap<Object, IElement>();\r
- this.addedConnectionMap = new HashMap<Resource, IElement>();\r
- this.addedConnectionEntities = new HashMap<Resource, ConnectionEntityImpl>();\r
- this.removedConnectionEntities = new ArrayList<Resource>(changes.connections.size());\r
- this.changedConnectionEntities = new HashMap<ConnectionEntityImpl, ConnectionData>();\r
- this.addedRouteGraphConnectionMap = new HashMap<Resource, IElement>();\r
- this.removedRouteGraphConnections = new ArrayList<IElement>(changes.routeGraphConnections.size());\r
- }\r
-\r
- public void clear() {\r
- // Prevent DiagramContents leakage through DisposableListeners.\r
- lastContent = null;\r
- content = null;\r
- changes = null;\r
- \r
- this.addedElements.clear();\r
- this.removedElements.clear();\r
- this.addedConnectionSegments.clear();\r
- this.removedConnectionSegments.clear();\r
- this.addedBranchPoints.clear();\r
- this.removedBranchPoints.clear();\r
- this.addedElementMap.clear();\r
- this.addedConnectionMap.clear();\r
- this.addedConnectionEntities.clear();\r
- this.removedConnectionEntities.clear();\r
- this.changedConnectionEntities.clear();\r
- this.addedRouteGraphConnectionMap.clear();\r
- this.removedRouteGraphConnections.clear();\r
- }\r
-\r
- void processNodes(AsyncReadGraph graph) {\r
-\r
- for (Map.Entry<Resource, Change> entry : changes.elements.entrySet()) {\r
-\r
- final Resource element = entry.getKey();\r
- Change change = entry.getValue();\r
-\r
- switch (change) {\r
- case ADDED: {\r
- IElement mappedElement = getMappedElement(element);\r
- if (mappedElement == null) {\r
- if (DebugPolicy.DEBUG_NODE_LOAD)\r
- graph.asyncRequest(new ReadRequest() {\r
- @Override\r
- public void run(ReadGraph graph) throws DatabaseException {\r
- System.out.println(" EXTERNALLY ADDED ELEMENT: "\r
- + NameUtils.getSafeName(graph, element) + " ("\r
- + element.getResourceId() + ")");\r
- }\r
- });\r
-\r
- if (content.connectionSet.contains(element)) {\r
-\r
- // TODO: Connection loading has no listening, changes :Connection will not be noticed by this code!\r
- Listener<IElement> loadListener = new DisposableListener<IElement>(canvasListenerSupport) {\r
- @Override\r
- public String toString() {\r
- return "Connection load listener for " + element;\r
- }\r
- @Override\r
- public void execute(IElement loaded) {\r
- // Invoked when the element has been loaded.\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER)\r
- System.out.println("CONNECTION LoadListener for " + loaded);\r
-\r
- if (loaded == null) {\r
- disposeListener();\r
- return;\r
- }\r
-\r
- Object data = loaded.getHint(ElementHints.KEY_OBJECT);\r
-\r
- // Logic for disposing listener\r
- if (!previousContent.connectionSet.contains(data)) {\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER)\r
- System.out.println("CONNECTION LoadListener, connection not in current content: " + data + ". Disposing.");\r
- disposeListener();\r
- return;\r
- }\r
-\r
- if (addedElementMap.containsKey(data)) {\r
- // This element was just loaded, in\r
- // which case its hints need to\r
- // uploaded to the real mapped\r
- // element immediately.\r
- IElement mappedElement = getMappedElement(data);\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER)\r
- System.out.println("LOADED ADDED CONNECTION, currently mapped connection: " + mappedElement);\r
- if (mappedElement != null && (mappedElement instanceof Element)) {\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER) {\r
- System.out.println(" mapped hints: " + mappedElement.getHints());\r
- System.out.println(" loaded hints: " + loaded.getHints());\r
- }\r
- updateMappedElement((Element) mappedElement, loaded);\r
- }\r
- } else {\r
- // This element was already loaded.\r
- // Just schedule an update some time\r
- // in the future.\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER)\r
- System.out.println("PREVIOUSLY LOADED CONNECTION UPDATED, scheduling update into the future");\r
- offerGraphUpdate( connectionUpdater(element, loaded) );\r
- }\r
- }\r
- };\r
-\r
- graph.asyncRequest(new ConnectionRequest(canvas, diagram, element, errorHandler, loadListener), new AsyncProcedure<IElement>() {\r
- @Override\r
- public void execute(AsyncReadGraph graph, final IElement e) {\r
- if (e == null)\r
- return;\r
-\r
- //System.out.println("ConnectionRequestProcedure " + e);\r
- mapElement(element, e);\r
- synchronized (GraphToDiagramUpdater.this) {\r
- addedElements.add(e);\r
- addedElementMap.put(element, e);\r
- addedConnectionMap.put(element, e);\r
- }\r
-\r
- // Read connection type\r
- graph.forSingleType(element, br.DIA.Connection, new Procedure<Resource>() {\r
- @Override\r
- public void exception(Throwable t) {\r
- error(t);\r
- }\r
-\r
- @Override\r
- public void execute(Resource connectionType) {\r
- synchronized (GraphToDiagramUpdater.this) {\r
- //System.out.println("new connection entity " + e);\r
- ConnectionEntityImpl entity = new ConnectionEntityImpl(element, connectionType, e);\r
- e.setHint(ElementHints.KEY_CONNECTION_ENTITY, entity);\r
- addedConnectionEntities.put(element, entity);\r
- }\r
- }\r
- });\r
- }\r
-\r
- @Override\r
- public void exception(AsyncReadGraph graph, Throwable throwable) {\r
- error(throwable);\r
- }\r
- });\r
- } else if (content.nodeSet.contains(element)) {\r
-\r
- Listener<IElement> loadListener = new DisposableListener<IElement>(canvasListenerSupport) {\r
- @Override\r
- public String toString() {\r
- return "Node load listener for " + element;\r
- }\r
- @Override\r
- public void execute(IElement loaded) {\r
- // Invoked when the element has been loaded.\r
- if (DebugPolicy.DEBUG_NODE_LISTENER)\r
- System.out.println("NODE LoadListener for " + loaded);\r
-\r
- if (loaded == null) {\r
- disposeListener();\r
- return;\r
- }\r
-\r
- Object data = loaded.getHint(ElementHints.KEY_OBJECT);\r
-\r
- // Logic for disposing listener\r
- if (!previousContent.nodeSet.contains(data)) {\r
- if (DebugPolicy.DEBUG_NODE_LISTENER)\r
- System.out.println("NODE LoadListener, node not in current content: " + data + ". Disposing.");\r
- disposeListener();\r
- return;\r
- }\r
-\r
- if (addedElementMap.containsKey(data)) {\r
- // This element was just loaded, in\r
- // which case its hints need to\r
- // uploaded to the real mapped\r
- // element immediately.\r
- IElement mappedElement = getMappedElement(data);\r
- if (DebugPolicy.DEBUG_NODE_LISTENER)\r
- System.out.println("LOADED ADDED ELEMENT, currently mapped element: " + mappedElement);\r
- if (mappedElement != null && (mappedElement instanceof Element)) {\r
- if (DebugPolicy.DEBUG_NODE_LISTENER) {\r
- System.out.println(" mapped hints: " + mappedElement.getHints());\r
- System.out.println(" loaded hints: " + loaded.getHints());\r
- }\r
- updateMappedElement((Element) mappedElement, loaded);\r
- }\r
- } else {\r
- // This element was already loaded.\r
- // Just schedule an update some time\r
- // in the future.\r
- if (DebugPolicy.DEBUG_NODE_LISTENER)\r
- System.out.println("PREVIOUSLY LOADED NODE UPDATED, scheduling update into the future");\r
- offerGraphUpdate( nodeUpdater(element, loaded) );\r
- }\r
- }\r
- };\r
-\r
- //System.out.println("NODE REQUEST: " + element);\r
- graph.asyncRequest(new NodeRequest(canvas, diagram, element, loadListener), new AsyncProcedure<IElement>() {\r
- @Override\r
- public void execute(AsyncReadGraph graph, IElement e) {\r
- if (e == null)\r
- return;\r
-\r
- // This is invoked before the element is actually loaded.\r
- //System.out.println("NodeRequestProcedure " + e);\r
- if (DebugPolicy.DEBUG_NODE_LOAD)\r
- System.out.println("MAPPING ADDED NODE: " + element + " -> " + e);\r
- mapElement(element, e);\r
- synchronized (GraphToDiagramUpdater.this) {\r
- addedElements.add(e);\r
- addedElementMap.put(element, e);\r
- }\r
- }\r
-\r
- @Override\r
- public void exception(AsyncReadGraph graph, Throwable throwable) {\r
- error(throwable);\r
- }\r
- });\r
-\r
- } else {\r
-// warning("Diagram elements must be either elements or connections, "\r
-// + NameUtils.getSafeName(g, element) + " is neither",\r
-// new AssumptionException(""));\r
- }\r
- }\r
- break;\r
- }\r
- case REMOVED: {\r
- IElement e = getMappedElement(element);\r
- if (DebugPolicy.DEBUG_NODE_LOAD)\r
- graph.asyncRequest(new ReadRequest() {\r
- @Override\r
- public void run(ReadGraph graph) throws DatabaseException {\r
- System.out.println(" EXTERNALLY REMOVED ELEMENT: "\r
- + NameUtils.getSafeName(graph, element) + " ("\r
- + element.getResourceId() + ")");\r
- }\r
- });\r
- if (e != null) {\r
- removedElements.add(e);\r
- }\r
- break;\r
- }\r
- }\r
- }\r
- }\r
-\r
- void gatherChangedConnectionParts(Map<?, Change> changes) {\r
- for (Map.Entry<?, Change> entry : changes.entrySet()) {\r
- Object part = entry.getKey();\r
- Change change = entry.getValue();\r
-\r
- switch (change) {\r
- case ADDED: {\r
- synchronized (GraphToDiagramUpdater.this) {\r
- Resource connection = content.partToConnection.get(part);\r
- assert connection != null;\r
-\r
- IElement ce = getMappedElement(connection);\r
- if (ce == null)\r
- ce = addedElementMap.get(connection);\r
-\r
- if (ce != null)\r
- markConnectionChanged(ce);\r
- break;\r
- }\r
- }\r
- case REMOVED: {\r
- if (lastContent == null)\r
- break;\r
- Resource connection = lastContent.partToConnection.get(part);\r
- if (connection != null && content.connectionSet.contains(connection)) {\r
- markConnectionChanged(connection);\r
- }\r
- break;\r
- }\r
- }\r
- }\r
- }\r
-\r
- void markConnectionChanged(Resource connection) {\r
-// System.out.println("markConnectionChanged");\r
- ConnectionEntityImpl ce = getMappedConnection(connection);\r
- if (ce != null) {\r
- markConnectionChanged(ce);\r
- return;\r
- }\r
- error("WARNING: marking connection entity " + connection\r
- + " changed, but the connection was not previously mapped",\r
- new Exception("created exception to get a stack trace"));\r
- }\r
-\r
- void markConnectionChanged(IElement connection) {\r
- ConnectionEntityImpl entity = connection.getHint(ElementHints.KEY_CONNECTION_ENTITY);\r
- if (entity != null)\r
- markConnectionChanged(entity);\r
- }\r
-\r
- void markConnectionChanged(ConnectionEntityImpl ce) {\r
- if (!changedConnectionEntities.containsKey(ce)) {\r
- changedConnectionEntities.put(ce, new ConnectionData(ce));\r
- }\r
- }\r
-\r
- void processConnections() {\r
- // Find added/removed connection segments/branch points\r
- // in order to find all changed connection entities.\r
- gatherChangedConnectionParts(changes.connectionSegments);\r
- gatherChangedConnectionParts(changes.branchPoints);\r
-\r
- // Find removed connection entities\r
- for (Map.Entry<Resource, Change> entry : changes.connections.entrySet()) {\r
- Resource ce = entry.getKey();\r
- Change change = entry.getValue();\r
-\r
- switch (change) {\r
- case REMOVED: {\r
- removedConnectionEntities.add(ce);\r
- }\r
- }\r
- }\r
-\r
- // Generate update data of changed connection entities.\r
- // This ConnectionData will be applied in the canvas thread\r
- // diagram updater.\r
- for (ConnectionData cd : changedConnectionEntities.values()) {\r
- for (Object part : content.connectionToParts.getValuesUnsafe(cd.impl.connection)) {\r
- if (part instanceof Resource) {\r
- cd.branchPoints.add((Resource) part);\r
- } else if (part instanceof EdgeResource) {\r
- cd.segments.add((EdgeResource) part);\r
- }\r
- }\r
- }\r
- }\r
-\r
- void processRouteGraphConnections(AsyncReadGraph graph) {\r
- for (Map.Entry<Resource, Change> entry : changes.routeGraphConnections.entrySet()) {\r
- final Resource connection = entry.getKey();\r
-\r
- Change change = entry.getValue();\r
- switch (change) {\r
- case ADDED: {\r
- IElement mappedElement = getMappedElement(connection);\r
- if (mappedElement != null)\r
- continue;\r
-\r
- Listener<IElement> loadListener = new DisposableListener<IElement>(canvasListenerSupport) {\r
- @Override\r
- public String toString() {\r
- return "processRouteGraphConnections " + connection;\r
- }\r
- @Override\r
- public void execute(IElement loaded) {\r
- // Invoked when the element has been loaded.\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER)\r
- System.out.println("ROUTE GRAPH CONNECTION LoadListener for " + loaded);\r
-\r
- if (loaded == null) {\r
- disposeListener();\r
- return;\r
- }\r
-\r
- Object data = loaded.getHint(ElementHints.KEY_OBJECT);\r
-\r
- // Logic for disposing listener\r
- if (!previousContent.routeGraphConnectionSet.contains(data)) {\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER)\r
- System.out.println("ROUTE GRAPH CONNECTION LoadListener, connection not in current content: " + data + ". Disposing.");\r
- disposeListener();\r
- return;\r
- }\r
-\r
- if (addedElementMap.containsKey(data)) {\r
- // This element was just loaded, in\r
- // which case its hints need to\r
- // uploaded to the real mapped\r
- // element immediately.\r
- IElement mappedElement = getMappedElement(data);\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER)\r
- System.out.println("LOADED ADDED ROUTE GRAPH CONNECTION, currently mapped connection: " + mappedElement);\r
- if (mappedElement instanceof Element) {\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER) {\r
- System.out.println(" mapped hints: " + mappedElement.getHints());\r
- System.out.println(" loaded hints: " + loaded.getHints());\r
- }\r
- updateMappedElement((Element) mappedElement, loaded);\r
- }\r
- } else {\r
- // This element was already loaded.\r
- // Just schedule an update some time\r
- // in the future.\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER)\r
- System.out.println("PREVIOUSLY LOADED ROUTE GRAPH CONNECTION UPDATED, scheduling update into the future: " + connection);\r
-\r
- Set<Object> dirtyNodes = new THashSet<Object>(4);\r
- IElement mappedElement = getMappedElement(connection);\r
- ConnectionEntity ce = mappedElement.getHint(ElementHints.KEY_CONNECTION_ENTITY);\r
- if (ce != null) {\r
- for (Connection conn : ce.getTerminalConnections(null)) {\r
- Object o = conn.node.getHint(ElementHints.KEY_OBJECT);\r
- if (o != null) {\r
- dirtyNodes.add(o);\r
- if (DebugPolicy.DEBUG_CONNECTION_LISTENER)\r
- System.out.println("Marked connectivity dirty for node: " + conn.node);\r
- }\r
- }\r
- }\r
-\r
- offerGraphUpdate( routeGraphConnectionUpdater(connection, loaded, dirtyNodes) );\r
- }\r
- }\r
- };\r
-\r
- graph.asyncRequest(new ConnectionRequest(canvas, diagram, connection, errorHandler, loadListener), new Procedure<IElement>() {\r
- @Override\r
- public void execute(final IElement e) {\r
- if (e == null)\r
- return;\r
-\r
- //System.out.println("ConnectionRequestProcedure " + e);\r
- if (DebugPolicy.DEBUG_NODE_LOAD)\r
- System.out.println("MAPPING ADDED ROUTE GRAPH CONNECTION: " + connection + " -> " + e);\r
- mapElement(connection, e);\r
- synchronized (GraphToDiagramUpdater.this) {\r
- addedElements.add(e);\r
- addedElementMap.put(connection, e);\r
- addedRouteGraphConnectionMap.put(connection, e);\r
- }\r
- }\r
- @Override\r
- public void exception(Throwable throwable) {\r
- error(throwable);\r
- }\r
- });\r
- break;\r
- }\r
- case REMOVED: {\r
- IElement e = getMappedElement(connection);\r
- if (e != null)\r
- removedRouteGraphConnections.add(e);\r
- break;\r
- }\r
- }\r
- }\r
- }\r
-\r
- ConnectionEntityImpl getConnectionEntity(Object connectionPart) {\r
- Resource connection = content.partToConnection.get(connectionPart);\r
- assert connection != null;\r
- ConnectionEntityImpl ce = addedConnectionEntities.get(connection);\r
- if (ce != null)\r
- return ce;\r
- return assertMappedConnection(connection);\r
- }\r
-\r
- void processBranchPoints(AsyncReadGraph graph) {\r
- for (Map.Entry<Resource, Change> entry : changes.branchPoints.entrySet()) {\r
-\r
- final Resource element = entry.getKey();\r
- Change change = entry.getValue();\r
-\r
- switch (change) {\r
- case ADDED: {\r
- IElement mappedElement = getMappedElement(element);\r
- if (mappedElement == null) {\r
- if (DebugPolicy.DEBUG_NODE_LOAD)\r
- graph.asyncRequest(new ReadRequest() {\r
- @Override\r
- public void run(ReadGraph graph) throws DatabaseException {\r
- System.out.println(" EXTERNALLY ADDED BRANCH POINT: "\r
- + NameUtils.getSafeName(graph, element) + " ("\r
- + element.getResourceId() + ")");\r
- }\r
- });\r
-\r
- Listener<IElement> loadListener = new DisposableListener<IElement>(canvasListenerSupport) {\r
- @Override\r
- public String toString() {\r
- return "processBranchPoints for " + element;\r
- }\r
- @Override\r
- public void execute(IElement loaded) {\r
- // Invoked when the element has been loaded.\r
- if (DebugPolicy.DEBUG_NODE_LISTENER)\r
- System.out.println("BRANCH POINT LoadListener for " + loaded);\r
-\r
- if (loaded == null) {\r
- disposeListener();\r
- return;\r
- }\r
-\r
- Object data = loaded.getHint(ElementHints.KEY_OBJECT);\r
- if (addedElementMap.containsKey(data)) {\r
- // This element was just loaded, in\r
- // which case its hints need to\r
- // uploaded to the real mapped\r
- // element immediately.\r
- IElement mappedElement = getMappedElement(data);\r
- if (DebugPolicy.DEBUG_NODE_LISTENER)\r
- System.out.println("LOADED ADDED BRANCH POINT, currently mapped element: " + mappedElement);\r
- if (mappedElement != null && (mappedElement instanceof Element)) {\r
- if (DebugPolicy.DEBUG_NODE_LISTENER) {\r
- System.out.println(" mapped hints: " + mappedElement.getHints());\r
- System.out.println(" loaded hints: " + loaded.getHints());\r
- }\r
- updateMappedElement((Element) mappedElement, loaded);\r
- }\r
- } else {\r
- // This element was already loaded.\r
- // Just schedule an update some time\r
- // in the future.\r
- if (DebugPolicy.DEBUG_NODE_LISTENER)\r
- System.out.println("PREVIOUSLY LOADED BRANCH POINT UPDATED, scheduling update into the future");\r
- offerGraphUpdate( nodeUpdater(element, loaded) );\r
- }\r
- }\r
- };\r
-\r
- graph.asyncRequest(new NodeRequest(canvas, diagram, element, loadListener), new AsyncProcedure<IElement>() {\r
- @Override\r
- public void execute(AsyncReadGraph graph, IElement e) {\r
- if (e != null) {\r
- mapElement(element, e);\r
- synchronized (GraphToDiagramUpdater.this) {\r
- addedBranchPoints.add(e);\r
- addedElementMap.put(element, e);\r
- ConnectionEntityImpl ce = getConnectionEntity(element);\r
- e.setHint(ElementHints.KEY_CONNECTION_ENTITY, ce);\r
- e.setHint(ElementHints.KEY_PARENT_ELEMENT, ce.getConnectionElement());\r
- }\r
- }\r
- }\r
-\r
- @Override\r
- public void exception(AsyncReadGraph graph, Throwable throwable) {\r
- error(throwable);\r
- }\r
- });\r
- }\r
- break;\r
- }\r
- case REMOVED: {\r
- IElement e = getMappedElement(element);\r
- if (DebugPolicy.DEBUG_NODE_LOAD)\r
- graph.asyncRequest(new ReadRequest() {\r
- @Override\r
- public void run(ReadGraph graph) throws DatabaseException {\r
- System.out.println(" EXTERNALLY REMOVED BRANCH POINT: "\r
- + NameUtils.getSafeName(graph, element) + " ("\r
- + element.getResourceId() + ")");\r
- }\r
- });\r
- if (e != null) {\r
- removedBranchPoints.add(e);\r
- }\r
- break;\r
- }\r
- }\r
- }\r
- }\r
-\r
- void processConnectionSegments(AsyncReadGraph graph) {\r
- ConnectionSegmentAdapter adapter = connectionSegmentAdapter;\r
-\r
- for (Map.Entry<EdgeResource, Change> entry : changes.connectionSegments.entrySet()) {\r
- final EdgeResource seg = entry.getKey();\r
- Change change = entry.getValue();\r
-\r
- switch (change) {\r
- case ADDED: {\r
- IElement mappedElement = getMappedElement(seg);\r
- if (mappedElement == null) {\r
- if (DebugPolicy.DEBUG_EDGE_LOAD)\r
- graph.asyncRequest(new ReadRequest() {\r
- @Override\r
- public void run(ReadGraph graph) throws DatabaseException {\r
- System.out.println(" EXTERNALLY ADDED CONNECTION SEGMENT: " + seg.toString()\r
- + " - " + seg.toString(graph));\r
- }\r
- });\r
-\r
- graph.asyncRequest(new EdgeRequest(canvas, errorHandler, canvasListenerSupport, diagram, adapter, seg), new AsyncProcedure<IElement>() {\r
- @Override\r
- public void execute(AsyncReadGraph graph, IElement e) {\r
- if (DebugPolicy.DEBUG_EDGE_LOAD)\r
- System.out.println("ADDED EDGE LOADED: " + e);\r
- if (e != null) {\r
- mapElement(seg, e);\r
- synchronized (GraphToDiagramUpdater.this) {\r
- addedConnectionSegments.add(e);\r
- addedElementMap.put(seg, e);\r
- ConnectionEntityImpl ce = getConnectionEntity(seg);\r
- e.setHint(ElementHints.KEY_CONNECTION_ENTITY, ce);\r
- e.setHint(ElementHints.KEY_PARENT_ELEMENT, ce.getConnectionElement());\r
- }\r
- }\r
- }\r
-\r
- @Override\r
- public void exception(AsyncReadGraph graph, Throwable throwable) {\r
- error(throwable);\r
- }\r
- });\r
- }\r
- break;\r
- }\r
- case REMOVED: {\r
- final IElement e = getMappedElement(seg);\r
- if (DebugPolicy.DEBUG_EDGE_LOAD)\r
- graph.asyncRequest(new ReadRequest() {\r
- @Override\r
- public void run(ReadGraph graph) throws DatabaseException {\r
- System.out.println(" EXTERNALLY REMOVED CONNECTION SEGMENT: " + seg.toString() + " - "\r
- + seg.toString(graph) + " -> " + e);\r
- }\r
- });\r
- if (e != null) {\r
- removedConnectionSegments.add(e);\r
- }\r
- break;\r
- }\r
- }\r
- }\r
- }\r
-\r
- void executeDeferredLoaders(ReadGraph graph) throws DatabaseException {\r
- // The rest of the diagram loading passes\r
- Deque<IElement> q1 = new ArrayDeque<IElement>();\r
- Deque<IElement> q2 = new ArrayDeque<IElement>();\r
- collectElementLoaders(q1, addedElements);\r
- while (!q1.isEmpty()) {\r
- //System.out.println("DEFFERED LOADERS: " + q1);\r
- for (IElement e : q1) {\r
- ElementLoader loader = e.removeHint(DiagramModelHints.KEY_ELEMENT_LOADER);\r
- //System.out.println("EXECUTING DEFFERED LOADER: " + loader);\r
- loader.load(graph, diagram, e);\r
- }\r
-\r
- collectElementLoaders(q2, q1);\r
- Deque<IElement> qt = q1;\r
- q1 = q2;\r
- q2 = qt;\r
- q2.clear();\r
- }\r
- }\r
-\r
- private void collectElementLoaders(Queue<IElement> queue, Collection<IElement> cs) {\r
- for (IElement e : cs) {\r
- ElementLoader loader = e.getHint(DiagramModelHints.KEY_ELEMENT_LOADER);\r
- if (loader != null)\r
- queue.add(e);\r
- }\r
- }\r
-\r
- public void process(ReadGraph graph) throws DatabaseException {\r
- // No changes? Do nothing.\r
- if (changes.isEmpty())\r
- return;\r
-\r
- // NOTE: This order is important.\r
- Object task = Timing.BEGIN("processNodesConnections");\r
- //System.out.println("---- PROCESS NODES & CONNECTIONS BEGIN");\r
- if (!changes.elements.isEmpty()) {\r
- graph.syncRequest(new AsyncReadRequest() {\r
- @Override\r
- public void run(AsyncReadGraph graph) {\r
- processNodes(graph);\r
- }\r
- @Override\r
- public String toString() {\r
- return "processNodes";\r
- }\r
- });\r
- }\r
- //System.out.println("---- PROCESS NODES & CONNECTIONS END");\r
-\r
- processConnections();\r
-\r
- //System.out.println("---- PROCESS BRANCH POINTS BEGIN");\r
- if (!changes.branchPoints.isEmpty()) {\r
- graph.syncRequest(new AsyncReadRequest() {\r
- @Override\r
- public void run(AsyncReadGraph graph) {\r
- processBranchPoints(graph);\r
- }\r
- @Override\r
- public String toString() {\r
- return "processBranchPoints";\r
- }\r
- });\r
- }\r
- //System.out.println("---- PROCESS BRANCH POINTS END");\r
-\r
- Timing.END(task);\r
- task = Timing.BEGIN("processConnectionSegments");\r
-\r
- //System.out.println("---- PROCESS CONNECTION SEGMENTS BEGIN");\r
- if (!changes.connectionSegments.isEmpty()) {\r
- graph.syncRequest(new AsyncReadRequest() {\r
- @Override\r
- public void run(AsyncReadGraph graph) {\r
- processConnectionSegments(graph);\r
- }\r
- @Override\r
- public String toString() {\r
- return "processConnectionSegments";\r
- }\r
- });\r
- }\r
- //System.out.println("---- PROCESS CONNECTION SEGMENTS END");\r
-\r
- Timing.END(task);\r
-\r
- task = Timing.BEGIN("processRouteGraphConnections");\r
- if (!changes.routeGraphConnections.isEmpty()) {\r
- graph.syncRequest(new AsyncReadRequest() {\r
- @Override\r
- public void run(AsyncReadGraph graph) {\r
- processRouteGraphConnections(graph);\r
- }\r
- @Override\r
- public String toString() {\r
- return "processRouteGraphConnections";\r
- }\r
- });\r
- }\r
- Timing.END(task);\r
-\r
- //System.out.println("---- AFTER LOADING");\r
- //for (IElement e : addedElements)\r
- // System.out.println(" ADDED ELEMENT: " + e);\r
- //for (IElement e : addedBranchPoints)\r
- // System.out.println(" ADDED BRANCH POINTS: " + e);\r
-\r
- task = Timing.BEGIN("executeDeferredLoaders");\r
- executeDeferredLoaders(graph);\r
- Timing.END(task);\r
- }\r
-\r
- public boolean isEmpty() {\r
- return addedElements.isEmpty() && removedElements.isEmpty()\r
- && addedConnectionSegments.isEmpty() && removedConnectionSegments.isEmpty()\r
- && addedBranchPoints.isEmpty() && removedBranchPoints.isEmpty()\r
- && addedConnectionEntities.isEmpty() && removedConnectionEntities.isEmpty()\r
- && addedRouteGraphConnectionMap.isEmpty() && removedRouteGraphConnections.isEmpty()\r
- && !changes.elementOrderChanged;\r
- }\r
-\r
- class DefaultConnectionSegmentAdapter implements ConnectionSegmentAdapter {\r
-\r
- @Override\r
- public void getClass(AsyncReadGraph graph, EdgeResource edge, ConnectionInfo info, ListenerSupport listenerSupport, ICanvasContext canvas, IDiagram diagram, final AsyncProcedure<ElementClass> procedure) {\r
- if (info.connectionType != null) {\r
- NodeClassRequest request = new NodeClassRequest(canvas, diagram, info.connectionType, true);\r
- graph.asyncRequest(request, new CacheListener<ElementClass>(listenerSupport));\r
- graph.asyncRequest(request, procedure);\r
- } else {\r
- procedure.execute(graph, null);\r
- }\r
- }\r
-\r
- @Override\r
- public void load(AsyncReadGraph graph, final EdgeResource edge, final ConnectionInfo info, ListenerSupport listenerSupport, ICanvasContext canvas, final IDiagram diagram, final IElement element) {\r
- graph.asyncRequest(new Read<IElement>() {\r
- @Override\r
- public IElement perform(ReadGraph graph) throws DatabaseException {\r
- //ITask task = ThreadLogger.getInstance().begin("LoadSegment");\r
- syncLoad(graph, edge, info, diagram, element);\r
- //task.finish();\r
- return element;\r
- }\r
- @Override\r
- public String toString() {\r
- return "defaultConnectionSegmentAdapter";\r
- }\r
- }, new DisposableListener<IElement>(listenerSupport) {\r
- \r
- @Override\r
- public String toString() {\r
- return "DefaultConnectionSegmentAdapter listener for " + edge;\r
- }\r
- \r
- @Override\r
- public void execute(IElement loaded) {\r
- // Invoked when the element has been loaded.\r
- if (DebugPolicy.DEBUG_EDGE_LISTENER)\r
- System.out.println("EDGE LoadListener for " + loaded);\r
-\r
- if (loaded == null) {\r
- disposeListener();\r
- return;\r
- }\r
-\r
- Object data = loaded.getHint(ElementHints.KEY_OBJECT);\r
- if (addedElementMap.containsKey(data)) {\r
- // This element was just loaded, in\r
- // which case its hints need to\r
- // uploaded to the real mapped\r
- // element immediately.\r
- IElement mappedElement = getMappedElement(data);\r
- if (DebugPolicy.DEBUG_EDGE_LISTENER)\r
- System.out.println("LOADED ADDED EDGE, currently mapped element: " + mappedElement);\r
- if (mappedElement != null && (mappedElement instanceof Element)) {\r
- if (DebugPolicy.DEBUG_EDGE_LISTENER) {\r
- System.out.println(" mapped hints: " + mappedElement.getHints());\r
- System.out.println(" loaded hints: " + loaded.getHints());\r
- }\r
- updateMappedElement((Element) mappedElement, loaded);\r
- }\r
- } else {\r
- // This element was already loaded.\r
- // Just schedule an update some time\r
- // in the future.\r
- if (DebugPolicy.DEBUG_EDGE_LISTENER)\r
- System.out.println("PREVIOUSLY LOADED EDGE UPDATED, scheduling update into the future");\r
- offerGraphUpdate( edgeUpdater(element, loaded) );\r
- }\r
- }\r
- });\r
- }\r
-\r
- void syncLoad(ReadGraph graph, EdgeResource connectionSegment, ConnectionInfo info, IDiagram diagram, IElement element) throws DatabaseException {\r
- // Check that at least some data exists before continuing further.\r
- if (!graph.hasStatement(connectionSegment.first()) && !graph.hasStatement(connectionSegment.second())) {\r
- return;\r
- }\r
-\r
- // Validate that both ends of the segment are\r
- // part of the same connection before loading.\r
- // This will happen for connections that are\r
- // modified through splitting and joining of\r
- // connection segments.\r
- Resource c = ConnectionUtil.tryGetConnection(graph, connectionSegment);\r
- if (c == null) {\r
- // Ok, this segment is somehow invalid. Just don't load it.\r
- if (DebugPolicy.DEBUG_CONNECTION_LOAD)\r
- System.out.println("Skipping edge " + connectionSegment + ". Both segment ends are not part of the same connection.");\r
- return;\r
- }\r
-\r
- if (!info.isValid()) {\r
- // This edge must be somehow invalid, don't proceed with loading.\r
- if (DebugPolicy.DEBUG_CONNECTION_LOAD)\r
- warning("Cannot load edge " + connectionSegment + ". ConnectionInfo " + info + " is invalid.", new DebugException("execution trace"));\r
- return;\r
- }\r
-\r
- Element edge = (Element) element;\r
- edge.setHint(ElementHints.KEY_OBJECT, connectionSegment);\r
-\r
- // connectionSegment resources may currently be in a different\r
- // order than ConnectionInfo.firstEnd/secondEnd. Therefore the\r
- // segment ends must be resolved here.\r
- ConnectionSegmentEnd firstEnd = DiagramGraphUtil.resolveConnectionSegmentEnd(graph, connectionSegment.first());\r
- ConnectionSegmentEnd secondEnd = DiagramGraphUtil.resolveConnectionSegmentEnd(graph, connectionSegment.second());\r
- if (firstEnd == null || secondEnd == null) {\r
- if (DebugPolicy.DEBUG_CONNECTION_LOAD)\r
- warning("End attachments for edge " + connectionSegment + " are unresolved: (" + firstEnd + "," + secondEnd + ")", new DebugException("execution trace"));\r
- return;\r
- }\r
-\r
- if (DebugPolicy.DEBUG_CONNECTION_LOAD)\r
- System.out.println("CONNECTION INFO: " + connectionSegment + " - " + info);\r
- DesignatedTerminal firstTerminal = DiagramGraphUtil.findDesignatedTerminal(\r
- graph, diagram, connectionSegment.first(), firstEnd);\r
- DesignatedTerminal secondTerminal = DiagramGraphUtil.findDesignatedTerminal(\r
- graph, diagram, connectionSegment.second(), secondEnd);\r
-\r
- // Edges must be connected at both ends in order for edge loading to succeed.\r
- String err = validateConnectivity(graph, connectionSegment, firstTerminal, secondTerminal);\r
- if (err != null) {\r
- // Stop loading edge if the connectivity cannot be completely resolved.\r
- if (DebugPolicy.DEBUG_CONNECTION_LOAD)\r
- warning(err, null);\r
- return;\r
- }\r
-\r
- // NOTICE: Layer information is loaded from the connection entity resource\r
- // that is shared by all segments of the same connection.\r
- ElementFactoryUtil.loadLayersForElement(graph, layerManager, diagram, edge, info.connection,\r
- new AsyncProcedureAdapter<IElement>() {\r
- @Override\r
- public void exception(AsyncReadGraph graph, Throwable t) {\r
- error("failed to load layers for connection segment", t);\r
- }\r
- });\r
-\r
- edge.setHintWithoutNotification(KEY_CONNECTION_BEGIN_PLACEHOLDER, new PlaceholderConnection(\r
- EdgeEnd.Begin,\r
- firstTerminal.element.getHint(ElementHints.KEY_OBJECT),\r
- firstTerminal.terminal));\r
- edge.setHintWithoutNotification(KEY_CONNECTION_END_PLACEHOLDER, new PlaceholderConnection(\r
- EdgeEnd.End,\r
- secondTerminal.element.getHint(ElementHints.KEY_OBJECT),\r
- secondTerminal.terminal));\r
-\r
- IModelingRules modelingRules = diagram.getHint(DiagramModelHints.KEY_MODELING_RULES);\r
- if (modelingRules != null) {\r
- ConnectionVisualsLoader loader = diagram.getHint(DiagramModelHints.KEY_CONNECTION_VISUALS_LOADER);\r
- if (loader != null)\r
- loader.loadConnectionVisuals(graph, modelingRules, info.connection, diagram, edge, firstTerminal, secondTerminal);\r
- else\r
- DiagramGraphUtil.loadConnectionVisuals(graph, modelingRules, info.connection, diagram, edge, firstTerminal, secondTerminal);\r
- }\r
- }\r
-\r
- private String validateConnectivity(ReadGraph graph, EdgeResource edge,\r
- DesignatedTerminal firstTerminal,\r
- DesignatedTerminal secondTerminal)\r
- throws DatabaseException {\r
- boolean firstLoose = firstTerminal == null;\r
- boolean secondLoose = secondTerminal == null;\r
- boolean stray = firstLoose && secondLoose;\r
- if (firstTerminal == null || secondTerminal == null) {\r
- StringBuilder sb = new StringBuilder();\r
- sb.append("encountered ");\r
- sb.append(stray ? "stray" : "loose");\r
- sb.append(" connection segment, ");\r
- if (firstLoose)\r
- sb.append("first ");\r
- if (stray)\r
- sb.append("and ");\r
- if (secondLoose)\r
- sb.append("second ");\r
- sb.append("end disconnected: ");\r
- sb.append(edge.toString(graph));\r
- sb.append(" - ");\r
- sb.append(edge.toString());\r
- return sb.toString();\r
- }\r
- return null;\r
- }\r
-\r
- }\r
-\r
- ConnectionSegmentAdapter connectionSegmentAdapter = new DefaultConnectionSegmentAdapter();\r
-\r
- }\r
-\r
- private static final Double DIAGRAM_UPDATE_DIAGRAM_PRIORITY = 1d;\r
- private static final Double DIAGRAM_UPDATE_NODE_PRIORITY = 2d;\r
- private static final Double DIAGRAM_UPDATE_CONNECTION_PRIORITY = 3d;\r
- private static final Double DIAGRAM_UPDATE_EDGE_PRIORITY = 4d;\r
-\r
- interface DiagramUpdater extends Runnable {\r
- Double getPriority();\r
-\r
- Comparator<DiagramUpdater> DIAGRAM_UPDATER_COMPARATOR = new Comparator<DiagramUpdater>() {\r
- @Override\r
- public int compare(DiagramUpdater o1, DiagramUpdater o2) {\r
- return o1.getPriority().compareTo(o2.getPriority());\r
- }\r
- };\r
- }\r
-\r
- interface GraphUpdateReactor {\r
- DiagramUpdater graphUpdate(ReadGraph graph) throws DatabaseException;\r
- }\r
-\r
- static abstract class AbstractDiagramUpdater implements DiagramUpdater, GraphUpdateReactor {\r
- protected final Double priority;\r
- protected final String runnerName;\r
-\r
- public AbstractDiagramUpdater(Double priority, String runnerName) {\r
- if (priority == null)\r
- throw new NullPointerException("null priority");\r
- if (runnerName == null)\r
- throw new NullPointerException("null runner name");\r
- this.priority = priority;\r
- this.runnerName = runnerName;\r
- }\r
-\r
- @Override\r
- public Double getPriority() {\r
- return priority;\r
- }\r
-\r
- @Override\r
- public AbstractDiagramUpdater graphUpdate(ReadGraph graph) {\r
- return this;\r
- }\r
-\r
- @Override\r
- public void run() {\r
- Object task = Timing.BEGIN(runnerName);\r
- forDiagram();\r
- Timing.END(task);\r
- }\r
-\r
- protected void forDiagram() {\r
- }\r
-\r
- @Override\r
- public String toString() {\r
- return runnerName + "@" + System.identityHashCode(this) + " [" + priority + "]";\r
- }\r
- }\r
-\r
- /**\r
- * @param content the new contents of the diagram, must not be\r
- * <code>null</code>.\r
- */\r
- private GraphUpdateReactor diagramGraphUpdater(final DiagramContents content) {\r
- if (content == null)\r
- throw new NullPointerException("null diagram content");\r
-\r
- return new GraphUpdateReactor() {\r
- @Override\r
- public String toString() {\r
- return "DiagramGraphUpdater@" + System.identityHashCode(this);\r
- }\r
-\r
- @Override\r
- public DiagramUpdater graphUpdate(ReadGraph graph) throws DatabaseException {\r
- // Never do anything here if the canvas has already been disposed.\r
- if (!GraphToDiagramSynchronizer.this.isAlive())\r
- return null;\r
-\r
- // We must be prepared for the following changes in the diagram graph\r
- // model:\r
- // - the diagram has been completely removed\r
- // - elements have been added\r
- // - elements have been removed\r
- //\r
- // Element-specific changes are handled by the element query listeners:\r
- // - elements have been modified\r
- // - element position has changed\r
- // - element class (e.g. image) has changed\r
-\r
- diagramUpdateLock.lock();\r
- try {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)\r
- System.out.println("In diagramGraphUpdater:");\r
-\r
- // Find out what has changed since the last query.\r
- Object task = Timing.BEGIN("diagramContentDifference");\r
- DiagramContents lastContent = previousContent;\r
- DiagramContentChanges changes = content.differenceFrom(previousContent);\r
- previousContent = content;\r
- Timing.END(task);\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)\r
- System.out.println(" changes: " + changes);\r
-\r
- // Bail out if there are no changes to react to.\r
- if (changes.isEmpty())\r
- return null;\r
-\r
- // Load everything that needs to be loaded from the graph,\r
- // but don't update the UI model in this thread yet.\r
- task = Timing.BEGIN("updater.process");\r
- GraphToDiagramUpdater updater = new GraphToDiagramUpdater(lastContent, content, changes);\r
- GraphToDiagramSynchronizer.this.currentUpdater = updater;\r
- try {\r
- updater.process(graph);\r
- } finally {\r
- GraphToDiagramSynchronizer.this.currentUpdater = null;\r
- }\r
- Timing.END(task);\r
-\r
- if (updater.isEmpty())\r
- return null;\r
-\r
- // Return an updater that will update the UI run-time model.\r
- return diagramUpdater(updater);\r
- } finally {\r
- diagramUpdateLock.unlock();\r
- }\r
- }\r
- };\r
- }\r
-\r
- DiagramUpdater diagramUpdater(final GraphToDiagramUpdater updater) {\r
- return new AbstractDiagramUpdater(DIAGRAM_UPDATE_DIAGRAM_PRIORITY, "updateDiagram") {\r
- @Override\r
- protected void forDiagram() {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)\r
- System.out.println("running diagram updater: " + this);\r
-\r
- // DiagramUtils.testDiagram(diagram);\r
- Set<IElement> dirty = new HashSet<IElement>();\r
-\r
- Object task2 = Timing.BEGIN("Preprocess connection changes");\r
- Map<ConnectionEntity, ConnectionChildren> connectionChangeData = new HashMap<ConnectionEntity, ConnectionChildren>(updater.changedConnectionEntities.size());\r
- for (ConnectionData cd : updater.changedConnectionEntities.values()) {\r
- connectionChangeData.put(cd.impl, cd.impl.getConnectionChildren());\r
- }\r
- Timing.END(task2);\r
-\r
- task2 = Timing.BEGIN("removeRouteGraphConnections");\r
- for (IElement removedRouteGraphConnection : updater.removedRouteGraphConnections) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("removing route graph connection: " + removedRouteGraphConnection);\r
-\r
- ConnectionEntity ce = removedRouteGraphConnection.getHint(ElementHints.KEY_CONNECTION_ENTITY);\r
- if (ce == null)\r
- continue;\r
- Object connectionData = ElementUtils.getObject(removedRouteGraphConnection);\r
- tempConnections.clear();\r
- for (Connection conn : ce.getTerminalConnections(tempConnections)) {\r
- ((Element) conn.node).removeHintWithoutNotification(new TerminalKeyOf(conn.terminal, connectionData, Connection.class));\r
- // To be sure the view will be up-to-date, mark the node\r
- // connected to the removed connection dirty.\r
- dirty.add(conn.node);\r
- }\r
- }\r
- Timing.END(task2);\r
-\r
- task2 = Timing.BEGIN("removeBranchPoints");\r
- for (IElement removed : updater.removedBranchPoints) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("removing branch point: " + removed);\r
-\r
- unmapElement(removed.getHint(ElementHints.KEY_OBJECT));\r
- removeNodeTopologyHints((Element) removed);\r
-\r
- IElement connection = ElementUtils.getParent(removed);\r
- if (connection != null) {\r
- dirty.add(connection);\r
- }\r
- }\r
- Timing.END(task2);\r
-\r
- task2 = Timing.BEGIN("removeConnectionSegments");\r
- for (IElement removed : updater.removedConnectionSegments) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("removing segment: " + removed);\r
-\r
- unmapElement(removed.getHint(ElementHints.KEY_OBJECT));\r
- removeEdgeTopologyHints((Element) removed);\r
-\r
- IElement connection = ElementUtils.getParent(removed);\r
- if (connection != null) {\r
- dirty.add(connection);\r
- }\r
- }\r
- Timing.END(task2);\r
-\r
- task2 = Timing.BEGIN("removeElements");\r
- for (IElement removed : updater.removedElements) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("removing element: " + removed);\r
-\r
- removed.setHint(KEY_REMOVE_RELATIONSHIPS, Boolean.TRUE);\r
- if (diagram.containsElement(removed)) {\r
- diagram.removeElement(removed);\r
- }\r
- unmapElement(removed.getHint(ElementHints.KEY_OBJECT));\r
- removeNodeTopologyHints((Element) removed);\r
-\r
- // No use marking removed elements dirty.\r
- dirty.remove(removed);\r
- }\r
- Timing.END(task2);\r
-\r
- // TODO: get rid of this\r
- task2 = Timing.BEGIN("removeConnectionEntities");\r
- for (Resource ce : updater.removedConnectionEntities) {\r
- unmapConnection(ce);\r
- }\r
- Timing.END(task2);\r
-\r
- task2 = Timing.BEGIN("setConnectionData");\r
- for (ConnectionData cd : updater.changedConnectionEntities.values()) {\r
- cd.impl.setData(cd.segments, cd.branchPoints);\r
- }\r
- Timing.END(task2);\r
-\r
- // TODO: get rid of this\r
- task2 = Timing.BEGIN("addConnectionEntities");\r
- for (Map.Entry<Resource, ConnectionEntityImpl> entry : updater.addedConnectionEntities\r
- .entrySet()) {\r
- mapConnection(entry.getKey(), entry.getValue());\r
- }\r
- Timing.END(task2);\r
-\r
- task2 = Timing.BEGIN("addBranchPoints");\r
- for (IElement added : updater.addedBranchPoints) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("adding branch point: " + added);\r
-\r
- mapElement(ElementUtils.getObject(added), added);\r
-\r
- IElement connection = ElementUtils.getParent(added);\r
- if (connection != null) {\r
- dirty.add(connection);\r
- }\r
- }\r
- Timing.END(task2);\r
-\r
- // Add new elements at end of diagram, element order will be synchronized later.\r
- task2 = Timing.BEGIN("addElements");\r
- for(Resource r : updater.content.elements) {\r
- IElement added = updater.addedElementMap.get(r);\r
- if(added != null) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("adding element: " + added);\r
-\r
- //Object task3 = BEGIN("mapElement " + added);\r
- Object task3 = Timing.BEGIN("mapElement");\r
- mapElement(added.getHint(ElementHints.KEY_OBJECT), added);\r
- Timing.END(task3);\r
-\r
- //task3 = BEGIN("addElement " + added);\r
- task3 = Timing.BEGIN("addElement");\r
- //System.out.println("diagram.addElement: " + added + " - " + diagram);\r
- diagram.addElement(added);\r
- dirty.add(added);\r
- Timing.END(task3);\r
- }\r
- }\r
- Timing.END(task2);\r
-\r
- // We've ensured that all nodes must have been and\r
- // mapped before reaching this.\r
- task2 = Timing.BEGIN("addConnectionSegments");\r
- for (IElement added : updater.addedConnectionSegments) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("adding segment: " + added);\r
-\r
- PlaceholderConnection cb = added.removeHint(GraphToDiagramSynchronizer.KEY_CONNECTION_BEGIN_PLACEHOLDER);\r
- PlaceholderConnection ce = added.removeHint(GraphToDiagramSynchronizer.KEY_CONNECTION_END_PLACEHOLDER);\r
- if (cb == null || ce == null) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- warning("ignoring connection segment " + added + ", connectivity was not resolved (begin=" + cb + ", end=" + ce +")", null);\r
- continue;\r
- }\r
-\r
- mapElement(ElementUtils.getObject(added), added);\r
-\r
- IElement beginNode = assertMappedElement(cb.node);\r
- IElement endNode = assertMappedElement(ce.node);\r
-\r
- if (cb != null)\r
- connect(added, cb.end, beginNode, cb.terminal);\r
- if (ce != null)\r
- connect(added, ce.end, endNode, ce.terminal);\r
-\r
- IElement connection = ElementUtils.getParent(added);\r
- if (connection != null) {\r
- dirty.add(connection);\r
- }\r
- }\r
- Timing.END(task2);\r
-\r
- // We've ensured that all nodes must have been and\r
- // mapped before reaching this.\r
-\r
- task2 = Timing.BEGIN("handle dirty RouteGraph connections");\r
- for (IElement addedRouteGraphConnection : updater.addedRouteGraphConnectionMap.values()) {\r
- updateDirtyRouteGraphConnection(addedRouteGraphConnection, dirty);\r
- }\r
- Timing.END(task2);\r
-\r
- // Prevent memory leaks\r
- tempConnections.clear();\r
-\r
- // Make sure that the diagram element order matches that of the database.\r
- final TObjectIntHashMap<IElement> orderMap = new TObjectIntHashMap<IElement>(2 * updater.content.elements.size());\r
- int i = 1;\r
- for (Resource r : updater.content.elements) {\r
- IElement e = getMappedElement(r);\r
- if (e != null)\r
- orderMap.put(e, i);\r
- ++i;\r
- }\r
- diagram.sort(new Comparator<IElement>() {\r
- @Override\r
- public int compare(IElement e1, IElement e2) {\r
- int o1 = orderMap.get(e1);\r
- int o2 = orderMap.get(e2);\r
- return o1 - o2;\r
- }\r
- });\r
-\r
- // TODO: consider removing this. The whole thing should work without it and\r
- // this "fix" will only be hiding the real problems.\r
- task2 = Timing.BEGIN("fixChangedConnections");\r
- for (ConnectionData cd : updater.changedConnectionEntities.values()) {\r
- cd.impl.fix();\r
- }\r
- Timing.END(task2);\r
-\r
- task2 = Timing.BEGIN("validateAndFix");\r
- DiagramUtils.validateAndFix(diagram, dirty);\r
- Timing.END(task2);\r
-\r
- // This will fire connection entity change listeners\r
- task2 = Timing.BEGIN("Postprocess connection changes");\r
- for (ConnectionData cd : updater.changedConnectionEntities.values()) {\r
- ConnectionChildren oldChildren = connectionChangeData.get(cd.impl);\r
- if (oldChildren != null) {\r
- ConnectionChildren currentChildren = cd.impl.getConnectionChildren();\r
- cd.impl.fireListener(oldChildren, currentChildren);\r
- }\r
- }\r
- Timing.END(task2);\r
-\r
- task2 = Timing.BEGIN("setDirty");\r
- for (IElement e : dirty) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("MARKING ELEMENT DIRTY: " + e);\r
- e.setHint(Hints.KEY_DIRTY, Hints.VALUE_SG_DIRTY);\r
- }\r
- Timing.END(task2);\r
-\r
- // Signal about possible changes in the z-order of diagram elements.\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("MARKING DIAGRAM DIRTY: " + diagram);\r
- diagram.setHint(Hints.KEY_DIRTY, Hints.VALUE_Z_ORDER_CHANGED);\r
-\r
- // Mark the updater as "processed".\r
- updater.clear();\r
-\r
- // Inform listeners that the diagram has been updated.\r
- diagram.setHint(DiagramModelHints.KEY_DIAGRAM_CONTENTS_UPDATED, Boolean.TRUE);\r
- }\r
- };\r
- }\r
-\r
- /**\r
- * @param connection\r
- * @param dirtySet\r
- */\r
- private void updateDirtyRouteGraphConnection(IElement connection, Set<IElement> dirtySet) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("updating dirty route graph connection: " + connection);\r
-\r
- ConnectionEntity ce = connection.getHint(ElementHints.KEY_CONNECTION_ENTITY);\r
- if (ce == null)\r
- return;\r
-\r
- tempConnections.clear();\r
- Object connectionData = ElementUtils.getObject(connection);\r
- for (Connection conn : ce.getTerminalConnections(tempConnections)) {\r
- ((Element) conn.node).setHintWithoutNotification(\r
- new TerminalKeyOf(conn.terminal, connectionData, Connection.class),\r
- conn);\r
- if (dirtySet != null)\r
- dirtySet.add(conn.node);\r
- }\r
-\r
- // Prevent memory leaks.\r
- tempConnections.clear();\r
- }\r
-\r
- abstract class ElementUpdater extends AbstractDiagramUpdater {\r
- private final IElement newElement;\r
-\r
- public ElementUpdater(Double priority, String runnerName, IElement newElement) {\r
- super(priority, runnerName);\r
- if (newElement == null)\r
- throw new NullPointerException("null element");\r
- this.newElement = newElement;\r
- }\r
-\r
- @Override\r
- public String toString() {\r
- return super.toString() + "[" + newElement + "]";\r
- }\r
-\r
- @Override\r
- public void run() {\r
-// System.out.println("ElementUpdateRunner new=" + newElement);\r
- Object elementResource = newElement.getHint(ElementHints.KEY_OBJECT);\r
-// System.out.println("ElementUpdateRunner res=" + elementResource);\r
- final Element mappedElement = (Element) getMappedElement(elementResource);\r
-// System.out.println("ElementUpdateRunner mapped=" + mappedElement);\r
- if (mappedElement == null) {\r
- if (DebugPolicy.DEBUG_ELEMENT_LIFECYCLE) {\r
- System.out.println("SKIP DIAGRAM UPDATE " + this + " for element resource " + elementResource + ", no mapped element (newElement=" + newElement + ")");\r
- }\r
- // Indicates the element has been removed from the graph.\r
- return;\r
- }\r
-\r
- Object task = Timing.BEGIN(runnerName);\r
- forMappedElement(mappedElement);\r
- Timing.END(task);\r
- }\r
-\r
- protected abstract void forMappedElement(Element mappedElement);\r
- }\r
-\r
- ElementUpdater nodeUpdater(final Resource resource, final IElement newElement) {\r
-\r
- return new ElementUpdater(DIAGRAM_UPDATE_NODE_PRIORITY, "updateNode", newElement) {\r
-\r
- Collection<Terminal> getTerminals(IElement e) {\r
- Collection<Terminal> ts = Collections.emptyList();\r
- TerminalTopology tt = e.getElementClass().getAtMostOneItemOfClass(TerminalTopology.class);\r
- if (tt != null) {\r
- ts = new ArrayList<Terminal>();\r
- tt.getTerminals(newElement, ts);\r
- }\r
- return ts;\r
- }\r
-\r
- @Override\r
- protected void forMappedElement(final Element mappedElement) {\r
- if (DebugPolicy.DEBUG_NODE_UPDATE)\r
- System.out.println("running node updater: " + this + " - new element: " + newElement);\r
-\r
- // Newly loaded node elements NEVER contain topology-related\r
- // hints, i.e. TerminalKeyOf hints. Instead all connections are\r
- // actually set into element hints when connection edges are\r
- // loaded.\r
-\r
- Collection<Terminal> oldTerminals = getTerminals(mappedElement);\r
- Collection<Terminal> newTerminals = getTerminals(newElement);\r
- if (!oldTerminals.equals(newTerminals)) {\r
- // Okay, there are differences in the terminals. Need to fix\r
- // the TerminalKeyOf hint values to use the new terminal\r
- // instances when correspondences exist.\r
-\r
- // If there is no correspondence for an old terminal, we\r
- // are simply forced to remove the hints related to this\r
- // connection.\r
-\r
- Map<Terminal, Terminal> newTerminalMap = new HashMap<Terminal, Terminal>(newTerminals.size());\r
- for (Terminal t : newTerminals) {\r
- newTerminalMap.put(t, t);\r
- }\r
-\r
- for (Map.Entry<TerminalKeyOf, Object> entry : mappedElement.getHintsOfClass(TerminalKeyOf.class).entrySet()) {\r
- TerminalKeyOf key = entry.getKey();\r
- Connection c = (Connection) entry.getValue();\r
- if (c.node == mappedElement) {\r
- Terminal newTerminal = newTerminalMap.get(c.terminal);\r
- if (newTerminal != null) {\r
- c = new Connection(c.edge, c.end, c.node, newTerminal);\r
- ((Element) c.edge).setHintWithoutNotification(EndKeyOf.get(c.end), c);\r
- } else {\r
- mappedElement.removeHintWithoutNotification(key);\r
- }\r
- }\r
- }\r
- }\r
-\r
- updateMappedElement(mappedElement, newElement);\r
- mappedElement.setHint(Hints.KEY_DIRTY, Hints.VALUE_SG_DIRTY);\r
- }\r
- };\r
- }\r
-\r
- ElementUpdater connectionUpdater(final Object data, final IElement newElement) {\r
- return new ElementUpdater(DIAGRAM_UPDATE_CONNECTION_PRIORITY, "updateConnection", newElement) {\r
- @Override\r
- public void forMappedElement(Element mappedElement) {\r
- if (DebugPolicy.DEBUG_CONNECTION_UPDATE)\r
- System.out.println("running connection updater: " + this + " - new element: " + newElement\r
- + " with data " + data);\r
-\r
- // This is kept up-to-date by GDS, make sure not to overwrite it\r
- // from the mapped element.\r
- newElement.removeHint(ElementHints.KEY_CONNECTION_ENTITY);\r
-\r
- updateMappedElement(mappedElement, newElement);\r
- mappedElement.setHint(Hints.KEY_DIRTY, Hints.VALUE_SG_DIRTY);\r
- }\r
- };\r
- }\r
-\r
- ElementUpdater edgeUpdater(final Object data, final IElement newElement) {\r
- return new ElementUpdater(DIAGRAM_UPDATE_EDGE_PRIORITY, "updateEdge", newElement) {\r
- @Override\r
- public void forMappedElement(Element mappedElement) {\r
- if (DebugPolicy.DEBUG_EDGE_UPDATE)\r
- System.out.println("running edge updater: " + this + " - new element: " + newElement\r
- + " with data " + data);\r
-\r
- updateMappedElement(mappedElement, newElement);\r
- mappedElement.setHint(Hints.KEY_DIRTY, Hints.VALUE_SG_DIRTY);\r
- }\r
- };\r
- }\r
-\r
- ElementUpdater routeGraphConnectionUpdater(final Object data, final IElement newElement, final Set<Object> dirtyNodes) {\r
- return new ElementUpdater(DIAGRAM_UPDATE_CONNECTION_PRIORITY, "updateRouteGraphConnection", newElement) {\r
- @Override\r
- public void forMappedElement(Element mappedElement) {\r
- if (DebugPolicy.DEBUG_CONNECTION_UPDATE)\r
- System.out.println("running route graph connection updater: " + this + " - new element: " + newElement\r
- + " with data " + data);\r
-\r
- // Remove all TerminalKeyOf hints from nodes that were\r
- // previously connected to the connection (mappedElement)\r
- // before updating mappedElement with new topology information.\r
-\r
- for (Object dirtyNodeObject : dirtyNodes) {\r
- Element dirtyNode = (Element) getMappedElement(dirtyNodeObject);\r
- if (dirtyNode == null)\r
- continue;\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)\r
- System.out.println("preparing node with dirty connectivity: " + dirtyNode);\r
-\r
- for (Map.Entry<TerminalKeyOf, Object> entry : dirtyNode.getHintsOfClass(TerminalKeyOf.class).entrySet()) {\r
- Connection conn = (Connection) entry.getValue();\r
- Object connectionNode = conn.edge.getHint(ElementHints.KEY_OBJECT);\r
- if (data.equals(connectionNode)) {\r
- dirtyNode.removeHintWithoutNotification(entry.getKey());\r
- }\r
- }\r
- }\r
-\r
- // Update connection information, including topology\r
- updateMappedElement(mappedElement, newElement);\r
-\r
- // Reinstall TerminalKeyOf hints into nodes that are now connected\r
- // to mappedElement to keep diagram run-time model properly in sync\r
- // with the database.\r
- updateDirtyRouteGraphConnection(mappedElement, null);\r
-\r
- // TODO: should mark dirty nodes' scene graph dirty ?\r
-\r
- mappedElement.setHint(Hints.KEY_DIRTY, Hints.VALUE_SG_DIRTY);\r
- }\r
- };\r
- }\r
-\r
- /**\r
- * Copies hints from <code>newElement</code> to <code>mappedElement</code>\r
- * asserting some validity conditions at the same time.\r
- * \r
- * @param mappedElement\r
- * @param newElement\r
- */\r
- static void updateMappedElement(Element mappedElement, IElement newElement) {\r
- if (mappedElement == newElement)\r
- // Can't update anything if the two elements are the same.\r
- return;\r
-\r
- ElementClass oldClass = mappedElement.getElementClass();\r
- ElementClass newClass = newElement.getElementClass();\r
-\r
- Object mappedData = mappedElement.getHint(ElementHints.KEY_OBJECT);\r
- Object newData = newElement.getHint(ElementHints.KEY_OBJECT);\r
-\r
- assert mappedData != null;\r
- assert newData != null;\r
- assert mappedData.equals(newData);\r
-\r
- if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE) {\r
- System.out.println("Updating mapped element, setting hints\n from: " + newElement + "\n into: " + mappedElement);\r
- }\r
-\r
- // TODO: consider if this equals check is a waste of time or does it pay\r
- // off due to having to reinitialize per-class caches for the new\r
- // ElementClass that are constructed on the fly?\r
- if (!newClass.equals(oldClass)) {\r
- if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE) {\r
- System.out.println(" old element class: " + oldClass);\r
- System.out.println(" new element class: " + newClass);\r
- }\r
- mappedElement.setElementClass(newClass);\r
- }\r
-\r
- // Tuukka@2010-02-19: replaced with notifications for making\r
- // the graph synchronizer more transparent to the client.\r
-\r
- // Hint notifications will not work when this is used.\r
- //mappedElement.setHintsWithoutNotification(newElement.getHints());\r
-\r
- Map<DiscardableKey, Object> discardableHints = mappedElement.getHintsOfClass(DiscardableKey.class);\r
-\r
- // Set all hints from newElement to mappedElement.\r
- // Leave any hints in mappedElement but not in newElement as is.\r
- Map<Key, Object> hints = newElement.getHints();\r
- Map<Key, Object> newHints = new HashMap<Key, Object>();\r
- for (Map.Entry<Key, Object> entry : hints.entrySet()) {\r
- Key key = entry.getKey();\r
- Object newValue = entry.getValue();\r
- Object oldValue = mappedElement.getHint(key);\r
- if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE_DETAIL) {\r
- System.out.println(" hint " + key + " compare values: " + oldValue + " -> " + newValue);\r
- }\r
- if (!newValue.equals(oldValue)) {\r
- newHints.put(key, newValue);\r
- if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE) {\r
- System.out.format(" %-42s : %64s -> %-64s\n", key, oldValue, newValue);\r
- }\r
- } else {\r
- // If the hint value has not changed but the hint still exists\r
- // we don't need to discard it even if it is considered\r
- // discardable.\r
- discardableHints.remove(key);\r
- }\r
- }\r
-\r
- // Set all hints at once and send notifications after setting the values.\r
- if (!discardableHints.isEmpty()) {\r
- if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE)\r
- System.out.println("Discarding " + discardableHints.size() + " discardable hints:\n " + discardableHints);\r
- mappedElement.removeHints(discardableHints.keySet());\r
- }\r
- if (!newHints.isEmpty()) {\r
- if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE) {\r
- System.out.println("Updating mapped element, setting new hints:\n\t"\r
- + EString.implode(newHints.entrySet(), "\n\t") + "\nto replace old hints\n\t"\r
- + EString.implode(mappedElement.getHints().entrySet(), "\n\t"));\r
- }\r
- mappedElement.setHints(newHints);\r
- }\r
- if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE) {\r
- System.out.println("All hints after update:\n\t"\r
- + EString.implode(mappedElement.getHints().entrySet(), "\n\t"));\r
- }\r
- }\r
-\r
- class TransactionListener extends SessionEventListenerAdapter {\r
- long startTime;\r
- @Override\r
- public void writeTransactionStarted() {\r
- startTime = System.nanoTime();\r
- if (DebugPolicy.DEBUG_WRITE_TRANSACTIONS)\r
- System.out.println(GraphToDiagramSynchronizer.class.getSimpleName() + ".sessionEventListener.writeTransactionStarted");\r
- inWriteTransaction.set(true);\r
- }\r
- @Override\r
- public void writeTransactionFinished() {\r
- long endTime = System.nanoTime();\r
- if (DebugPolicy.DEBUG_WRITE_TRANSACTIONS)\r
- System.out.println(GraphToDiagramSynchronizer.class.getSimpleName() + ".sessionEventListener.writeTransactionFinished: " + (endTime - startTime)*1e-6 + " ms");\r
- inWriteTransaction.set(false);\r
- scheduleGraphUpdates();\r
- }\r
- };\r
-\r
- Object graphUpdateLock = new Object();\r
- TransactionListener sessionListener = null;\r
- AtomicBoolean inWriteTransaction = new AtomicBoolean(false);\r
- AtomicBoolean graphUpdateRequestScheduled = new AtomicBoolean(false);\r
- List<GraphUpdateReactor> queuedGraphUpdates = new ArrayList<GraphUpdateReactor>();\r
-\r
- private void offerGraphUpdate(GraphUpdateReactor update) {\r
- if (DebugPolicy.DEBUG_GRAPH_UPDATE)\r
- System.out.println("offerGraphUpdate: " + update);\r
- boolean inWrite = inWriteTransaction.get();\r
- synchronized (graphUpdateLock) {\r
- if (DebugPolicy.DEBUG_GRAPH_UPDATE)\r
- System.out.println("queueing graph update: " + update);\r
- queuedGraphUpdates.add(update);\r
- }\r
- if (!inWrite) {\r
- if (DebugPolicy.DEBUG_GRAPH_UPDATE)\r
- System.out.println("scheduling queued graph update immediately: " + update);\r
- scheduleGraphUpdates();\r
- }\r
- }\r
-\r
- private Collection<GraphUpdateReactor> scrubGraphUpdates() {\r
- synchronized (graphUpdateLock) {\r
- if (queuedGraphUpdates.isEmpty())\r
- return Collections.emptyList();\r
- final List<GraphUpdateReactor> updates = queuedGraphUpdates;\r
- queuedGraphUpdates = new ArrayList<GraphUpdateReactor>();\r
- return updates;\r
- }\r
- }\r
-\r
- private void scheduleGraphUpdates() {\r
- synchronized (graphUpdateLock) {\r
- if (queuedGraphUpdates.isEmpty())\r
- return;\r
- if (!graphUpdateRequestScheduled.compareAndSet(false, true))\r
- return;\r
- }\r
-\r
- if (DebugPolicy.DEBUG_GRAPH_UPDATE)\r
- System.out.println("scheduling " + queuedGraphUpdates.size() + " queued graph updates with ");\r
-\r
- session.asyncRequest(new ReadRequest() {\r
- @Override\r
- public void run(final ReadGraph graph) throws DatabaseException {\r
- Collection<GraphUpdateReactor> updates;\r
- synchronized (graphUpdateLock) {\r
- graphUpdateRequestScheduled.set(false);\r
- updates = scrubGraphUpdates();\r
- }\r
-\r
- if (!GraphToDiagramSynchronizer.this.isAlive())\r
- return;\r
-\r
- processGraphUpdates(graph, updates);\r
- }\r
- }, new ProcedureAdapter<Object>() {\r
- @Override\r
- public void exception(Throwable t) {\r
- error(t);\r
- }\r
- });\r
- }\r
-\r
- private void processGraphUpdates(ReadGraph graph, final Collection<GraphUpdateReactor> graphUpdates)\r
- throws DatabaseException {\r
- final List<DiagramUpdater> diagramUpdates = new ArrayList<DiagramUpdater>(graphUpdates.size());\r
-\r
- // Run GraphUpdaters and gather DiagramUpdaters.\r
- if (DebugPolicy.DEBUG_GRAPH_UPDATE)\r
- System.out.println("Running GRAPH updates: " + graphUpdates);\r
- for (GraphUpdateReactor graphUpdate : graphUpdates) {\r
- DiagramUpdater diagramUpdate = graphUpdate.graphUpdate(graph);\r
- if (diagramUpdate != null) {\r
- if (DebugPolicy.DEBUG_GRAPH_UPDATE)\r
- System.out.println(graphUpdate + " => " + diagramUpdate);\r
- diagramUpdates.add(diagramUpdate);\r
- }\r
- }\r
-\r
- if (diagramUpdates.isEmpty())\r
- return;\r
-\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)\r
- System.out.println("Diagram updates: " + diagramUpdates);\r
- Collections.sort(diagramUpdates, DiagramUpdater.DIAGRAM_UPDATER_COMPARATOR);\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)\r
- System.out.println("Sorted diagram updates: " + diagramUpdates);\r
-\r
- ThreadUtils.asyncExec(canvas.getThreadAccess(), new StateRunnable() {\r
- @Override\r
- public void run() {\r
- if (GraphToDiagramSynchronizer.this.isAlive() && getState() != State.DISPOSED)\r
- safeRunInState(State.UPDATING_DIAGRAM, this);\r
- }\r
-\r
- @Override\r
- public void execute() throws InvocationTargetException {\r
- // Block out diagram write transactions.\r
- DiagramUtils.inDiagramTransaction(diagram, TransactionType.READ, new Runnable() {\r
- @Override\r
- public void run() {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)\r
- System.out.println("Running DIAGRAM updates: " + diagramUpdates);\r
- for (DiagramUpdater update : diagramUpdates) {\r
- if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)\r
- System.out.println("Running DIAGRAM update: " + update);\r
- update.run();\r
- }\r
- }\r
- });\r
-\r
- setCanvasDirty();\r
- }\r
- });\r
- }\r
-\r
- private void attachSessionListener(Session session) {\r
- SessionEventSupport support = session.peekService(SessionEventSupport.class);\r
- if (support != null) {\r
- sessionListener = new TransactionListener();\r
- support.addListener(sessionListener);\r
- }\r
- }\r
-\r
- private void detachSessionListener() {\r
- if (sessionListener != null) {\r
- session.getService(SessionEventSupport.class).removeListener(sessionListener);\r
- sessionListener = null;\r
- }\r
- }\r
-\r
-\r
- // ------------------------------------------------------------------------\r
- // GRAPH TO DIAGRAM SYNCHRONIZATION LOGIC END\r
- // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r
-\r
- // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\r
- // DIAGRAM CHANGE TRACKING, MAINLY VALIDATION PURPOSES.\r
- // This does not try to synchronize anything back into the graph.\r
- // ------------------------------------------------------------------------\r
-\r
- IHintListener elementHintValidator = new HintListenerAdapter() {\r
- @Override\r
- public void hintChanged(IHintObservable sender, Key key, Object oldValue, Object newValue) {\r
- if (!(sender instanceof Element))\r
- throw new IllegalStateException("invalid sender: " + sender);\r
- Element e = (Element) sender;\r
- if (newValue != null) {\r
- if (key instanceof TerminalKeyOf) {\r
- Connection c = (Connection) newValue;\r
- if (e != c.node)\r
- throw new IllegalStateException("TerminalKeyOf hint of node " + e + " refers to a different node " + c.node + ". Should be the same.");\r
- Object edgeObject = ElementUtils.getObject(c.edge);\r
- if (!(edgeObject instanceof EdgeResource))\r
- throw new IllegalStateException("EndKeyOf hint of edge " + c.edge + " refers contains an invalid object: " + edgeObject);\r
- } else if (key instanceof EndKeyOf) {\r
- Connection c = (Connection) newValue;\r
- if (e != c.edge)\r
- throw new IllegalStateException("EndKeyOf hint of edge " + e + " refers to a different edge " + c.edge + ". Should be the same.");\r
- Object edgeObject = ElementUtils.getObject(c.edge);\r
- if (!(edgeObject instanceof EdgeResource))\r
- throw new IllegalStateException("EndKeyOf hint of edge " + e + " refers contains an invalid object: " + edgeObject);\r
- }\r
- }\r
- }\r
- };\r
-\r
- class DiagramListener implements CompositionListener, CompositionVetoListener {\r
- @Override\r
- public boolean beforeElementAdded(IDiagram d, IElement e) {\r
- // Make sure that MutatedElements NEVER get added to the diagram.\r
- if (d == diagram) {\r
- if (!(e instanceof Element)) {\r
- // THIS IS NOT GOOD!\r
- error("Attempting to add another implementation of IElement besides Element (=" + e.getElementClass().getClass().getName() + ") to the synchronized diagram which means that there is a bug somewhere! See stack trace to find out who is doing this!", new Exception("stacktrace"));\r
- System.err.println("Attempting to add another implementation of IElement besides Element (=" + e.getElementClass().getClass().getName() + ") to the synchronized diagram which means that there is a bug somewhere! See Error Log.");\r
- return false;\r
- }\r
-\r
- // Perform sanity checks that might veto the element addition.\r
- boolean pass = true;\r
-\r
- // Check that all elements added to the diagram are adaptable to Resource\r
- ElementClass ec = e.getElementClass();\r
- Resource resource = ElementUtils.adapt(ec, Resource.class);\r
- if (resource == null) {\r
- pass = false;\r
- new Exception("Attempted to add an element to the diagram that is not adaptable to Resource: " + e + ", class: " + ec).printStackTrace();\r
- }\r
-\r
- // Sanity check connection hints\r
- for (Map.Entry<TerminalKeyOf, Object> entry : e.getHintsOfClass(TerminalKeyOf.class).entrySet()) {\r
- Connection c = (Connection) entry.getValue();\r
- Object edgeObject = ElementUtils.getObject(c.edge);\r
- if (e != c.node) {\r
- System.err.println("Invalid node in TerminalKeyOf hint: " + entry.getKey() + "=" + entry.getValue());\r
- System.err.println("\tconnection.edge=" + c.edge);\r
- System.err.println("\tconnection.node=" + c.node);\r
- System.err.println("\tconnection.end=" + c.end);\r
- System.err.println("\telement=" + e);\r
- System.err.println("\telement class=" + e.getElementClass());\r
- pass = false;\r
- }\r
- if (!(edgeObject instanceof EdgeResource)) {\r
- System.err.println("Invalid object in TerminalKeyOf hint edge: " + entry.getKey() + "=" + entry.getValue());\r
- System.err.println("\tconnection.edge=" + c.edge);\r
- System.err.println("\tconnection.node=" + c.node);\r
- System.err.println("\tconnection.end=" + c.end);\r
- System.err.println("\telement=" + e);\r
- System.err.println("\telement class=" + e.getElementClass());\r
- pass = false;\r
- }\r
- }\r
-\r
- return pass;\r
- }\r
- return true;\r
- }\r
-\r
- @Override\r
- public boolean beforeElementRemoved(IDiagram d, IElement e) {\r
- // Never veto diagram changes.\r
- return true;\r
- }\r
-\r
- @Override\r
- public void onElementAdded(IDiagram d, IElement e) {\r
- if (DebugPolicy.DEBUG_ELEMENT_LIFECYCLE)\r
- System.out.println("[" + d + "] element added: " + e);\r
-\r
- if (USE_ELEMENT_VALIDATING_LISTENERS)\r
- e.addHintListener(elementHintValidator);\r
- }\r
-\r
- @Override\r
- public void onElementRemoved(IDiagram d, IElement e) {\r
- if (DebugPolicy.DEBUG_ELEMENT_LIFECYCLE)\r
- System.out.println("[" + d + "] element removed: " + e);\r
-\r
- if (USE_ELEMENT_VALIDATING_LISTENERS)\r
- e.removeHintListener(elementHintValidator);\r
-\r
- if (e.containsHint(KEY_REMOVE_RELATIONSHIPS))\r
- relationshipHandler.denyAll(diagram, e);\r
- }\r
- }\r
-\r
- DiagramListener diagramListener = new DiagramListener();\r
-\r
- static void removeNodeTopologyHints(Element node) {\r
- Set<TerminalKeyOf> terminalKeys = node.getHintsOfClass(TerminalKeyOf.class).keySet();\r
- if (!terminalKeys.isEmpty()) {\r
- removeNodeTopologyHints(node, terminalKeys);\r
- }\r
- }\r
-\r
- static void removeNodeTopologyHints(Element node, Collection<TerminalKeyOf> terminalKeys) {\r
- for (TerminalKeyOf key : terminalKeys) {\r
- Connection c = node.removeHintWithoutNotification(key);\r
- if (c != null) {\r
- removeEdgeTopologyHints((Element) c.edge);\r
- }\r
- }\r
- }\r
-\r
- static void removeEdgeTopologyHints(Element edge) {\r
- Object edgeData = edge.getHint(ElementHints.KEY_OBJECT);\r
- for (EndKeyOf key : EndKeyOf.KEYS) {\r
- Connection c = edge.removeHintWithoutNotification(key);\r
- if (c != null) {\r
- ((Element) c.node).removeHintWithoutNotification(new TerminalKeyOf(c.terminal, edgeData, Connection.class));\r
- }\r
- }\r
- }\r
-\r
- // ------------------------------------------------------------------------\r
- // DIAGRAM CHANGE TRACKING, MAINLY VALIDATION PURPOSES.\r
- // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r
-\r
- // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\r
- // BACKEND TO DIAGRAM LOAD/LISTEN LOGIC BEGIN\r
- // ------------------------------------------------------------------------\r
-\r
- void adaptDiagramClass(AsyncReadGraph graph, Resource diagram, final AsyncProcedure<DiagramClass> procedure) {\r
- graph.forAdapted(diagram, DiagramClass.class, new AsyncProcedure<DiagramClass>() {\r
- @Override\r
- public void exception(AsyncReadGraph graph, Throwable throwable) {\r
- procedure.exception(graph, throwable);\r
- }\r
-\r
- @Override\r
- public void execute(AsyncReadGraph graph, DiagramClass dc) {\r
- // To move TopologyImpl out of here, we need a separate\r
- // DiagramClassFactory that takes a canvas context as an argument.\r
- // DataElementMapImpl, ElementFactoryImpl and diagramLifeCycle can\r
- // safely stay here.\r
- procedure.execute(graph, dc.newClassWith(\r
- // This handler takes care of the topology of the diagram model.\r
- // It sets and fixes element hints related to describing the\r
- // connectivity of elements.\r
- diagramTopology,\r
- // TODO: not quite sure whether this can prove itself useful or not.\r
- elementFactory,\r
- // This map provides a bidirectional mapping between\r
- // IElement and back-end objects.\r
- dataElementMap,\r
- // This handler provides a facility to adapt an element class\r
- // to work properly with a diagram synchronized using this\r
- // GraphToDiagramSynchronizer.\r
- substituteElementClass,\r
- // These handlers provide a way to create simple identified\r
- // uni- and bidirectional relationships between any diagram\r
- // objects/elements.\r
- relationshipHandler));\r
- }\r
- });\r
- }\r
-\r
- static Connection connect(IElement edge, EdgeEnd end, IElement element, Terminal terminal) {\r
- Connection c = new Connection(edge, end, element, terminal);\r
-\r
- Object edgeData = edge.getHint(ElementHints.KEY_OBJECT);\r
- if (DebugPolicy.DEBUG_CONNECTION) {\r
- System.out.println("[connect](edge=" + edge + ", edgeData=" + edgeData + ", end=" + end + ", element="\r
- + element + ", terminal=" + terminal + ")");\r
- }\r
-\r
- TerminalKeyOf key = new TerminalKeyOf(terminal, edgeData, Connection.class);\r
- element.setHint(key, c);\r
-\r
- EndKeyOf key2 = EndKeyOf.get(end);\r
- edge.setHint(key2, c);\r
-\r
- return c;\r
- }\r
-\r
- static class ElementFactoryImpl implements ElementFactory {\r
- @Override\r
- public IElement spawnNew(ElementClass clazz) {\r
- IElement e = Element.spawnNew(clazz);\r
- return e;\r
- }\r
- }\r
-\r
- ElementFactoryImpl elementFactory = new ElementFactoryImpl();\r
-\r
- public static final Object FIRST_TIME = new Object() {\r
- @Override\r
- public String toString() {\r
- return "FIRST_TIME";\r
- }\r
- };\r
-\r
-\r
- /**\r
- * A base for all listeners of graph requests performed internally by\r
- * GraphToDiagramSynchronizer.\r
- *\r
- * @param <T> type of stored data element\r
- * @param <Result> query result type\r
- */\r
- abstract class BaseListener<T, Result> implements AsyncListener<Result> {\r
-\r
- protected final T data;\r
-\r
- private Object oldResult = FIRST_TIME;\r
-\r
- protected boolean disposed = false;\r
-\r
- final ICanvasContext canvas;\r
-\r
- public BaseListener(T data) {\r
- this.canvas = GraphToDiagramSynchronizer.this.canvas;\r
- this.data = data;\r
- }\r
-\r
- @Override\r
- public void exception(AsyncReadGraph graph, Throwable throwable) {\r
- // Exceptions are always expected to mean that the listener should\r
- // be considered disposed once a query fails.\r
- disposed = true;\r
- }\r
-\r
- abstract void execute(AsyncReadGraph graph, Object oldResult, Object newResult);\r
-\r
- @Override\r
- public void execute(AsyncReadGraph graph, Result result) {\r
- if (DebugPolicy.DEBUG_LISTENER_BASE)\r
- System.out.println("BaseListener: " + result);\r
-\r
- if (disposed) {\r
- if (DebugPolicy.DEBUG_LISTENER_BASE)\r
- System.out.println("BaseListener: execute invoked although listener is disposed!");\r
- return;\r
- }\r
-\r
- // A null result will permanently mark this listener disposed!\r
- if (result == null) {\r
- disposed = true;\r
- if (DebugPolicy.DEBUG_LISTENER_BASE)\r
- System.out.println(this + " null result, listener marked disposed");\r
- }\r
-\r
- if (oldResult == FIRST_TIME) {\r
- oldResult = result;\r
- if (DebugPolicy.DEBUG_LISTENER_BASE)\r
- System.out.println(this + " first result computed: " + result);\r
- } else {\r
- if (DebugPolicy.DEBUG_LISTENER_BASE)\r
- System.out.println(this + " result changed from '" + oldResult + "' to '" + result + "'");\r
- try {\r
- execute(graph, oldResult, result);\r
- } finally {\r
- oldResult = result;\r
- }\r
- }\r
- }\r
-\r
- @Override\r
- public boolean isDisposed() {\r
- if (disposed)\r
- return true;\r
-\r
- boolean alive = isAlive();\r
- //System.out.println(getClass().getName() + ": isDisposed(" + resource.getResourceId() + "): canvas=" + canvas + ", isAlive=" + alive);\r
- if (!alive)\r
- return true;\r
- // If a mapping no longer exists for this element, dispose of this\r
- // listener.\r
- //IElement e = getMappedElement(resource);\r
- //System.out.println(getClass().getName() + ": isDisposed(" + resource.getResourceId() + "): canvas=" + canvas + ", element=" + e);\r
- //return e == null;\r
- return false;\r
- }\r
-\r
-// @Override\r
-// protected void finalize() throws Throwable {\r
-// System.out.println("finalize listener: " + this);\r
-// super.finalize();\r
-// }\r
- }\r
-\r
- class DiagramClassRequest extends BaseRequest2<Resource, DiagramClass> {\r
- public DiagramClassRequest(Resource resource) {\r
- super(GraphToDiagramSynchronizer.this.canvas, resource);\r
- }\r
-\r
- @Override\r
- public void perform(AsyncReadGraph graph, AsyncProcedure<DiagramClass> procedure) {\r
- adaptDiagramClass(graph, data, procedure);\r
- }\r
- }\r
-\r
- public class DiagramContentListener extends BaseListener<Resource, DiagramContents> {\r
-\r
- public DiagramContentListener(Resource resource) {\r
- super(resource);\r
- }\r
-\r
- @Override\r
- public void execute(final AsyncReadGraph graph, Object oldResult, Object newResult) {\r
- final DiagramContents newContent = (newResult == null) ? new DiagramContents()\r
- : (DiagramContents) newResult;\r
-\r
- // diagramGraphUpdater is called synchronously during\r
- // loading. The first result will not get updated through\r
- // this listener but through loadDiagram.\r
-\r
- if (DebugPolicy.DISABLE_DIAGRAM_UPDATES) {\r
- System.out.println("Skipped diagram content update: " + newResult);\r
- return;\r
- }\r
-\r
- if (DebugPolicy.DEBUG_DIAGRAM_LISTENER)\r
- System.out.println("diagram contents changed: " + oldResult + " => " + newResult);\r
-\r
- offerGraphUpdate( diagramGraphUpdater(newContent) );\r
- }\r
-\r
- @Override\r
- public boolean isDisposed() {\r
- return !isAlive();\r
- }\r
-\r
- @Override\r
- public void exception(AsyncReadGraph graph, Throwable t) {\r
- super.exception(graph, t);\r
- error("DiagramContentRequest failed", t);\r
- }\r
- }\r
-\r
- // ------------------------------------------------------------------------\r
- // BACKEND TO DIAGRAM LOAD/LISTEN LOGIC END\r
- // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r
-\r
- // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\r
- // GRAPH-CUSTOMIZED DIAGRAM TOPOLOGY HANDLER BEGIN\r
- // ------------------------------------------------------------------------\r
-\r
- static class TopologyImpl implements Topology {\r
-\r
- @Override\r
- public Connection getConnection(IElement edge, EdgeEnd end) {\r
- Key key = EndKeyOf.get(end);\r
- Connection c = edge.getHint(key);\r
- if (c == null)\r
- return null;\r
- return c;\r
- }\r
-\r
- @Override\r
- public void getConnections(IElement node, Terminal terminal, Collection<Connection> connections) {\r
-// IDiagram d = ElementUtils.getDiagram(node);\r
- for (Map.Entry<TerminalKeyOf, Object> entry : node.getHintsOfClass(TerminalKeyOf.class).entrySet()) {\r
- // First check that the terminal matches.\r
- TerminalKeyOf key = entry.getKey();\r
- if (!key.getTerminal().equals(terminal))\r
- continue;\r
-\r
- Connection c = (Connection) entry.getValue();\r
- if (c != null) {\r
- connections.add(c);\r
- }\r
- }\r
- }\r
-\r
- @Override\r
- public void connect(IElement edge, EdgeEnd end, IElement node, Terminal terminal) {\r
- if (node != null && terminal != null)\r
- GraphToDiagramSynchronizer.connect(edge, end, node, terminal);\r
-\r
- if (DebugPolicy.DEBUG_CONNECTION) {\r
- if (end == EdgeEnd.Begin)\r
- System.out.println("Connection started from: " + edge + ", " + end + ", " + node + ", " + terminal);\r
- else\r
- System.out.println("Creating connection to: " + edge + ", " + end + ", " + node + ", " + terminal);\r
- }\r
- }\r
-\r
- @Override\r
- public void disconnect(IElement edge, EdgeEnd end, IElement node, Terminal terminal) {\r
- EndKeyOf edgeKey = EndKeyOf.get(end);\r
- Connection c = edge.getHint(edgeKey);\r
- if (c == null)\r
- throw new UnsupportedOperationException("cannot disconnect, no Connection in edge " + edge);\r
-\r
- for (Map.Entry<TerminalKeyOf, Object> entry : node.getHintsOfClass(TerminalKeyOf.class).entrySet()) {\r
- Connection cc = (Connection) entry.getValue();\r
- if (c == cc) {\r
- node.removeHint(entry.getKey());\r
- edge.removeHint(edgeKey);\r
- return;\r
- }\r
- }\r
-\r
- throw new UnsupportedOperationException("cannot disconnect, no connection between found between edge "\r
- + edge + " and node " + node);\r
- }\r
- }\r
-\r
- Topology diagramTopology = new TopologyImpl();\r
-\r
- // ------------------------------------------------------------------------\r
- // GRAPH-CUSTOMIZED DIAGRAM TOPOLOGY HANDLER END\r
- // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r
-\r
- // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\r
- // DIAGRAM OBJECT RELATIONSHIP HANDLER BEGIN\r
- // ------------------------------------------------------------------------\r
-\r
- RelationshipHandler relationshipHandler = new RelationshipHandler() {\r
-\r
- AssociativeMap map = new AssociativeMap(Associativity.of(true, false, false));\r
-\r
- Object getPossibleObjectOrElement(Object o) {\r
- if (o instanceof IElement) {\r
- IElement e = (IElement) o;\r
- Object oo = e.getHint(ElementHints.KEY_OBJECT);\r
- return oo != null ? oo : e;\r
- }\r
- return o;\r
- }\r
-\r
- IElement getElement(Object o) {\r
- if (o instanceof IElement)\r
- return (IElement) o;\r
- return getMappedElement(o);\r
- }\r
-\r
- @Override\r
- public void claim(IDiagram diagram, Object subject,\r
- Relationship predicate, Object object) {\r
- Object sd = getPossibleObjectOrElement(subject);\r
- Object od = getPossibleObjectOrElement(object);\r
-\r
- Collection<Tuple> ts = null;\r
- Relationship inverse = predicate.getInverse();\r
- if (inverse != null)\r
- ts = Arrays.asList(new Tuple(sd, predicate, od), new Tuple(od, inverse, sd));\r
- else\r
- ts = Collections.singletonList(new Tuple(sd, predicate, od));\r
-\r
- synchronized (this) {\r
- map.add(ts);\r
- }\r
-\r
- if (DebugPolicy.DEBUG_RELATIONSHIP) {\r
- new Exception().printStackTrace();\r
- System.out.println("Claimed relationships:");\r
- for (Tuple t : ts)\r
- System.out.println("\t" + t);\r
- }\r
- }\r
-\r
- private void doDeny(IDiagram diagram, Object subject,\r
- Relationship predicate, Object object) {\r
- Object sd = getPossibleObjectOrElement(subject);\r
- Object od = getPossibleObjectOrElement(object);\r
- if (sd == subject || od == object) {\r
- System.out\r
- .println("WARNING: denying relationship '"\r
- + predicate\r
- + "' between diagram element(s), not back-end object(s): "\r
- + sd + " -> " + od);\r
- }\r
-\r
- Collection<Tuple> ts = null;\r
- Relationship inverse = predicate.getInverse();\r
- if (inverse != null)\r
- ts = Arrays.asList(new Tuple(sd, predicate, od), new Tuple(od,\r
- inverse, sd));\r
- else\r
- ts = Collections.singleton(new Tuple(sd, predicate, od));\r
-\r
- synchronized (this) {\r
- map.remove(ts);\r
- }\r
-\r
- if (DebugPolicy.DEBUG_RELATIONSHIP) {\r
- new Exception().printStackTrace();\r
- System.out.println("Denied relationships:");\r
- for (Tuple t : ts)\r
- System.out.println("\t" + t);\r
- }\r
- }\r
-\r
- @Override\r
- public void deny(IDiagram diagram, Object subject,\r
- Relationship predicate, Object object) {\r
- synchronized (this) {\r
- doDeny(diagram, subject, predicate, object);\r
- }\r
- }\r
-\r
- @Override\r
- public void deny(IDiagram diagram, Relation relation) {\r
- synchronized (this) {\r
- doDeny(diagram, relation.getSubject(), relation\r
- .getRelationship(), relation.getObject());\r
- }\r
- }\r
-\r
- @Override\r
- public void denyAll(IDiagram diagram, Object element) {\r
- synchronized (this) {\r
- for (Relation relation : getRelations(diagram, element, null)) {\r
- doDeny(diagram, relation.getSubject(), relation\r
- .getRelationship(), relation.getObject());\r
- }\r
- }\r
- }\r
-\r
- @Override\r
- public Collection<Relation> getRelations(IDiagram diagram,\r
- Object element, Collection<Relation> result) {\r
- if (DebugPolicy.DEBUG_GET_RELATIONSHIP)\r
- System.out.println("getRelations(" + element + ")");\r
- Object e = getPossibleObjectOrElement(element);\r
-\r
- Collection<Tuple> tuples = null;\r
- synchronized (this) {\r
- tuples = map.get(new Tuple(e, null, null), null);\r
- }\r
-\r
- if (DebugPolicy.DEBUG_GET_RELATIONSHIP) {\r
- System.out.println("Result size: " + tuples.size());\r
- for (Tuple t : tuples)\r
- System.out.println("\t" + t);\r
- }\r
-\r
- if (tuples.isEmpty())\r
- return Collections.emptyList();\r
- if (result == null)\r
- result = new ArrayList<Relation>(tuples.size());\r
- for (Tuple t : tuples) {\r
- Object obj = t.getField(2);\r
- IElement el = getElement(obj);\r
- Relationship r = (Relationship) t.getField(1);\r
- result.add(new Relation(element, r, el != null ? el : obj));\r
- }\r
- return result;\r
- }\r
-\r
- };\r
-\r
- // ------------------------------------------------------------------------\r
- // DIAGRAM ELEMENT RELATIONSHIP HANDLER END\r
- // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2018 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.diagram.adapter;
+
+import java.awt.geom.AffineTransform;
+import java.lang.reflect.InvocationTargetException;
+import java.util.ArrayDeque;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.Deque;
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Queue;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.locks.Condition;
+import java.util.concurrent.locks.ReentrantLock;
+
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.SubMonitor;
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.RequestProcessor;
+import org.simantics.db.Resource;
+import org.simantics.db.Session;
+import org.simantics.db.common.ResourceArray;
+import org.simantics.db.common.exception.DebugException;
+import org.simantics.db.common.procedure.adapter.AsyncProcedureAdapter;
+import org.simantics.db.common.procedure.adapter.CacheListener;
+import org.simantics.db.common.procedure.adapter.ListenerSupport;
+import org.simantics.db.common.procedure.adapter.ProcedureAdapter;
+import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
+import org.simantics.db.common.request.AsyncReadRequest;
+import org.simantics.db.common.request.ReadRequest;
+import org.simantics.db.common.session.SessionEventListenerAdapter;
+import org.simantics.db.common.utils.NameUtils;
+import org.simantics.db.exception.CancelTransactionException;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.exception.NoSingleResultException;
+import org.simantics.db.exception.ServiceException;
+import org.simantics.db.procedure.AsyncListener;
+import org.simantics.db.procedure.AsyncProcedure;
+import org.simantics.db.procedure.Listener;
+import org.simantics.db.procedure.Procedure;
+import org.simantics.db.request.Read;
+import org.simantics.db.service.SessionEventSupport;
+import org.simantics.diagram.connection.ConnectionSegmentEnd;
+import org.simantics.diagram.content.Change;
+import org.simantics.diagram.content.ConnectionUtil;
+import org.simantics.diagram.content.DesignatedTerminal;
+import org.simantics.diagram.content.DiagramContentChanges;
+import org.simantics.diagram.content.DiagramContents;
+import org.simantics.diagram.content.EdgeResource;
+import org.simantics.diagram.content.ResourceTerminal;
+import org.simantics.diagram.internal.DebugPolicy;
+import org.simantics.diagram.internal.timing.GTask;
+import org.simantics.diagram.internal.timing.Timing;
+import org.simantics.diagram.profile.ProfileKeys;
+import org.simantics.diagram.synchronization.CollectingModificationQueue;
+import org.simantics.diagram.synchronization.CompositeModification;
+import org.simantics.diagram.synchronization.CopyAdvisor;
+import org.simantics.diagram.synchronization.ErrorHandler;
+import org.simantics.diagram.synchronization.IHintSynchronizer;
+import org.simantics.diagram.synchronization.IModifiableSynchronizationContext;
+import org.simantics.diagram.synchronization.IModification;
+import org.simantics.diagram.synchronization.LogErrorHandler;
+import org.simantics.diagram.synchronization.ModificationAdapter;
+import org.simantics.diagram.synchronization.SynchronizationHints;
+import org.simantics.diagram.synchronization.graph.AddElement;
+import org.simantics.diagram.synchronization.graph.BasicResources;
+import org.simantics.diagram.synchronization.graph.DiagramGraphUtil;
+import org.simantics.diagram.synchronization.graph.ElementLoader;
+import org.simantics.diagram.synchronization.graph.ElementReorder;
+import org.simantics.diagram.synchronization.graph.ElementWriter;
+import org.simantics.diagram.synchronization.graph.GraphSynchronizationContext;
+import org.simantics.diagram.synchronization.graph.GraphSynchronizationHints;
+import org.simantics.diagram.synchronization.graph.ModificationQueue;
+import org.simantics.diagram.synchronization.graph.TagChange;
+import org.simantics.diagram.synchronization.graph.TransformElement;
+import org.simantics.diagram.synchronization.graph.layer.GraphLayer;
+import org.simantics.diagram.synchronization.graph.layer.GraphLayerManager;
+import org.simantics.diagram.ui.DiagramModelHints;
+import org.simantics.g2d.canvas.Hints;
+import org.simantics.g2d.canvas.ICanvasContext;
+import org.simantics.g2d.connection.ConnectionEntity;
+import org.simantics.g2d.connection.EndKeyOf;
+import org.simantics.g2d.connection.TerminalKeyOf;
+import org.simantics.g2d.diagram.DiagramClass;
+import org.simantics.g2d.diagram.DiagramHints;
+import org.simantics.g2d.diagram.DiagramMutator;
+import org.simantics.g2d.diagram.DiagramUtils;
+import org.simantics.g2d.diagram.IDiagram;
+import org.simantics.g2d.diagram.IDiagram.CompositionListener;
+import org.simantics.g2d.diagram.IDiagram.CompositionVetoListener;
+import org.simantics.g2d.diagram.handler.DataElementMap;
+import org.simantics.g2d.diagram.handler.ElementFactory;
+import org.simantics.g2d.diagram.handler.Relationship;
+import org.simantics.g2d.diagram.handler.RelationshipHandler;
+import org.simantics.g2d.diagram.handler.SubstituteElementClass;
+import org.simantics.g2d.diagram.handler.Topology;
+import org.simantics.g2d.diagram.handler.Topology.Connection;
+import org.simantics.g2d.diagram.handler.Topology.Terminal;
+import org.simantics.g2d.diagram.handler.TransactionContext.TransactionType;
+import org.simantics.g2d.diagram.impl.Diagram;
+import org.simantics.g2d.diagram.participant.ElementPainter;
+import org.simantics.g2d.element.ElementClass;
+import org.simantics.g2d.element.ElementHints;
+import org.simantics.g2d.element.ElementHints.DiscardableKey;
+import org.simantics.g2d.element.ElementUtils;
+import org.simantics.g2d.element.IElement;
+import org.simantics.g2d.element.IElementClassProvider;
+import org.simantics.g2d.element.handler.EdgeVisuals.EdgeEnd;
+import org.simantics.g2d.element.handler.ElementHandler;
+import org.simantics.g2d.element.handler.ElementLayerListener;
+import org.simantics.g2d.element.handler.TerminalTopology;
+import org.simantics.g2d.element.impl.Element;
+import org.simantics.g2d.layers.ILayer;
+import org.simantics.g2d.layers.ILayersEditor;
+import org.simantics.g2d.routing.RouterFactory;
+import org.simantics.scenegraph.INode;
+import org.simantics.scenegraph.profile.DataNodeConstants;
+import org.simantics.scenegraph.profile.DataNodeMap;
+import org.simantics.scenegraph.profile.common.ProfileObserver;
+import org.simantics.structural2.modelingRules.IModelingRules;
+import org.simantics.utils.datastructures.ArrayMap;
+import org.simantics.utils.datastructures.MapSet;
+import org.simantics.utils.datastructures.Pair;
+import org.simantics.utils.datastructures.disposable.AbstractDisposable;
+import org.simantics.utils.datastructures.hints.HintListenerAdapter;
+import org.simantics.utils.datastructures.hints.IHintContext.Key;
+import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
+import org.simantics.utils.datastructures.hints.IHintListener;
+import org.simantics.utils.datastructures.hints.IHintObservable;
+import org.simantics.utils.datastructures.map.AssociativeMap;
+import org.simantics.utils.datastructures.map.Associativity;
+import org.simantics.utils.datastructures.map.Tuple;
+import org.simantics.utils.strings.EString;
+import org.simantics.utils.threads.ThreadUtils;
+import org.simantics.utils.threads.logger.ITask;
+import org.simantics.utils.threads.logger.ThreadLogger;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import gnu.trove.map.hash.TObjectIntHashMap;
+import gnu.trove.set.hash.THashSet;
+
+/**
+ * This class loads a diagram contained in the graph database into the runtime
+ * diagram model and synchronizes changes in the graph into the run-time
+ * diagram. Any modifications to the graph model will be reflected to the
+ * run-time diagram model. Hence the name GraphToDiagramSynchronizer.
+ *
+ * <p>
+ * This class does not in itself support modification of the graph diagram
+ * model. This manipulation is meant to be performed through a
+ * {@link DiagramMutator} implementation that is installed into the diagram
+ * using the {@link DiagramHints#KEY_MUTATOR} hint key.
+ *
+ * This implementations is built to only support diagrams defined in the graph
+ * model as indicated in <a
+ * href="https://www.simantics.org/wiki/index.php/Org.simantics.diagram" >this
+ * </a> document.
+ *
+ * <p>
+ * The synchronizer in itself is an {@link IDiagramLoader} which means that it
+ * can be used for loading a diagram from the graph. In order for the
+ * synchronizer to keep tracking the graph diagram model for changes the diagram
+ * must be loaded with it. The tracking is implemented using graph database
+ * queries. If you just want to load the diagram but detach it from the
+ * synchronizer's tracking mechanisms, all you need to do is to dispose the
+ * synchronizer after loading the diagram.
+ *
+ * <p>
+ * This class guarantees that a single diagram element (IElement) representing a
+ * single back-end object ({@link ElementHints#KEY_OBJECT}) will stay the same
+ * object for the same back-end object.
+ *
+ * <p>
+ * TODO: Currently it just happens that {@link GraphToDiagramSynchronizer}
+ * contains {@link DefaultDiagramMutator} which depends on some internal details
+ * of {@link GraphToDiagramSynchronizer} but it should be moved out of here by
+ * introducing new interfaces.
+ *
+ * <h2>Basic usage example</h2>
+ * <p>
+ * This example shows how to initialize {@link GraphToDiagramSynchronizer} for a
+ * specified {@link ICanvasContext} and load a diagram from a specified diagram
+ * resource in the graph.
+ *
+ * <pre>
+ * IDiagram loadDiagram(final ICanvasContext canvasContext, RequestProcessor processor, Resource diagramResource,
+ * ResourceArray structuralPath) throws DatabaseException {
+ * GraphToDiagramSynchronizer synchronizer = processor.syncRequest(new Read<GraphToDiagramSynchronizer>() {
+ * public GraphToDiagramSynchronizer perform(ReadGraph graph) throws DatabaseException {
+ * return new GraphToDiagramSynchronizer(graph, canvasContext, createElementClassProvider(graph));
+ * }
+ * });
+ * IDiagram d = requestProcessor
+ * .syncRequest(new DiagramLoadQuery(diagramResource, structuralPath, synchronizer, null));
+ * return d;
+ * }
+ *
+ * protected IElementClassProvider createElementClassProvider(ReadGraph graph) {
+ * DiagramResource dr = DiagramResource.getInstance(graph);
+ * return ElementClassProviders.mappedProvider(ElementClasses.CONNECTION, DefaultConnectionClassFactory.CLASS
+ * .newClassWith(new ResourceAdapterImpl(dr.Connection)), ElementClasses.FLAG, FlagClassFactory
+ * .createFlagClass(dr.Flag));
+ * }
+ * </pre>
+ *
+ * <p>
+ * TODO: make GraphToDiagramSynchronizer a canvas participant to make it more
+ * uniform with the rest of the canvas system. This does not mean that G2DS must
+ * be attached to an ICanvasContext in order to be used, rather that it can be
+ * attached to one.
+ *
+ * <p>
+ * TODO: test that detaching the synchronizer via {@link #dispose()} actually
+ * works.
+ * <p>
+ * TODO: remove {@link DefaultDiagramMutator} and all {@link DiagramMutator}
+ * stuff altogether
+ *
+ * <p>
+ * TODO: diagram connection loading has no listener
+ *
+ * @author Tuukka Lehtonen
+ *
+ * @see GraphElementClassFactory
+ * @see GraphElementFactory
+ * @see ElementLoader
+ * @see ElementWriter
+ * @see IHintSynchronizer
+ * @see CopyAdvisor
+ */
+public class GraphToDiagramSynchronizer extends AbstractDisposable implements IDiagramLoader, IModifiableSynchronizationContext {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(GraphToDiagramSynchronizer.class);
+
+ /**
+ * Controls whether the class adds hint listeners to each diagram element
+ * that try to perform basic sanity checks on changes happening in element
+ * hints. Having this will immediately inform you of bugs that corrupt the
+ * diagram model within the element hints in some way.
+ */
+ private static final boolean USE_ELEMENT_VALIDATING_LISTENERS = false;
+
+ /**
+ * These keys are used to hang on to Connection instances of edges that will
+ * be later installed as EndKeyOf/TerminalKeyOf hints into the loaded
+ * element during the "graph to diagram update transaction".
+ */
+ private static final Key KEY_CONNECTION_BEGIN_PLACEHOLDER = new KeyOf(PlaceholderConnection.class, "CONNECTION_BEGIN_PLACEHOLDER");
+ private static final Key KEY_CONNECTION_END_PLACEHOLDER = new KeyOf(PlaceholderConnection.class, "CONNECTION_END_PLACEHOLDER");
+
+ /**
+ * Stored into an edge node during connection edge requests using the
+ * KEY_CONNECTION_BEGIN_PLACEHOLDER and KEY_CONNECTION_END_PLACEHOLDER keys.
+ */
+ static class PlaceholderConnection {
+ public final EdgeEnd end;
+ public final Object node;
+ public final Terminal terminal;
+ public PlaceholderConnection(EdgeEnd end, Object node, Terminal terminal) {
+ this.end = end;
+ this.node = node;
+ this.terminal = terminal;
+ }
+ }
+
+ /**
+ * Indicates to the diagram CompositionListener of this synchronizer that is
+ * should deny all relationships for the element this hint is attached to.
+ */
+ private static final Key KEY_REMOVE_RELATIONSHIPS = new KeyOf(Boolean.class, "REMOVE_RELATIONSHIPS");
+
+ static ErrorHandler errorHandler = LogErrorHandler.INSTANCE;
+
+ /**
+ * The canvas context which is being synchronized with the graph. Received
+ * during construction.
+ *
+ * <p>
+ * Is not nulled during disposal of this class since internal listener's
+ * life-cycles depend on canvas.isDisposed.
+ */
+ ICanvasContext canvas;
+
+ /**
+ * The session used by this synchronizer. Received during construction.
+ */
+ Session session;
+
+ /**
+ * Locked while updating diagram contents from the graph.
+ */
+ ReentrantLock diagramUpdateLock = new ReentrantLock();
+
+ // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ // BI-DIRECTIONAL DIAGRAM ELEMENT <-> BACKEND OBJECT MAPPING BEGIN
+ // ------------------------------------------------------------------------
+
+ /**
+ * Holds a GraphToDiagramUpdater instance while a diagram content update is
+ * currently in progress.
+ *
+ * <p>
+ * Basically this is a hack solution to the problem of properly finding
+ * newly added Resource<->IElement mappings while loading the diagram
+ * contents. See {@link DataElementMapImpl} for why this is necessary.
+ */
+ GraphToDiagramUpdater currentUpdater = null;
+
+ /**
+ * A map from data objects to elements. Elements should already contain the
+ * data objects as {@link ElementHints#KEY_OBJECT} hints.
+ */
+ ConcurrentMap<Object, IElement> dataElement = new ConcurrentHashMap<Object, IElement>();
+
+ /**
+ * Temporary structure for single-threaded use in #{@link DiagramUpdater}.
+ */
+ Collection<Connection> tempConnections = new ArrayList<Connection>();
+
+ /**
+ * A dummy class of which an instance will be given to each new edge element
+ * to make {@link TerminalKeyOf} keys unique for each edge.
+ */
+ static class TransientElementObject {
+ @Override
+ public String toString() {
+ return "MUTATOR GENERATED (hash=" + System.identityHashCode(this) + ")";
+ }
+ }
+
+ private static class ConnectionChildren {
+ public Set<IElement> branchPoints;
+ public Set<IElement> segments;
+
+ public ConnectionChildren(Set<IElement> branchPoints, Set<IElement> segments) {
+ this.branchPoints = branchPoints;
+ this.segments = segments;
+ }
+ }
+
+ ListenerSupport canvasListenerSupport = new ListenerSupport() {
+ @Override
+ public void exception(Throwable t) {
+ error(t);
+ }
+
+ @Override
+ public boolean isDisposed() {
+ return !isAlive() || canvas.isDisposed();
+ }
+ };
+
+ /**
+ * @see ElementHints#KEY_CONNECTION_ENTITY
+ */
+ class ConnectionEntityImpl implements ConnectionEntity {
+
+ /**
+ * The connection instance resource in the graph backend.
+ *
+ * May be <code>null</code> if the connection has not been synchronized
+ * yet.
+ */
+ Resource connection;
+
+ /**
+ * The connection type resource in the graph backend.
+ *
+ * May be <code>null</code> if the connection has not been synchronized
+ * yet.
+ */
+ Resource connectionType;
+
+ /**
+ * The connection entity element which is a part of the diagram.
+ */
+ IElement connectionElement;
+
+ /**
+ * List of backend-synchronized branch points that are part of this
+ * connection.
+ */
+ Collection<Resource> branchPoints = Collections.emptyList();
+
+ /**
+ * List of backend-synchronized edges that are part of this connection.
+ */
+ Collection<EdgeResource> segments = Collections.emptyList();
+
+ Set<Object> removedBranchPoints = new HashSet<Object>(4);
+
+ Set<Object> removedSegments = new HashSet<Object>(4);
+
+ /**
+ * List of non-backend-synchronized branch point element that are part
+ * of this connection.
+ */
+ List<IElement> branchPointElements = new ArrayList<IElement>(1);
+
+ /**
+ * List of non-backend-synchronized edge element that are part of this
+ * connection.
+ */
+ List<IElement> segmentElements = new ArrayList<IElement>(2);
+
+ ConnectionListener listener;
+
+ ConnectionEntityImpl(Resource connection, Resource connectionType, IElement connectionElement) {
+ this.connection = connection;
+ this.connectionType = connectionType;
+ this.connectionElement = connectionElement;
+ }
+
+ ConnectionEntityImpl(Resource connectionType, IElement connectionElement) {
+ this.connectionType = connectionType;
+ this.connectionElement = connectionElement;
+ }
+
+ ConnectionEntityImpl(ReadGraph graph, Resource connection, IElement connectionElement)
+ throws NoSingleResultException, ServiceException {
+ this.connection = connection;
+ this.connectionType = graph.getSingleType(connection, br.DIA.Connection);
+ this.connectionElement = connectionElement;
+ }
+
+ @Override
+ public IElement getConnection() {
+ return connectionElement;
+ }
+
+ public Object getConnectionObject() {
+ return connection;
+ }
+
+ public IElement getConnectionElement() {
+ if (connectionElement == null)
+ return getMappedConnectionElement();
+ return connectionElement;
+ }
+
+ private IElement getMappedConnectionElement() {
+ IElement ce = null;
+ if (connection != null)
+ ce = getMappedElement(connection);
+ return ce == null ? connectionElement : ce;
+ }
+
+ void fix() {
+ Collection<IElement> segments = getSegments(null);
+
+ // Remove all TerminalKeyOf hints from branch points that do not
+ // match
+ ArrayList<TerminalKeyOf> pruned = null;
+ for (IElement bp : getBranchPoints(null)) {
+ if (pruned == null)
+ pruned = new ArrayList<TerminalKeyOf>(4);
+ pruned.clear();
+ for (Map.Entry<TerminalKeyOf, Object> entry : bp.getHintsOfClass(TerminalKeyOf.class).entrySet()) {
+ // First check that the terminal matches.
+ Connection c = (Connection) entry.getValue();
+ if (!segments.contains(c.edge))
+ pruned.add(entry.getKey());
+ }
+ removeNodeTopologyHints((Element) bp, pruned);
+ }
+ }
+
+ public ConnectionChildren getConnectionChildren() {
+ Set<IElement> bps = Collections.emptySet();
+ Set<IElement> segs = Collections.emptySet();
+ if (!branchPoints.isEmpty()) {
+ bps = new HashSet<IElement>(branchPoints.size());
+ for (Resource bp : branchPoints) {
+ IElement e = getMappedElement(bp);
+ if (e != null)
+ bps.add(e);
+ }
+ }
+ if (!segments.isEmpty()) {
+ segs = new HashSet<IElement>(segments.size());
+ for (EdgeResource seg : segments) {
+ IElement e = getMappedElement(seg);
+ if (e != null)
+ segs.add(e);
+ }
+ }
+ return new ConnectionChildren(bps, segs);
+ }
+
+ public void setData(Collection<EdgeResource> segments, Collection<Resource> branchPoints) {
+ // System.out.println("setData " + segments.size());
+ this.branchPoints = branchPoints;
+ this.segments = segments;
+
+ // Reset the added/removed state of segments and branchpoints.
+ this.removedBranchPoints = new HashSet<Object>(4);
+ this.removedSegments = new HashSet<Object>(4);
+ this.branchPointElements = new ArrayList<IElement>(4);
+ this.segmentElements = new ArrayList<IElement>(4);
+ }
+
+ public void fireListener(ConnectionChildren old, ConnectionChildren current) {
+ if (listener != null) {
+ List<IElement> removed = new ArrayList<IElement>();
+ List<IElement> added = new ArrayList<IElement>();
+
+ for (IElement oldBp : old.branchPoints)
+ if (!current.branchPoints.contains(oldBp))
+ removed.add(oldBp);
+ for (IElement oldSeg : old.segments)
+ if (!current.segments.contains(oldSeg))
+ removed.add(oldSeg);
+
+ for (IElement bp : current.branchPoints)
+ if (!old.branchPoints.contains(bp))
+ added.add(bp);
+ for (IElement seg : current.segments)
+ if (!old.segments.contains(seg))
+ added.add(seg);
+
+ if (!removed.isEmpty() || !added.isEmpty()) {
+ listener.connectionChanged(new ConnectionEvent(this.connectionElement, removed, added));
+ }
+ }
+ }
+
+ @Override
+ public Collection<IElement> getBranchPoints(Collection<IElement> result) {
+ if (result == null)
+ result = new ArrayList<IElement>(branchPoints.size());
+ for (Resource bp : branchPoints) {
+ if (!removedBranchPoints.contains(bp)) {
+ IElement e = getMappedElement(bp);
+ if (e != null)
+ result.add(e);
+ }
+ }
+ result.addAll(branchPointElements);
+ return result;
+ }
+
+ @Override
+ public Collection<IElement> getSegments(Collection<IElement> result) {
+ if (result == null)
+ result = new ArrayList<IElement>(segments.size());
+ for (EdgeResource seg : segments) {
+ if (!removedSegments.contains(seg)) {
+ IElement e = getMappedElement(seg);
+ if (e != null)
+ result.add(e);
+ }
+ }
+ result.addAll(segmentElements);
+ return result;
+ }
+
+ @Override
+ public Collection<Connection> getTerminalConnections(Collection<Connection> result) {
+ if (result == null)
+ result = new ArrayList<Connection>(segments.size() * 2);
+ Set<org.simantics.utils.datastructures.Pair<IElement, Terminal>> processed = new HashSet<org.simantics.utils.datastructures.Pair<IElement, Terminal>>();
+ for (EdgeResource seg : segments) {
+ IElement edge = getMappedElement(seg);
+ if (edge != null) {
+ for (EndKeyOf key : EndKeyOf.KEYS) {
+ Connection c = edge.getHint(key);
+ if (c != null && (c.terminal instanceof ResourceTerminal) && processed.add(Pair.make(c.node, c.terminal)))
+ result.add(c);
+ }
+ }
+ }
+ return result;
+ }
+
+ @Override
+ public void setListener(ConnectionListener listener) {
+ this.listener = listener;
+ }
+
+ @Override
+ public String toString() {
+ return getClass().getSimpleName() + "[resource=" + connection + ", branch points=" + branchPoints
+ + ", segments=" + segments + ", connectionElement=" + connectionElement
+ + ", branch point elements=" + branchPointElements + ", segment elements=" + segmentElements
+ + ", removed branch points=" + removedBranchPoints + ", removed segments=" + removedSegments + "]";
+ }
+
+ }
+
+ /**
+ * A map from connection data objects to connection entities. The connection
+ * part elements should already contain the data objects as
+ * {@link ElementHints#KEY_OBJECT} hints.
+ */
+ ConcurrentMap<Object, ConnectionEntityImpl> dataConnection = new ConcurrentHashMap<Object, ConnectionEntityImpl>();
+
+ /**
+ * @param data
+ * @param element
+ */
+ void mapElement(final Object data, final IElement element) {
+ if (!(element instanceof Element)) {
+ throw new IllegalArgumentException("mapElement: expected instance of Element, got " + element + " with data " + data);
+ }
+ assert data != null;
+ assert element != null;
+ if (DebugPolicy.DEBUG_MAPPING)
+ new Exception(Thread.currentThread() + " MAPPING: " + data + " -> " + element).printStackTrace();
+ dataElement.put(data, element);
+ }
+
+ /**
+ * @param data
+ * @return
+ */
+ IElement getMappedElement(final Object data) {
+ assert (data != null);
+ IElement element = dataElement.get(data);
+ return element;
+ }
+
+ IElement getMappedElementByElementObject(IElement e) {
+ if (e == null)
+ return null;
+ Object o = e.getHint(ElementHints.KEY_OBJECT);
+ if (o == null)
+ return null;
+ return getMappedElement(o);
+ }
+
+ /**
+ * @param data
+ * @return
+ */
+ IElement assertMappedElement(final Object data) {
+ IElement element = dataElement.get(data);
+ assert element != null;
+ return element;
+ }
+
+ /**
+ * @param data
+ * @return
+ */
+ IElement unmapElement(final Object data) {
+ IElement element = dataElement.remove(data);
+ if (DebugPolicy.DEBUG_MAPPING)
+ new Exception(Thread.currentThread() + " UN-MAPPED: " + data + " -> " + element).printStackTrace();
+ return element;
+ }
+
+ /**
+ * @param data
+ * @param element
+ */
+ void mapConnection(final Object data, final ConnectionEntityImpl connection) {
+ assert data != null;
+ assert connection != null;
+ if (DebugPolicy.DEBUG_MAPPING)
+ System.out.println(Thread.currentThread() + " MAPPING CONNECTION: " + data + " -> " + connection);
+ dataConnection.put(data, connection);
+ }
+
+ /**
+ * @param data
+ * @return
+ */
+ ConnectionEntityImpl getMappedConnection(final Object data) {
+ ConnectionEntityImpl connection = dataConnection.get(data);
+ return connection;
+ }
+
+ /**
+ * @param data
+ * @return
+ */
+ ConnectionEntityImpl assertMappedConnection(final Object data) {
+ ConnectionEntityImpl connection = getMappedConnection(data);
+ assert connection != null;
+ return connection;
+ }
+
+ /**
+ * @param data
+ * @return
+ */
+ ConnectionEntityImpl unmapConnection(final Object data) {
+ ConnectionEntityImpl connection = dataConnection.remove(data);
+ if (DebugPolicy.DEBUG_MAPPING)
+ System.out.println(Thread.currentThread() + " UN-MAPPED CONNECTION: " + data + " -> " + connection);
+ return connection;
+ }
+
+ class DataElementMapImpl implements DataElementMap {
+ @Override
+ public Object getData(IDiagram d, IElement element) {
+ if (d == null)
+ throw new NullPointerException("null diagram");
+ if (element == null)
+ throw new NullPointerException("null element");
+
+ assert ElementUtils.getDiagram(element) == d;
+ return element.getHint(ElementHints.KEY_OBJECT);
+ }
+
+ @Override
+ public IElement getElement(IDiagram d, Object data) {
+ if (d == null)
+ throw new NullPointerException("null diagram");
+ if (data == null)
+ throw new NullPointerException("null data");
+
+ GraphToDiagramUpdater updater = currentUpdater;
+ if (updater != null) {
+ // This HACK is for allowing GraphElementFactory implementations
+ // to find the IElements they are related to.
+ IElement e = updater.addedElementMap.get(data);
+ if (e != null)
+ return e;
+ }
+
+ IElement e = getMappedElement(data);
+ if (e != null)
+ return e;
+ return null;
+ }
+ }
+
+ class SubstituteElementClassImpl implements SubstituteElementClass {
+ @Override
+ public ElementClass substitute(IDiagram d, ElementClass ec) {
+ if (d != diagram)
+ throw new IllegalArgumentException("specified diagram does not have this SubstituteElementClass handler");
+
+ // If the element class is our own, there's no point in creating
+ // a copy of it.
+ if (ec.contains(elementLayerListener))
+ return ec;
+
+ List<ElementHandler> all = ec.getAll();
+ List<ElementHandler> result = new ArrayList<ElementHandler>(all.size());
+ for (ElementHandler eh : all) {
+ if (eh instanceof ElementLayerListenerImpl)
+ result.add(elementLayerListener);
+ else
+ result.add(eh);
+ }
+ return ElementClass.compile(result, false).setId(ec.getId());
+ }
+ }
+
+ final DataElementMapImpl dataElementMap = new DataElementMapImpl();
+
+ final SubstituteElementClassImpl substituteElementClass = new SubstituteElementClassImpl();
+
+ // ------------------------------------------------------------------------
+ // BI-DIRECTIONAL DIAGRAM ELEMENT <-> BACKEND OBJECT MAPPING END
+ // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+
+ void warning(String message, Exception e) {
+ errorHandler.warning(message, e);
+ }
+
+ void warning(Exception e) {
+ errorHandler.warning(e.getMessage(), e);
+ }
+
+ void error(String message, Throwable e) {
+ errorHandler.error(message, e);
+ }
+
+ void error(Throwable e) {
+ errorHandler.error(e.getMessage(), e);
+ }
+
+ // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ // GRAPH MODIFICATION QUEUE BEGIN
+ // ------------------------------------------------------------------------
+
+ ModificationQueue modificationQueue;
+ IModifiableSynchronizationContext synchronizationContext;
+
+ @Override
+ public <T> T set(Key key, Object value) {
+ if (synchronizationContext == null)
+ return null;
+ return synchronizationContext.set(key, value);
+ }
+
+ @Override
+ public <T> T get(Key key) {
+ if (synchronizationContext == null)
+ return null;
+ return synchronizationContext.get(key);
+ }
+
+ // ------------------------------------------------------------------------
+ // GRAPH MODIFICATION QUEUE END
+ // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+
+ /**
+ * The previously loaded version of the diagram content. This is needed to
+ * calculate the difference between new and old content on each
+ * {@link #diagramGraphUpdater(DiagramContents)} invocation.
+ */
+ DiagramContents previousContent;
+
+ /**
+ * The diagram instance that this synchronizer is synchronizing with the
+ * graph.
+ */
+ IDiagram diagram;
+
+ /**
+ * An observer for diagram profile entries. Has a life-cycle that must be
+ * bound to the life-cycle of this GraphToDiagramSynchronizer instance.
+ * Disposed if synchronizer is detached in {@link #doDispose()} or finally
+ * when the canvas is disposed.
+ */
+ ProfileObserver profileObserver;
+
+ IElementClassProvider elementClassProvider;
+
+ BasicResources br;
+
+ // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ // Internal state machine handling BEGIN
+ // ------------------------------------------------------------------------
+
+ /**
+ * An indicator for the current state of this synchronizer. This is a simple
+ * state machine with the following possible state transitions:
+ *
+ * <ul>
+ * <li>INITIAL -> LOADING, DISPOSED</li>
+ * <li>LOADING -> IDLE</li>
+ * <li>IDLE -> UPDATING_DIAGRAM, DISPOSED</li>
+ * <li>UPDATING_DIAGRAM -> IDLE</li>
+ * </ul>
+ *
+ * Start states: INITIAL
+ * End states: DISPOSED
+ */
+ static enum State {
+ /**
+ * The initial state of the synchronizer.
+ */
+ INITIAL,
+ /**
+ * The synchronizer is performing load-time initialization. During this
+ * time no canvas refreshes should be forced.
+ */
+ LOADING,
+ /**
+ * The synchronizer is performing updates to the diagram model. This
+ * process goes on in the canvas context thread.
+ */
+ UPDATING_DIAGRAM,
+ /**
+ * The synchronizer is doing nothing.
+ */
+ IDLE,
+ /**
+ * The synchronized diagram is being disposed, which means that this
+ * synchronizer should not accept any further actions.
+ */
+ DISPOSED,
+ }
+
+ public static final EnumSet<State> FROM_INITIAL = EnumSet.of(State.LOADING, State.DISPOSED);
+ public static final EnumSet<State> FROM_LOADING = EnumSet.of(State.IDLE);
+ public static final EnumSet<State> FROM_UPDATING_DIAGRAM = EnumSet.of(State.IDLE);
+ public static final EnumSet<State> FROM_IDLE = EnumSet.of(State.UPDATING_DIAGRAM, State.DISPOSED);
+ public static final EnumSet<State> NO_STATES = EnumSet.noneOf(State.class);
+
+ private EnumSet<State> validTargetStates(State start) {
+ switch (start) {
+ case INITIAL: return FROM_INITIAL;
+ case LOADING: return FROM_LOADING;
+ case UPDATING_DIAGRAM: return FROM_UPDATING_DIAGRAM;
+ case IDLE: return FROM_IDLE;
+ case DISPOSED: return NO_STATES;
+ }
+ throw new IllegalArgumentException("unrecognized state " + start);
+ }
+
+ private String validateStateChange(State start, State end) {
+ EnumSet<State> validTargets = validTargetStates(start);
+ if (!validTargets.contains(end))
+ return "Cannot transition from " + start + " state to " + end + ".";
+ return null;
+ }
+
+ /**
+ * The current state of the synchronizer. At start it is
+ * {@link State#INITIAL} and after loading it is {@link State#IDLE}.
+ */
+ State synchronizerState = State.INITIAL;
+
+ /**
+ * A condition variable used to synchronize synchronizer state changes.
+ */
+ ReentrantLock stateLock = new ReentrantLock();
+
+ /**
+ * A condition that is signaled when the synchronizer state changes to IDLE.
+ */
+ Condition idleCondition = stateLock.newCondition();
+
+ State getState() {
+ return synchronizerState;
+ }
+
+ /**
+ * Activates the desired state after making sure that the synchronizer has
+ * been IDLE in between its current state and this invocation.
+ *
+ * @param newState the new state to activate
+ * @throws InterruptedException if waiting for IDLE state gets interrupted
+ * @throws IllegalStateException if the requested transition from the
+ * current state to the desired state would be illegal.
+ */
+ void activateState(State newState, boolean waitForIdle) throws InterruptedException {
+ stateLock.lock();
+ try {
+ // Wait until the state of the synchronizer IDLEs if necessary.
+ if (waitForIdle && synchronizerState != State.IDLE) {
+ String error = validateStateChange(synchronizerState, State.IDLE);
+ if (error != null)
+ throw new IllegalStateException(error);
+
+ while (synchronizerState != State.IDLE) {
+ if (DebugPolicy.DEBUG_STATE)
+ System.out.println(Thread.currentThread() + " waiting for IDLE state, current="
+ + synchronizerState);
+ idleCondition.await();
+ }
+ }
+
+ String error = validateStateChange(synchronizerState, newState);
+ if (error != null)
+ throw new IllegalStateException(error);
+
+ if (DebugPolicy.DEBUG_STATE)
+ System.out.println(Thread.currentThread() + " activated state " + newState);
+ this.synchronizerState = newState;
+
+ if (newState == State.IDLE)
+ idleCondition.signalAll();
+ } finally {
+ stateLock.unlock();
+ }
+ }
+
+ void idle() throws IllegalStateException, InterruptedException {
+ activateState(State.IDLE, false);
+ }
+
+ static interface StateRunnable extends Runnable {
+ void execute() throws InvocationTargetException;
+
+ public abstract class Stub implements StateRunnable {
+ @Override
+ public void run() {
+ }
+
+ @Override
+ public final void execute() throws InvocationTargetException {
+ try {
+ perform();
+ } catch (Exception e) {
+ throw new InvocationTargetException(e);
+ } catch (LinkageError e) {
+ throw new InvocationTargetException(e);
+ }
+ }
+
+ protected abstract void perform() throws Exception;
+ }
+ }
+
+ protected void runInState(State state, StateRunnable runnable) throws InvocationTargetException {
+ try {
+ activateState(state, true);
+ try {
+ runnable.execute();
+ } finally {
+ idle();
+ }
+ } catch (IllegalStateException e) {
+ throw new InvocationTargetException(e);
+ } catch (InterruptedException e) {
+ throw new InvocationTargetException(e);
+ }
+ }
+
+ protected void safeRunInState(State state, StateRunnable runnable) {
+ try {
+ runInState(state, runnable);
+ } catch (InvocationTargetException e) {
+ error("Failed to run runnable " + runnable + " in state " + state + ". See exception for details.", e
+ .getCause());
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // Internal state machine handling END
+ // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+
+ /**
+ * @param processor
+ * @param canvas
+ * @param elementClassProvider
+ * @throws DatabaseException
+ */
+ public GraphToDiagramSynchronizer(RequestProcessor processor, ICanvasContext canvas, IElementClassProvider elementClassProvider) throws DatabaseException {
+ if (processor == null)
+ throw new IllegalArgumentException("null processor");
+ if (canvas == null)
+ throw new IllegalArgumentException("null canvas");
+ if (elementClassProvider == null)
+ throw new IllegalArgumentException("null element class provider");
+
+ this.session = processor.getSession();
+ this.canvas = canvas;
+ this.modificationQueue = new ModificationQueue(session, errorHandler);
+
+ processor.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ initializeResources(graph);
+ }
+ });
+
+ this.elementClassProvider = elementClassProvider;
+ synchronizationContext.set(SynchronizationHints.ELEMENT_CLASS_PROVIDER, elementClassProvider);
+
+ attachSessionListener(processor.getSession());
+ }
+
+ /**
+ * @return
+ */
+ public IElementClassProvider getElementClassProvider() {
+ return elementClassProvider;
+ }
+
+ public Session getSession() {
+ return session;
+ }
+
+ public ICanvasContext getCanvasContext() {
+ return canvas;
+ }
+
+ public IDiagram getDiagram() {
+ return diagram;
+ }
+
+ void setCanvasDirty() {
+ ICanvasContext c = canvas;
+ if (synchronizerState != State.LOADING && c != null && !c.isDisposed()) {
+ // TODO: Consider adding an invocation limiter here, to prevent
+ // calling setDirty too often if enough time hasn't passed yet since
+ // the last invocation.
+ c.getContentContext().setDirty();
+ }
+ }
+
+ /**
+ * @param elementType
+ * @return
+ * @throws DatabaseException if ElementClass cannot be retrieved
+ */
+ public ElementClass getNodeClass(Resource elementType) throws DatabaseException {
+ return getNodeClass(session, elementType);
+ }
+
+ public ElementClass getNodeClass(RequestProcessor processor, Resource elementType) throws DatabaseException {
+ ElementClass ec = processor.syncRequest(new NodeClassRequest(canvas, diagram, elementType, true));
+ return ec;
+ }
+
+ @Override
+ protected void doDispose() {
+ try {
+ try {
+ stateLock.lock();
+ boolean isInitial = getState() == State.INITIAL;
+ activateState(State.DISPOSED, !isInitial);
+ } finally {
+ stateLock.unlock();
+ }
+ } catch (InterruptedException e) {
+ // Shouldn't happen.
+ LOGGER.error("Dispose interrupted!", e);
+ } finally {
+ detachSessionListener();
+
+ if (profileObserver != null) {
+ profileObserver.dispose();
+ profileObserver = null;
+ }
+
+ if (diagram != null) {
+ diagram.removeCompositionListener(diagramListener);
+ diagram.removeCompositionVetoListener(diagramListener);
+ }
+
+ // TODO: we should probably leave the dataElement map as is since DataElementMap needs it even after the synchronizer has been disposed.
+ // Currently the diagram's DataElementMap will be broken after disposal.
+// dataElement.clear();
+// dataConnection.clear();
+
+ if (layerManager != null) {
+ layerManager.dispose();
+ }
+
+ // Let GC work.
+ modificationQueue.dispose();
+ }
+ }
+
+ void initializeResources(ReadGraph graph) {
+ this.br = new BasicResources(graph);
+
+ // Initialize synchronization context
+ synchronizationContext = new GraphSynchronizationContext(graph, modificationQueue);
+ synchronizationContext.set(SynchronizationHints.ERROR_HANDLER, errorHandler);
+ }
+
+ // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ // LAYERS BEGIN
+ // ------------------------------------------------------------------------
+
+ GraphLayerManager layerManager;
+
+ /**
+ * A common handler for all elements that is used to listen to changes in
+ * element visibility and focusability on diagram layers.
+ */
+ class ElementLayerListenerImpl implements ElementLayerListener {
+ private static final long serialVersionUID = -3410052116598828129L;
+
+ @Override
+ public void visibilityChanged(IElement e, ILayer layer, boolean visible) {
+ if (!isAlive())
+ return;
+ if (DebugPolicy.DEBUG_LAYERS)
+ System.out.println("visibility changed: " + e + ", " + layer + ", " + visible);
+ GraphLayer gl = layerManager.getGraphLayer(layer.getName());
+ if (gl != null) {
+ changeTag(e, gl.getVisible(), visible);
+ }
+ }
+
+ @Override
+ public void focusabilityChanged(IElement e, ILayer layer, boolean focusable) {
+ if (!isAlive())
+ return;
+ if (DebugPolicy.DEBUG_LAYERS)
+ System.out.println("focusability changed: " + e + ", " + layer + ", " + focusable);
+ GraphLayer gl = layerManager.getGraphLayer(layer.getName());
+ if (gl != null) {
+ changeTag(e, gl.getFocusable(), focusable);
+ }
+ }
+
+ void changeTag(IElement e, Resource tag, boolean set) {
+ Object object = e.getHint(ElementHints.KEY_OBJECT);
+ Resource tagged = null;
+ if (object instanceof Resource) {
+ tagged = (Resource) object;
+ } else if (object instanceof EdgeResource) {
+ ConnectionEntity ce = e.getHint(ElementHints.KEY_CONNECTION_ENTITY);
+ if (ce instanceof ConnectionEntityImpl) {
+ tagged = ((ConnectionEntityImpl) ce).connection;
+ }
+ }
+ if (tagged == null)
+ return;
+
+ modificationQueue.async(new TagChange(tagged, tag, set), null);
+ }
+ };
+
+ ElementLayerListenerImpl elementLayerListener = new ElementLayerListenerImpl();
+
+ // ------------------------------------------------------------------------
+ // LAYERS END
+ // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+
+ @Override
+ public IDiagram loadDiagram(IProgressMonitor progressMonitor, ReadGraph g, final String modelURI, final Resource diagram, final Resource runtime, final ResourceArray structuralPath,
+ IHintObservable initialHints) throws DatabaseException {
+ if (DebugPolicy.DEBUG_LOAD)
+ System.out.println(Thread.currentThread() + " loadDiagram: " + NameUtils.getSafeName(g, diagram));
+
+ SubMonitor monitor = SubMonitor.convert(progressMonitor, "Load Diagram", 100);
+
+ Object loadTask = Timing.BEGIN("GDS.loadDiagram");
+ try {
+ try {
+ activateState(State.LOADING, false);
+ } catch (IllegalStateException e) {
+ // Disposed already before loading even began.
+ this.diagram = Diagram.spawnNew(DiagramClass.DEFAULT);
+ return this.diagram;
+ }
+ try {
+ // Query for diagram class
+ Resource diagramClassResource = g.getPossibleType(diagram, br.DIA.Composite);
+ if (diagramClassResource != null) {
+ // Spawn new diagram
+ Object task = Timing.BEGIN("GDS.DiagramClassRequest");
+ final DiagramClass diagramClass = g.syncRequest(new DiagramClassRequest(diagram));
+ Timing.END(task);
+ final IDiagram d = Diagram.spawnNew(diagramClass);
+ {
+ d.setHint(DiagramModelHints.KEY_DIAGRAM_RESOURCE, diagram);
+ if (runtime != null)
+ d.setHint(DiagramModelHints.KEY_DIAGRAM_RUNTIME_RESOURCE, runtime);
+ if (modelURI != null)
+ d.setHint(DiagramModelHints.KEY_DIAGRAM_MODEL_URI, modelURI);
+ d.setHint(DiagramModelHints.KEY_DIAGRAM_RESOURCE_ARRAY, structuralPath);
+
+ // Set dumb default routing when DiagramClass does not
+ // predefine the default connection routing for the diagram.
+ if (!d.containsHint(DiagramHints.ROUTE_ALGORITHM))
+ d.setHint(DiagramHints.ROUTE_ALGORITHM, RouterFactory.create(true, false));
+
+ d.setHint(SynchronizationHints.CONTEXT, this);
+
+ // Initialize hints with hints from initialHints if given
+ if (initialHints != null) {
+ d.setHints(initialHints.getHints());
+ }
+ }
+
+ // ITask task2 = ThreadLogger.getInstance().begin("loadLayers");
+ monitor.subTask("Layers");
+ {
+ this.layerManager = new GraphLayerManager(g, modificationQueue, diagram);
+ synchronizationContext.set(GraphSynchronizationHints.GRAPH_LAYER_MANAGER, this.layerManager);
+ ILayersEditor layers = layerManager.loadLayers(d, g, diagram);
+ // task2.finish();
+
+ d.setHint(DiagramHints.KEY_LAYERS, layers);
+ d.setHint(DiagramHints.KEY_LAYERS_EDITOR, layers);
+
+ d.addCompositionVetoListener(diagramListener);
+ d.addCompositionListener(diagramListener);
+
+ this.diagram = d;
+
+ d.setHint(DiagramHints.KEY_MUTATOR, new DefaultDiagramMutator(d, diagram, synchronizationContext));
+
+ // Add default layer if no layers exist.
+ // NOTE: this must be done after this.diagram has been set
+ // as it will trigger a graph modification which needs the
+ // diagram resource.
+ // ITask task3 = ThreadLogger.getInstance().begin("addDefaultLayer");
+// if (layers.getLayers().isEmpty()) {
+// if (DebugPolicy.DEBUG_LAYERS)
+// System.out.println("No layers, creating default layer '"
+// + DiagramConstants.DEFAULT_LAYER_NAME + "'");
+// SimpleLayer defaultLayer = new SimpleLayer(DiagramConstants.DEFAULT_LAYER_NAME);
+// layers.addLayer(defaultLayer);
+// layers.activate(defaultLayer);
+// }
+// // task3.finish();
+ }
+ monitor.worked(10);
+
+ monitor.subTask("Contents");
+ // Discover the plain resources that form the content of the
+ // diagram through a separate query. This allows us to
+ // separately
+ // track changes to the diagram structure itself, not the
+ // substructures contained by the structure elements.
+ ITask task4 = ThreadLogger.getInstance().begin("DiagramContentRequest1");
+ DiagramContentRequest query = new DiagramContentRequest(canvas, diagram, errorHandler);
+ g.syncRequest(query, new DiagramContentListener(diagram));
+ task4.finish();
+ // ITask task5 = ThreadLogger.getInstance().begin("DiagramContentRequest2");
+ ITask task42 = ThreadLogger.getInstance().begin("DiagramContentRequest2");
+ DiagramContents contents = g.syncRequest(query, TransientCacheAsyncListener.instance());
+ //System.err.println("contents: " + contents);
+ task42.finish();
+ // task5.finish();
+ monitor.worked(10);
+
+ monitor.subTask("Graphical elements");
+ {
+ Object applyDiagramContents = Timing.BEGIN("GDS.applyDiagramContents");
+ ITask task6 = ThreadLogger.getInstance().begin("applyDiagramContents");
+ processGraphUpdates(g, Collections.singleton(diagramGraphUpdater(contents)));
+ task6.finish();
+ Timing.END(applyDiagramContents);
+ }
+ monitor.worked(80);
+
+ DataNodeMap dn = new DataNodeMap() {
+ @Override
+ public INode getNode(Object data) {
+ if (DataNodeConstants.CANVAS_ROOT == data)
+ return canvas.getCanvasNode();
+ if (DataNodeConstants.DIAGRAM_ELEMENT_PARENT == data) {
+ ElementPainter ep = canvas.getAtMostOneItemOfClass(ElementPainter.class);
+ return ep != null ? ep.getDiagramElementParentNode() : null;
+ }
+
+ DataElementMap emap = GraphToDiagramSynchronizer.this.diagram.getDiagramClass().getSingleItem(DataElementMap.class);
+ IElement element = emap.getElement(GraphToDiagramSynchronizer.this.diagram, data);
+ if(element == null) return null;
+ return element.getHint(ElementHints.KEY_SG_NODE);
+ }
+ };
+
+ profileObserver = new ProfileObserver(g.getSession(), runtime,
+ canvas.getThreadAccess(), canvas, canvas.getSceneGraph(), diagram,
+ ArrayMap.keys(ProfileKeys.DIAGRAM, ProfileKeys.CANVAS, ProfileKeys.NODE_MAP).values(GraphToDiagramSynchronizer.this.diagram, canvas, dn),
+ new CanvasNotification(canvas));
+
+ g.getSession().asyncRequest(new AsyncReadRequest() {
+ @Override
+ public void run(AsyncReadGraph graph) {
+ ProfileObserver po = profileObserver;
+ if (po != null)
+ po.listen(graph, GraphToDiagramSynchronizer.this);
+ else
+ LOGGER.info("profileObserver has been disposed already!");
+ }
+ });
+
+ return d;
+
+ }
+
+ this.diagram = Diagram.spawnNew(DiagramClass.DEFAULT);
+ return this.diagram;
+
+ } finally {
+ idle();
+ }
+ } catch (InterruptedException e) {
+ throw new RuntimeException(e);
+ } catch (IllegalStateException e) {
+ // If the synchronizer was disposed ahead of time, it was done
+ // for a reason, such as the user having closed the owner editor.
+ if (!isAlive())
+ throw new CancelTransactionException(e);
+ throw new RuntimeException(e);
+ } finally {
+ Timing.END(loadTask);
+ }
+ }
+
+ static class CanvasNotification implements Runnable {
+
+ final private ICanvasContext canvas;
+
+ public CanvasNotification(ICanvasContext canvas) {
+ this.canvas = canvas;
+ }
+
+ public void run() {
+ canvas.getContentContext().setDirty();
+ }
+
+ }
+
+ ArrayList<IModification> pendingModifications = new ArrayList<IModification>();
+ MapSet<IElement, IModification> modificationIndex = new MapSet.Hash<IElement, IModification>();
+
+ void addModification(IElement element, IModification modification) {
+ pendingModifications.add(modification);
+ if (element != null)
+ modificationIndex.add(element, modification);
+
+ }
+ class DefaultDiagramMutator implements DiagramMutator {
+
+ Map<IElement, Resource> creation = new HashMap<IElement, Resource>();
+
+ IDiagram d;
+ Resource diagram;
+
+ IModifiableSynchronizationContext synchronizationContext;
+
+ public DefaultDiagramMutator(IDiagram d, Resource diagram, IModifiableSynchronizationContext synchronizationContext) {
+ this.d = d;
+ this.diagram = diagram;
+ this.synchronizationContext = synchronizationContext;
+
+ if (synchronizationContext.get(SynchronizationHints.ELEMENT_CLASS_PROVIDER) == null)
+ throw new IllegalArgumentException("SynchronizationHints.ELEMENT_CLASS_PROVIDER not available");
+ }
+
+ void assertNotDisposed() {
+ if (!isAlive())
+ throw new IllegalStateException(getClass().getSimpleName() + " is disposed");
+ }
+
+ @Override
+ public IElement newElement(ElementClass clazz) {
+ assertNotDisposed();
+ ElementFactory ef = d.getDiagramClass().getAtMostOneItemOfClass(ElementFactory.class);
+ IElement element = null;
+ if (ef != null)
+ element = ef.spawnNew(clazz);
+ else
+ element = Element.spawnNew(clazz);
+
+ element.setHint(ElementHints.KEY_OBJECT, new TransientElementObject());
+
+ addModification(element, new AddElement(synchronizationContext, d, element));
+
+ return element;
+ }
+
+ @Override
+ public void commit() {
+ assertNotDisposed();
+ if (DebugPolicy.DEBUG_MUTATOR_COMMIT) {
+ System.out.println("DiagramMutator is about to commit changes:");
+ for (IModification mod : pendingModifications)
+ System.out.println("\t- " + mod);
+ }
+
+ Collections.sort(pendingModifications);
+
+ if (DebugPolicy.DEBUG_MUTATOR_COMMIT) {
+ if (pendingModifications.size() > 1) {
+ System.out.println("* changes were re-ordered to:");
+ for (IModification mod : pendingModifications)
+ System.out.println("\t" + mod);
+ }
+ }
+
+ Timing.safeTimed(errorHandler, "QUEUE AND WAIT FOR MODIFICATIONS TO FINISH", new GTask() {
+ @Override
+ public void run() throws DatabaseException {
+ // Performs a separate write request and query result update
+ // for each modification
+// for (IModification mod : pendingModifications) {
+// try {
+// modificationQueue.sync(mod);
+// } catch (InterruptedException e) {
+// error("Pending diagram modification " + mod
+// + " was interrupted. See exception for details.", e);
+// }
+// }
+
+ // NOTE: this is still under testing, the author is not
+ // truly certain that it should work in all cases ATM.
+
+ // Performs all modifications with in a single write request
+ for (IModification mod : pendingModifications) {
+ modificationQueue.offer(mod, null);
+ }
+ try {
+ // Perform the modifications in a single request.
+ modificationQueue.finish();
+ } catch (InterruptedException e) {
+ errorHandler.error("Diagram modification finishing was interrupted. See exception for details.", e);
+ }
+ }
+ });
+ pendingModifications.clear();
+ modificationIndex.clear();
+ creation.clear();
+ if (DebugPolicy.DEBUG_MUTATOR_COMMIT)
+ System.out.println("DiagramMutator has committed");
+ }
+
+ @Override
+ public void clear() {
+ assertNotDisposed();
+ pendingModifications.clear();
+ modificationIndex.clear();
+ creation.clear();
+ if (DebugPolicy.DEBUG_MUTATOR)
+ System.out.println("DiagramMutator has been cleared");
+ }
+
+ @Override
+ public void modifyTransform(IElement element) {
+ assertNotDisposed();
+ Resource resource = backendObject(element);
+ AffineTransform tr = element.getHint(ElementHints.KEY_TRANSFORM);
+ if (resource != null && tr != null) {
+ addModification(element, new TransformElement(resource, tr));
+ }
+ }
+
+ @Override
+ public void synchronizeHintsToBackend(IElement element) {
+ assertNotDisposed();
+ IHintSynchronizer synchronizer = element.getHint(SynchronizationHints.HINT_SYNCHRONIZER);
+ if (synchronizer != null) {
+ CollectingModificationQueue queue = new CollectingModificationQueue();
+ synchronizer.synchronize(synchronizationContext, element);
+ addModification(element, new CompositeModification(ModificationAdapter.LOW_PRIORITY, queue.getQueue()));
+ }
+ }
+
+ @Override
+ public void synchronizeElementOrder() {
+ assertNotDisposed();
+ List<IElement> snapshot = d.getSnapshot();
+ addModification(null, new ElementReorder(d, snapshot));
+ }
+
+ @Override
+ public void register(IElement element, Object object) {
+ creation.put(element, (Resource) object);
+ }
+
+ @SuppressWarnings("unchecked")
+ @Override
+ public <T> T backendObject(IElement element) {
+ Object object = ElementUtils.getObject(element);
+ if (object instanceof Resource)
+ return (T) object;
+ else
+ return (T) creation.get(element);
+ }
+
+ }
+
+ // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ // GRAPH TO DIAGRAM SYCHRONIZATION LOGIC BEGIN
+ // ------------------------------------------------------------------------
+
+ static class ConnectionData {
+ ConnectionEntityImpl impl;
+ List<Resource> branchPoints = new ArrayList<Resource>();
+ List<EdgeResource> segments = new ArrayList<EdgeResource>();
+
+ ConnectionData(ConnectionEntityImpl ce) {
+ this.impl = ce;
+ }
+
+ void addBranchPoint(Resource bp) {
+ branchPoints.add(bp);
+ }
+
+ void addSegment(EdgeResource seg) {
+ segments.add(seg);
+ }
+ }
+
+ class GraphToDiagramUpdater {
+ DiagramContents lastContent;
+ DiagramContents content;
+ DiagramContentChanges changes;
+
+ final List<IElement> addedElements;
+ final List<IElement> removedElements;
+
+ final List<IElement> addedConnectionSegments;
+ final List<IElement> removedConnectionSegments;
+
+ final List<IElement> addedBranchPoints;
+ final List<IElement> removedBranchPoints;
+
+ final Map<Object, IElement> addedElementMap;
+ final Map<Resource, IElement> addedConnectionMap;
+ final Map<Resource, ConnectionEntityImpl> addedConnectionEntities;
+ final List<Resource> removedConnectionEntities;
+ final Map<ConnectionEntityImpl, ConnectionData> changedConnectionEntities;
+
+ final Map<Resource, IElement> addedRouteGraphConnectionMap;
+ final List<IElement> removedRouteGraphConnections;
+
+
+ GraphToDiagramUpdater(DiagramContents lastContent, DiagramContents content, DiagramContentChanges changes) {
+ this.lastContent = lastContent;
+ this.content = content;
+ this.changes = changes;
+
+ this.addedElements = new ArrayList<IElement>(changes.elements.size() + changes.branchPoints.size());
+ this.removedElements = new ArrayList<IElement>(changes.elements.size() + changes.branchPoints.size());
+ this.addedConnectionSegments = new ArrayList<IElement>(content.connectionSegments.size());
+ this.removedConnectionSegments = new ArrayList<IElement>(content.connectionSegments.size());
+ this.addedBranchPoints = new ArrayList<IElement>(content.branchPoints.size());
+ this.removedBranchPoints = new ArrayList<IElement>(content.branchPoints.size());
+ this.addedElementMap = new HashMap<Object, IElement>();
+ this.addedConnectionMap = new HashMap<Resource, IElement>();
+ this.addedConnectionEntities = new HashMap<Resource, ConnectionEntityImpl>();
+ this.removedConnectionEntities = new ArrayList<Resource>(changes.connections.size());
+ this.changedConnectionEntities = new HashMap<ConnectionEntityImpl, ConnectionData>();
+ this.addedRouteGraphConnectionMap = new HashMap<Resource, IElement>();
+ this.removedRouteGraphConnections = new ArrayList<IElement>(changes.routeGraphConnections.size());
+ }
+
+ public void clear() {
+ // Prevent DiagramContents leakage through DisposableListeners.
+ lastContent = null;
+ content = null;
+ changes = null;
+
+ this.addedElements.clear();
+ this.removedElements.clear();
+ this.addedConnectionSegments.clear();
+ this.removedConnectionSegments.clear();
+ this.addedBranchPoints.clear();
+ this.removedBranchPoints.clear();
+ this.addedElementMap.clear();
+ this.addedConnectionMap.clear();
+ this.addedConnectionEntities.clear();
+ this.removedConnectionEntities.clear();
+ this.changedConnectionEntities.clear();
+ this.addedRouteGraphConnectionMap.clear();
+ this.removedRouteGraphConnections.clear();
+ }
+
+ void processNodes(ReadGraph graph) throws DatabaseException {
+
+ for (Map.Entry<Resource, Change> entry : changes.elements.entrySet()) {
+
+ final Resource element = entry.getKey();
+ Change change = entry.getValue();
+
+ switch (change) {
+ case ADDED: {
+ IElement mappedElement = getMappedElement(element);
+ if (mappedElement == null) {
+ if (DebugPolicy.DEBUG_NODE_LOAD)
+ graph.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ System.out.println(" EXTERNALLY ADDED ELEMENT: "
+ + NameUtils.getSafeName(graph, element) + " ("
+ + element.getResourceId() + ")");
+ }
+ });
+
+ if (content.connectionSet.contains(element)) {
+
+ // TODO: Connection loading has no listening, changes :Connection will not be noticed by this code!
+ Listener<IElement> loadListener = new DisposableListener<IElement>(canvasListenerSupport) {
+
+ boolean firstTime = true;
+
+ @Override
+ public String toString() {
+ return "Connection load listener for " + element;
+ }
+ @Override
+ public void execute(IElement loaded) {
+ // Invoked when the element has been loaded.
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER)
+ System.out.println("CONNECTION LoadListener for " + loaded);
+
+ if (loaded == null) {
+ disposeListener();
+ return;
+ }
+
+ if (firstTime) {
+
+ mapElement(element, loaded);
+ synchronized (GraphToDiagramUpdater.this) {
+ addedElements.add(loaded);
+ addedElementMap.put(element, loaded);
+ addedConnectionMap.put(element, loaded);
+ }
+
+ firstTime = false;
+
+ }
+
+ Object data = loaded.getHint(ElementHints.KEY_OBJECT);
+
+ // Logic for disposing listener
+ if (!previousContent.connectionSet.contains(data)) {
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER)
+ System.out.println("CONNECTION LoadListener, connection not in current content: " + data + ". Disposing.");
+ disposeListener();
+ return;
+ }
+
+ if (addedElementMap.containsKey(data)) {
+ // This element was just loaded, in
+ // which case its hints need to
+ // uploaded to the real mapped
+ // element immediately.
+ IElement mappedElement = getMappedElement(data);
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER)
+ System.out.println("LOADED ADDED CONNECTION, currently mapped connection: " + mappedElement);
+ if (mappedElement != null && (mappedElement instanceof Element)) {
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER) {
+ System.out.println(" mapped hints: " + mappedElement.getHints());
+ System.out.println(" loaded hints: " + loaded.getHints());
+ }
+ updateMappedElement((Element) mappedElement, loaded);
+ }
+ } else {
+ // This element was already loaded.
+ // Just schedule an update some time
+ // in the future.
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER)
+ System.out.println("PREVIOUSLY LOADED CONNECTION UPDATED, scheduling update into the future");
+ offerGraphUpdate( connectionUpdater(element, loaded) );
+ }
+ }
+ };
+
+ graph.syncRequest(new ConnectionRequest(canvas, diagram, element, errorHandler, loadListener), new AsyncProcedure<IElement>() {
+ @Override
+ public void execute(AsyncReadGraph graph, final IElement e) {
+
+ // Read connection type
+ graph.forSingleType(element, br.DIA.Connection, new Procedure<Resource>() {
+ @Override
+ public void exception(Throwable t) {
+ error(t);
+ }
+
+ @Override
+ public void execute(Resource connectionType) {
+ synchronized (GraphToDiagramUpdater.this) {
+ //System.out.println("new connection entity " + e);
+ ConnectionEntityImpl entity = new ConnectionEntityImpl(element, connectionType, e);
+ e.setHint(ElementHints.KEY_CONNECTION_ENTITY, entity);
+ addedConnectionEntities.put(element, entity);
+ }
+ }
+ });
+
+ }
+
+ @Override
+ public void exception(AsyncReadGraph graph, Throwable throwable) {
+ error(throwable);
+ }
+ });
+ } else if (content.nodeSet.contains(element)) {
+
+ Listener<IElement> loadListener = new DisposableListener<IElement>(canvasListenerSupport) {
+
+ boolean firstTime = true;
+
+ @Override
+ public String toString() {
+ return "Node load listener for " + element;
+ }
+ @Override
+ public void execute(IElement loaded) {
+ // Invoked when the element has been loaded.
+ if (DebugPolicy.DEBUG_NODE_LISTENER)
+ System.out.println("NODE LoadListener for " + loaded);
+
+ if (loaded == null) {
+ disposeListener();
+ return;
+ }
+
+ if (firstTime) {
+
+ // This is invoked before the element is actually loaded.
+ //System.out.println("NodeRequestProcedure " + e);
+ if (DebugPolicy.DEBUG_NODE_LOAD)
+ System.out.println("MAPPING ADDED NODE: " + element + " -> " + loaded);
+ mapElement(element, loaded);
+ synchronized (GraphToDiagramUpdater.this) {
+ addedElements.add(loaded);
+ addedElementMap.put(element, loaded);
+ }
+
+ firstTime = false;
+
+ }
+
+ Object data = loaded.getHint(ElementHints.KEY_OBJECT);
+
+ // Logic for disposing listener
+ if (!previousContent.nodeSet.contains(data)) {
+ if (DebugPolicy.DEBUG_NODE_LISTENER)
+ System.out.println("NODE LoadListener, node not in current content: " + data + ". Disposing.");
+ disposeListener();
+ return;
+ }
+
+ if (addedElementMap.containsKey(data)) {
+ // This element was just loaded, in
+ // which case its hints need to
+ // uploaded to the real mapped
+ // element immediately.
+ IElement mappedElement = getMappedElement(data);
+ if (DebugPolicy.DEBUG_NODE_LISTENER)
+ System.out.println("LOADED ADDED ELEMENT, currently mapped element: " + mappedElement);
+ if (mappedElement != null && (mappedElement instanceof Element)) {
+ if (DebugPolicy.DEBUG_NODE_LISTENER) {
+ System.out.println(" mapped hints: " + mappedElement.getHints());
+ System.out.println(" loaded hints: " + loaded.getHints());
+ }
+ updateMappedElement((Element) mappedElement, loaded);
+ }
+ } else {
+ // This element was already loaded.
+ // Just schedule an update some time
+ // in the future.
+ if (DebugPolicy.DEBUG_NODE_LISTENER)
+ System.out.println("PREVIOUSLY LOADED NODE UPDATED, scheduling update into the future");
+ offerGraphUpdate( nodeUpdater(element, loaded) );
+ }
+ }
+ };
+
+ //System.out.println("NODE REQUEST: " + element);
+ graph.syncRequest(new NodeRequest(canvas, diagram, element, loadListener), new AsyncProcedure<IElement>() {
+ @Override
+ public void execute(AsyncReadGraph graph, IElement e) {
+ }
+
+ @Override
+ public void exception(AsyncReadGraph graph, Throwable throwable) {
+ error(throwable);
+ }
+ });
+
+ } else {
+// warning("Diagram elements must be either elements or connections, "
+// + NameUtils.getSafeName(g, element) + " is neither",
+// new AssumptionException(""));
+ }
+ }
+ break;
+ }
+ case REMOVED: {
+ IElement e = getMappedElement(element);
+ if (DebugPolicy.DEBUG_NODE_LOAD)
+ graph.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ System.out.println(" EXTERNALLY REMOVED ELEMENT: "
+ + NameUtils.getSafeName(graph, element) + " ("
+ + element.getResourceId() + ")");
+ }
+ });
+ if (e != null) {
+ removedElements.add(e);
+ }
+ break;
+ }
+ default:
+ }
+ }
+ }
+
+ void gatherChangedConnectionParts(Map<?, Change> changes) {
+ for (Map.Entry<?, Change> entry : changes.entrySet()) {
+ Object part = entry.getKey();
+ Change change = entry.getValue();
+
+ switch (change) {
+ case ADDED: {
+ synchronized (GraphToDiagramUpdater.this) {
+ Resource connection = content.partToConnection.get(part);
+ assert connection != null;
+
+ IElement ce = getMappedElement(connection);
+ if (ce == null)
+ ce = addedElementMap.get(connection);
+
+ if (ce != null)
+ markConnectionChanged(ce);
+ break;
+ }
+ }
+ case REMOVED: {
+ if (lastContent == null)
+ break;
+ Resource connection = lastContent.partToConnection.get(part);
+ if (connection != null && content.connectionSet.contains(connection)) {
+ markConnectionChanged(connection);
+ }
+ break;
+ }
+ default:
+ }
+ }
+ }
+
+ void markConnectionChanged(Resource connection) {
+// System.out.println("markConnectionChanged");
+ ConnectionEntityImpl ce = getMappedConnection(connection);
+ if (ce != null) {
+ markConnectionChanged(ce);
+ return;
+ }
+ error("WARNING: marking connection entity " + connection
+ + " changed, but the connection was not previously mapped",
+ new Exception("created exception to get a stack trace"));
+ }
+
+ void markConnectionChanged(IElement connection) {
+ ConnectionEntityImpl entity = connection.getHint(ElementHints.KEY_CONNECTION_ENTITY);
+ if (entity != null)
+ markConnectionChanged(entity);
+ }
+
+ void markConnectionChanged(ConnectionEntityImpl ce) {
+ if (!changedConnectionEntities.containsKey(ce)) {
+ changedConnectionEntities.put(ce, new ConnectionData(ce));
+ }
+ }
+
+ void processConnections() {
+ // Find added/removed connection segments/branch points
+ // in order to find all changed connection entities.
+ gatherChangedConnectionParts(changes.connectionSegments);
+ gatherChangedConnectionParts(changes.branchPoints);
+
+ // Find removed connection entities
+ for (Map.Entry<Resource, Change> entry : changes.connections.entrySet()) {
+ Resource ce = entry.getKey();
+ Change change = entry.getValue();
+
+ switch (change) {
+ case REMOVED: {
+ removedConnectionEntities.add(ce);
+ }
+ default:
+ }
+ }
+
+ // Generate update data of changed connection entities.
+ // This ConnectionData will be applied in the canvas thread
+ // diagram updater.
+ for (ConnectionData cd : changedConnectionEntities.values()) {
+ for (Object part : content.connectionToParts.getValuesUnsafe(cd.impl.connection)) {
+ if (part instanceof Resource) {
+ cd.branchPoints.add((Resource) part);
+ } else if (part instanceof EdgeResource) {
+ cd.segments.add((EdgeResource) part);
+ }
+ }
+ }
+ }
+
+ void processRouteGraphConnections(ReadGraph graph) throws DatabaseException {
+ for (Map.Entry<Resource, Change> entry : changes.routeGraphConnections.entrySet()) {
+ final Resource connection = entry.getKey();
+
+ Change change = entry.getValue();
+ switch (change) {
+ case ADDED: {
+ IElement mappedElement = getMappedElement(connection);
+ if (mappedElement != null)
+ continue;
+
+ Listener<IElement> loadListener = new DisposableListener<IElement>(canvasListenerSupport) {
+
+ boolean firstTime = true;
+
+ @Override
+ public String toString() {
+ return "processRouteGraphConnections " + connection;
+ }
+ @Override
+ public void execute(IElement loaded) {
+ // Invoked when the element has been loaded.
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER)
+ System.out.println("ROUTE GRAPH CONNECTION LoadListener for " + loaded);
+
+ if (loaded == null) {
+ disposeListener();
+ return;
+ }
+
+ if(firstTime) {
+ if (DebugPolicy.DEBUG_NODE_LOAD)
+ System.out.println("MAPPING ADDED ROUTE GRAPH CONNECTION: " + connection + " -> " + loaded);
+ mapElement(connection, loaded);
+ synchronized (GraphToDiagramUpdater.this) {
+ addedElements.add(loaded);
+ addedElementMap.put(connection, loaded);
+ addedRouteGraphConnectionMap.put(connection, loaded);
+ }
+ firstTime = false;
+ }
+
+ Object data = loaded.getHint(ElementHints.KEY_OBJECT);
+
+ // Logic for disposing listener
+ if (!previousContent.routeGraphConnectionSet.contains(data)) {
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER)
+ System.out.println("ROUTE GRAPH CONNECTION LoadListener, connection not in current content: " + data + ". Disposing.");
+ disposeListener();
+ return;
+ }
+
+ if (addedElementMap.containsKey(data)) {
+ // This element was just loaded, in
+ // which case its hints need to
+ // uploaded to the real mapped
+ // element immediately.
+ IElement mappedElement = getMappedElement(data);
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER)
+ System.out.println("LOADED ADDED ROUTE GRAPH CONNECTION, currently mapped connection: " + mappedElement);
+ if (mappedElement instanceof Element) {
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER) {
+ System.out.println(" mapped hints: " + mappedElement.getHints());
+ System.out.println(" loaded hints: " + loaded.getHints());
+ }
+ updateMappedElement((Element) mappedElement, loaded);
+ }
+ } else {
+ // This element was already loaded.
+ // Just schedule an update some time
+ // in the future.
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER)
+ System.out.println("PREVIOUSLY LOADED ROUTE GRAPH CONNECTION UPDATED, scheduling update into the future: " + connection);
+
+ Set<Object> dirtyNodes = new THashSet<Object>(4);
+ IElement mappedElement = getMappedElement(connection);
+ ConnectionEntity ce = mappedElement.getHint(ElementHints.KEY_CONNECTION_ENTITY);
+ if (ce != null) {
+ for (Connection conn : ce.getTerminalConnections(null)) {
+ Object o = conn.node.getHint(ElementHints.KEY_OBJECT);
+ if (o != null) {
+ dirtyNodes.add(o);
+ if (DebugPolicy.DEBUG_CONNECTION_LISTENER)
+ System.out.println("Marked connectivity dirty for node: " + conn.node);
+ }
+ }
+ }
+
+ offerGraphUpdate( routeGraphConnectionUpdater(connection, loaded, dirtyNodes) );
+ }
+ }
+ };
+
+ graph.syncRequest(new ConnectionRequest(canvas, diagram, connection, errorHandler, loadListener), new Procedure<IElement>() {
+ @Override
+ public void execute(final IElement e) {
+ }
+ @Override
+ public void exception(Throwable throwable) {
+ error(throwable);
+ }
+ });
+ break;
+ }
+ case REMOVED: {
+ IElement e = getMappedElement(connection);
+ if (e != null)
+ removedRouteGraphConnections.add(e);
+ break;
+ }
+ default:
+ }
+ }
+ }
+
+ ConnectionEntityImpl getConnectionEntity(Object connectionPart) {
+ Resource connection = content.partToConnection.get(connectionPart);
+ assert connection != null;
+ ConnectionEntityImpl ce = addedConnectionEntities.get(connection);
+ if (ce != null)
+ return ce;
+ return assertMappedConnection(connection);
+ }
+
+ void processBranchPoints(ReadGraph graph) throws DatabaseException {
+ for (Map.Entry<Resource, Change> entry : changes.branchPoints.entrySet()) {
+
+ final Resource element = entry.getKey();
+ Change change = entry.getValue();
+
+ switch (change) {
+ case ADDED: {
+ IElement mappedElement = getMappedElement(element);
+ if (mappedElement == null) {
+ if (DebugPolicy.DEBUG_NODE_LOAD)
+ graph.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ System.out.println(" EXTERNALLY ADDED BRANCH POINT: "
+ + NameUtils.getSafeName(graph, element) + " ("
+ + element.getResourceId() + ")");
+ }
+ });
+
+ Listener<IElement> loadListener = new DisposableListener<IElement>(canvasListenerSupport) {
+
+ boolean firstTime = true;
+
+ @Override
+ public String toString() {
+ return "processBranchPoints for " + element;
+ }
+ @Override
+ public void execute(IElement loaded) {
+ // Invoked when the element has been loaded.
+ if (DebugPolicy.DEBUG_NODE_LISTENER)
+ System.out.println("BRANCH POINT LoadListener for " + loaded);
+
+ if (loaded == null) {
+ disposeListener();
+ return;
+ }
+
+ if (firstTime) {
+
+ mapElement(element, loaded);
+ synchronized (GraphToDiagramUpdater.this) {
+ addedBranchPoints.add(loaded);
+ addedElementMap.put(element, loaded);
+ ConnectionEntityImpl ce = getConnectionEntity(element);
+ loaded.setHint(ElementHints.KEY_CONNECTION_ENTITY, ce);
+ loaded.setHint(ElementHints.KEY_PARENT_ELEMENT, ce.getConnectionElement());
+ }
+
+ firstTime = false;
+
+ }
+
+ Object data = loaded.getHint(ElementHints.KEY_OBJECT);
+ if (addedElementMap.containsKey(data)) {
+ // This element was just loaded, in
+ // which case its hints need to
+ // uploaded to the real mapped
+ // element immediately.
+ IElement mappedElement = getMappedElement(data);
+ if (DebugPolicy.DEBUG_NODE_LISTENER)
+ System.out.println("LOADED ADDED BRANCH POINT, currently mapped element: " + mappedElement);
+ if (mappedElement != null && (mappedElement instanceof Element)) {
+ if (DebugPolicy.DEBUG_NODE_LISTENER) {
+ System.out.println(" mapped hints: " + mappedElement.getHints());
+ System.out.println(" loaded hints: " + loaded.getHints());
+ }
+ updateMappedElement((Element) mappedElement, loaded);
+ }
+ } else {
+ // This element was already loaded.
+ // Just schedule an update some time
+ // in the future.
+ if (DebugPolicy.DEBUG_NODE_LISTENER)
+ System.out.println("PREVIOUSLY LOADED BRANCH POINT UPDATED, scheduling update into the future");
+ offerGraphUpdate( nodeUpdater(element, loaded) );
+ }
+ }
+ };
+
+ graph.syncRequest(new NodeRequest(canvas, diagram, element, loadListener), new AsyncProcedure<IElement>() {
+ @Override
+ public void execute(AsyncReadGraph graph, IElement e) {
+ }
+
+ @Override
+ public void exception(AsyncReadGraph graph, Throwable throwable) {
+ error(throwable);
+ }
+ });
+ }
+ break;
+ }
+ case REMOVED: {
+ IElement e = getMappedElement(element);
+ if (DebugPolicy.DEBUG_NODE_LOAD)
+ graph.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ System.out.println(" EXTERNALLY REMOVED BRANCH POINT: "
+ + NameUtils.getSafeName(graph, element) + " ("
+ + element.getResourceId() + ")");
+ }
+ });
+ if (e != null) {
+ removedBranchPoints.add(e);
+ }
+ break;
+ }
+ default:
+ }
+ }
+ }
+
+ void processConnectionSegments(ReadGraph graph) throws DatabaseException {
+ ConnectionSegmentAdapter adapter = connectionSegmentAdapter;
+
+ for (Map.Entry<EdgeResource, Change> entry : changes.connectionSegments.entrySet()) {
+ final EdgeResource seg = entry.getKey();
+ Change change = entry.getValue();
+
+ switch (change) {
+ case ADDED: {
+ IElement mappedElement = getMappedElement(seg);
+ if (mappedElement == null) {
+ if (DebugPolicy.DEBUG_EDGE_LOAD)
+ graph.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ System.out.println(" EXTERNALLY ADDED CONNECTION SEGMENT: " + seg.toString()
+ + " - " + seg.toString(graph));
+ }
+ });
+
+ graph.syncRequest(new EdgeRequest(canvas, errorHandler, canvasListenerSupport, diagram, adapter, seg), new AsyncProcedure<IElement>() {
+ @Override
+ public void execute(AsyncReadGraph graph, IElement e) {
+ if (DebugPolicy.DEBUG_EDGE_LOAD)
+ System.out.println("ADDED EDGE LOADED: " + e);
+ if (e != null) {
+ mapElement(seg, e);
+ synchronized (GraphToDiagramUpdater.this) {
+ addedConnectionSegments.add(e);
+ addedElementMap.put(seg, e);
+ ConnectionEntityImpl ce = getConnectionEntity(seg);
+ e.setHint(ElementHints.KEY_CONNECTION_ENTITY, ce);
+ e.setHint(ElementHints.KEY_PARENT_ELEMENT, ce.getConnectionElement());
+ }
+ }
+ }
+
+ @Override
+ public void exception(AsyncReadGraph graph, Throwable throwable) {
+ error(throwable);
+ }
+ });
+ }
+ break;
+ }
+ case REMOVED: {
+ final IElement e = getMappedElement(seg);
+ if (DebugPolicy.DEBUG_EDGE_LOAD)
+ graph.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ System.out.println(" EXTERNALLY REMOVED CONNECTION SEGMENT: " + seg.toString() + " - "
+ + seg.toString(graph) + " -> " + e);
+ }
+ });
+ if (e != null) {
+ removedConnectionSegments.add(e);
+ }
+ break;
+ }
+ default:
+ }
+ }
+ }
+
+ void executeDeferredLoaders(ReadGraph graph) throws DatabaseException {
+ // The rest of the diagram loading passes
+ Deque<IElement> q1 = new ArrayDeque<IElement>();
+ Deque<IElement> q2 = new ArrayDeque<IElement>();
+ collectElementLoaders(q1, addedElements);
+ while (!q1.isEmpty()) {
+ //System.out.println("DEFFERED LOADERS: " + q1);
+ for (IElement e : q1) {
+ ElementLoader loader = e.removeHint(DiagramModelHints.KEY_ELEMENT_LOADER);
+ //System.out.println("EXECUTING DEFFERED LOADER: " + loader);
+ loader.load(graph, diagram, e);
+ }
+
+ collectElementLoaders(q2, q1);
+ Deque<IElement> qt = q1;
+ q1 = q2;
+ q2 = qt;
+ q2.clear();
+ }
+ }
+
+ private void collectElementLoaders(Queue<IElement> queue, Collection<IElement> cs) {
+ for (IElement e : cs) {
+ ElementLoader loader = e.getHint(DiagramModelHints.KEY_ELEMENT_LOADER);
+ if (loader != null)
+ queue.add(e);
+ }
+ }
+
+ public void process(ReadGraph graph) throws DatabaseException {
+ // No changes? Do nothing.
+ if (changes.isEmpty())
+ return;
+
+ // NOTE: This order is important.
+ Object task = Timing.BEGIN("processNodesConnections");
+ //System.out.println("---- PROCESS NODES & CONNECTIONS BEGIN");
+ if (!changes.elements.isEmpty()) {
+ graph.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ processNodes(graph);
+ }
+ @Override
+ public String toString() {
+ return "processNodes";
+ }
+ });
+ }
+ //System.out.println("---- PROCESS NODES & CONNECTIONS END");
+
+ processConnections();
+
+ //System.out.println("---- PROCESS BRANCH POINTS BEGIN");
+ if (!changes.branchPoints.isEmpty()) {
+ graph.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ processBranchPoints(graph);
+ }
+ @Override
+ public String toString() {
+ return "processBranchPoints";
+ }
+ });
+ }
+ //System.out.println("---- PROCESS BRANCH POINTS END");
+
+ Timing.END(task);
+ task = Timing.BEGIN("processConnectionSegments");
+
+ //System.out.println("---- PROCESS CONNECTION SEGMENTS BEGIN");
+ if (!changes.connectionSegments.isEmpty()) {
+ graph.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ processConnectionSegments(graph);
+ }
+ @Override
+ public String toString() {
+ return "processConnectionSegments";
+ }
+ });
+ }
+ //System.out.println("---- PROCESS CONNECTION SEGMENTS END");
+
+ Timing.END(task);
+
+ task = Timing.BEGIN("processRouteGraphConnections");
+ if (!changes.routeGraphConnections.isEmpty()) {
+ graph.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph graph) throws DatabaseException {
+ processRouteGraphConnections(graph);
+ }
+ @Override
+ public String toString() {
+ return "processRouteGraphConnections";
+ }
+ });
+ }
+ Timing.END(task);
+
+ //System.out.println("---- AFTER LOADING");
+ //for (IElement e : addedElements)
+ // System.out.println(" ADDED ELEMENT: " + e);
+ //for (IElement e : addedBranchPoints)
+ // System.out.println(" ADDED BRANCH POINTS: " + e);
+
+ task = Timing.BEGIN("executeDeferredLoaders");
+ executeDeferredLoaders(graph);
+ Timing.END(task);
+ }
+
+ public boolean isEmpty() {
+ return addedElements.isEmpty() && removedElements.isEmpty()
+ && addedConnectionSegments.isEmpty() && removedConnectionSegments.isEmpty()
+ && addedBranchPoints.isEmpty() && removedBranchPoints.isEmpty()
+ && addedConnectionEntities.isEmpty() && removedConnectionEntities.isEmpty()
+ && addedRouteGraphConnectionMap.isEmpty() && removedRouteGraphConnections.isEmpty()
+ && !changes.elementOrderChanged;
+ }
+
+ class DefaultConnectionSegmentAdapter implements ConnectionSegmentAdapter {
+
+ @Override
+ public void getClass(AsyncReadGraph graph, EdgeResource edge, ConnectionInfo info, ListenerSupport listenerSupport, ICanvasContext canvas, IDiagram diagram, final AsyncProcedure<ElementClass> procedure) {
+ if (info.connectionType != null) {
+ NodeClassRequest request = new NodeClassRequest(canvas, diagram, info.connectionType, true);
+ graph.asyncRequest(request, new CacheListener<ElementClass>(listenerSupport));
+ graph.asyncRequest(request, procedure);
+ } else {
+ procedure.execute(graph, null);
+ }
+ }
+
+ @Override
+ public void load(AsyncReadGraph graph, final EdgeResource edge, final ConnectionInfo info, ListenerSupport listenerSupport, ICanvasContext canvas, final IDiagram diagram, final IElement element) {
+ graph.asyncRequest(new Read<IElement>() {
+ @Override
+ public IElement perform(ReadGraph graph) throws DatabaseException {
+ //ITask task = ThreadLogger.getInstance().begin("LoadSegment");
+ syncLoad(graph, edge, info, diagram, element);
+ //task.finish();
+ return element;
+ }
+ @Override
+ public String toString() {
+ return "defaultConnectionSegmentAdapter";
+ }
+ }, new DisposableListener<IElement>(listenerSupport) {
+
+ @Override
+ public String toString() {
+ return "DefaultConnectionSegmentAdapter listener for " + edge;
+ }
+
+ @Override
+ public void execute(IElement loaded) {
+ // Invoked when the element has been loaded.
+ if (DebugPolicy.DEBUG_EDGE_LISTENER)
+ System.out.println("EDGE LoadListener for " + loaded);
+
+ if (loaded == null) {
+ disposeListener();
+ return;
+ }
+
+ Object data = loaded.getHint(ElementHints.KEY_OBJECT);
+ if (addedElementMap.containsKey(data)) {
+ // This element was just loaded, in
+ // which case its hints need to
+ // uploaded to the real mapped
+ // element immediately.
+ IElement mappedElement = getMappedElement(data);
+ if (DebugPolicy.DEBUG_EDGE_LISTENER)
+ System.out.println("LOADED ADDED EDGE, currently mapped element: " + mappedElement);
+ if (mappedElement != null && (mappedElement instanceof Element)) {
+ if (DebugPolicy.DEBUG_EDGE_LISTENER) {
+ System.out.println(" mapped hints: " + mappedElement.getHints());
+ System.out.println(" loaded hints: " + loaded.getHints());
+ }
+ updateMappedElement((Element) mappedElement, loaded);
+ }
+ } else {
+ // This element was already loaded.
+ // Just schedule an update some time
+ // in the future.
+ if (DebugPolicy.DEBUG_EDGE_LISTENER)
+ System.out.println("PREVIOUSLY LOADED EDGE UPDATED, scheduling update into the future");
+ offerGraphUpdate( edgeUpdater(element, loaded) );
+ }
+ }
+ });
+ }
+
+ void syncLoad(ReadGraph graph, EdgeResource connectionSegment, ConnectionInfo info, IDiagram diagram, IElement element) throws DatabaseException {
+ // Check that at least some data exists before continuing further.
+ if (!graph.hasStatement(connectionSegment.first()) && !graph.hasStatement(connectionSegment.second())) {
+ return;
+ }
+
+ // Validate that both ends of the segment are
+ // part of the same connection before loading.
+ // This will happen for connections that are
+ // modified through splitting and joining of
+ // connection segments.
+ Resource c = ConnectionUtil.tryGetConnection(graph, connectionSegment);
+ if (c == null) {
+ // Ok, this segment is somehow invalid. Just don't load it.
+ if (DebugPolicy.DEBUG_CONNECTION_LOAD)
+ System.out.println("Skipping edge " + connectionSegment + ". Both segment ends are not part of the same connection.");
+ return;
+ }
+
+ if (!info.isValid()) {
+ // This edge must be somehow invalid, don't proceed with loading.
+ if (DebugPolicy.DEBUG_CONNECTION_LOAD)
+ warning("Cannot load edge " + connectionSegment + ". ConnectionInfo " + info + " is invalid.", new DebugException("execution trace"));
+ return;
+ }
+
+ Element edge = (Element) element;
+ edge.setHint(ElementHints.KEY_OBJECT, connectionSegment);
+
+ // connectionSegment resources may currently be in a different
+ // order than ConnectionInfo.firstEnd/secondEnd. Therefore the
+ // segment ends must be resolved here.
+ ConnectionSegmentEnd firstEnd = DiagramGraphUtil.resolveConnectionSegmentEnd(graph, connectionSegment.first());
+ ConnectionSegmentEnd secondEnd = DiagramGraphUtil.resolveConnectionSegmentEnd(graph, connectionSegment.second());
+ if (firstEnd == null || secondEnd == null) {
+ if (DebugPolicy.DEBUG_CONNECTION_LOAD)
+ warning("End attachments for edge " + connectionSegment + " are unresolved: (" + firstEnd + "," + secondEnd + ")", new DebugException("execution trace"));
+ return;
+ }
+
+ if (DebugPolicy.DEBUG_CONNECTION_LOAD)
+ System.out.println("CONNECTION INFO: " + connectionSegment + " - " + info);
+ DesignatedTerminal firstTerminal = DiagramGraphUtil.findDesignatedTerminal(
+ graph, diagram, connectionSegment.first(), firstEnd);
+ DesignatedTerminal secondTerminal = DiagramGraphUtil.findDesignatedTerminal(
+ graph, diagram, connectionSegment.second(), secondEnd);
+
+ // Edges must be connected at both ends in order for edge loading to succeed.
+ String err = validateConnectivity(graph, connectionSegment, firstTerminal, secondTerminal);
+ if (err != null) {
+ // Stop loading edge if the connectivity cannot be completely resolved.
+ if (DebugPolicy.DEBUG_CONNECTION_LOAD)
+ warning(err, null);
+ return;
+ }
+
+ graph.syncRequest(new AsyncReadRequest() {
+ @Override
+ public void run(AsyncReadGraph graph) {
+ // NOTICE: Layer information is loaded from the connection entity resource
+ // that is shared by all segments of the same connection.
+ ElementFactoryUtil.loadLayersForElement(graph, layerManager, diagram, edge, info.connection,
+ new AsyncProcedureAdapter<IElement>() {
+ @Override
+ public void exception(AsyncReadGraph graph, Throwable t) {
+ error("failed to load layers for connection segment", t);
+ }
+ });
+ }
+ });
+
+ edge.setHintWithoutNotification(KEY_CONNECTION_BEGIN_PLACEHOLDER, new PlaceholderConnection(
+ EdgeEnd.Begin,
+ firstTerminal.element.getHint(ElementHints.KEY_OBJECT),
+ firstTerminal.terminal));
+ edge.setHintWithoutNotification(KEY_CONNECTION_END_PLACEHOLDER, new PlaceholderConnection(
+ EdgeEnd.End,
+ secondTerminal.element.getHint(ElementHints.KEY_OBJECT),
+ secondTerminal.terminal));
+
+ IModelingRules modelingRules = diagram.getHint(DiagramModelHints.KEY_MODELING_RULES);
+ if (modelingRules != null) {
+ ConnectionVisualsLoader loader = diagram.getHint(DiagramModelHints.KEY_CONNECTION_VISUALS_LOADER);
+ if (loader != null)
+ loader.loadConnectionVisuals(graph, modelingRules, info.connection, diagram, edge, firstTerminal, secondTerminal);
+ else
+ DiagramGraphUtil.loadConnectionVisuals(graph, modelingRules, info.connection, diagram, edge, firstTerminal, secondTerminal);
+ }
+ }
+
+ private String validateConnectivity(ReadGraph graph, EdgeResource edge,
+ DesignatedTerminal firstTerminal,
+ DesignatedTerminal secondTerminal)
+ throws DatabaseException {
+ boolean firstLoose = firstTerminal == null;
+ boolean secondLoose = secondTerminal == null;
+ boolean stray = firstLoose && secondLoose;
+ if (firstTerminal == null || secondTerminal == null) {
+ StringBuilder sb = new StringBuilder();
+ sb.append("encountered ");
+ sb.append(stray ? "stray" : "loose");
+ sb.append(" connection segment, ");
+ if (firstLoose)
+ sb.append("first ");
+ if (stray)
+ sb.append("and ");
+ if (secondLoose)
+ sb.append("second ");
+ sb.append("end disconnected: ");
+ sb.append(edge.toString(graph));
+ sb.append(" - ");
+ sb.append(edge.toString());
+ return sb.toString();
+ }
+ return null;
+ }
+
+ }
+
+ ConnectionSegmentAdapter connectionSegmentAdapter = new DefaultConnectionSegmentAdapter();
+
+ }
+
+ private static final Double DIAGRAM_UPDATE_DIAGRAM_PRIORITY = 1d;
+ private static final Double DIAGRAM_UPDATE_NODE_PRIORITY = 2d;
+ private static final Double DIAGRAM_UPDATE_CONNECTION_PRIORITY = 3d;
+ private static final Double DIAGRAM_UPDATE_EDGE_PRIORITY = 4d;
+
+ interface DiagramUpdater extends Runnable {
+ Double getPriority();
+
+ Comparator<DiagramUpdater> DIAGRAM_UPDATER_COMPARATOR = new Comparator<DiagramUpdater>() {
+ @Override
+ public int compare(DiagramUpdater o1, DiagramUpdater o2) {
+ return o1.getPriority().compareTo(o2.getPriority());
+ }
+ };
+ }
+
+ interface GraphUpdateReactor {
+ DiagramUpdater graphUpdate(ReadGraph graph) throws DatabaseException;
+ }
+
+ static abstract class AbstractDiagramUpdater implements DiagramUpdater, GraphUpdateReactor {
+ protected final Double priority;
+ protected final String runnerName;
+
+ public AbstractDiagramUpdater(Double priority, String runnerName) {
+ if (priority == null)
+ throw new NullPointerException("null priority");
+ if (runnerName == null)
+ throw new NullPointerException("null runner name");
+ this.priority = priority;
+ this.runnerName = runnerName;
+ }
+
+ @Override
+ public Double getPriority() {
+ return priority;
+ }
+
+ @Override
+ public AbstractDiagramUpdater graphUpdate(ReadGraph graph) {
+ return this;
+ }
+
+ @Override
+ public void run() {
+ Object task = Timing.BEGIN(runnerName);
+ forDiagram();
+ Timing.END(task);
+ }
+
+ protected void forDiagram() {
+ }
+
+ @Override
+ public String toString() {
+ return runnerName + "@" + System.identityHashCode(this) + " [" + priority + "]";
+ }
+ }
+
+ /**
+ * @param content the new contents of the diagram, must not be
+ * <code>null</code>.
+ */
+ private GraphUpdateReactor diagramGraphUpdater(final DiagramContents content) {
+ if (content == null)
+ throw new NullPointerException("null diagram content");
+
+ return new GraphUpdateReactor() {
+ @Override
+ public String toString() {
+ return "DiagramGraphUpdater@" + System.identityHashCode(this);
+ }
+
+ @Override
+ public DiagramUpdater graphUpdate(ReadGraph graph) throws DatabaseException {
+ // Never do anything here if the canvas has already been disposed.
+ if (!GraphToDiagramSynchronizer.this.isAlive())
+ return null;
+
+ // We must be prepared for the following changes in the diagram graph
+ // model:
+ // - the diagram has been completely removed
+ // - elements have been added
+ // - elements have been removed
+ //
+ // Element-specific changes are handled by the element query listeners:
+ // - elements have been modified
+ // - element position has changed
+ // - element class (e.g. image) has changed
+
+ diagramUpdateLock.lock();
+ try {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)
+ System.out.println("In diagramGraphUpdater:");
+
+ // Find out what has changed since the last query.
+ Object task = Timing.BEGIN("diagramContentDifference");
+ DiagramContents lastContent = previousContent;
+ DiagramContentChanges changes = content.differenceFrom(previousContent);
+ previousContent = content;
+ Timing.END(task);
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)
+ System.out.println(" changes: " + changes);
+
+ // Bail out if there are no changes to react to.
+ if (changes.isEmpty())
+ return null;
+
+ // Load everything that needs to be loaded from the graph,
+ // but don't update the UI model in this thread yet.
+ task = Timing.BEGIN("updater.process");
+ GraphToDiagramUpdater updater = new GraphToDiagramUpdater(lastContent, content, changes);
+ GraphToDiagramSynchronizer.this.currentUpdater = updater;
+ try {
+ updater.process(graph);
+ } finally {
+ GraphToDiagramSynchronizer.this.currentUpdater = null;
+ }
+ Timing.END(task);
+
+ if (updater.isEmpty())
+ return null;
+
+ // Return an updater that will update the UI run-time model.
+ return diagramUpdater(updater);
+ } finally {
+ diagramUpdateLock.unlock();
+ }
+ }
+ };
+ }
+
+ DiagramUpdater diagramUpdater(final GraphToDiagramUpdater updater) {
+ return new AbstractDiagramUpdater(DIAGRAM_UPDATE_DIAGRAM_PRIORITY, "updateDiagram") {
+ @Override
+ protected void forDiagram() {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)
+ System.out.println("running diagram updater: " + this);
+
+ // DiagramUtils.testDiagram(diagram);
+ Set<IElement> dirty = new HashSet<IElement>();
+
+ Object task2 = Timing.BEGIN("Preprocess connection changes");
+ Map<ConnectionEntity, ConnectionChildren> connectionChangeData = new HashMap<ConnectionEntity, ConnectionChildren>(updater.changedConnectionEntities.size());
+ for (ConnectionData cd : updater.changedConnectionEntities.values()) {
+ connectionChangeData.put(cd.impl, cd.impl.getConnectionChildren());
+ }
+ Timing.END(task2);
+
+ task2 = Timing.BEGIN("removeRouteGraphConnections");
+ for (IElement removedRouteGraphConnection : updater.removedRouteGraphConnections) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("removing route graph connection: " + removedRouteGraphConnection);
+
+ ConnectionEntity ce = removedRouteGraphConnection.getHint(ElementHints.KEY_CONNECTION_ENTITY);
+ if (ce == null)
+ continue;
+ Object connectionData = ElementUtils.getObject(removedRouteGraphConnection);
+ tempConnections.clear();
+ for (Connection conn : ce.getTerminalConnections(tempConnections)) {
+ ((Element) conn.node).removeHintWithoutNotification(new TerminalKeyOf(conn.terminal, connectionData, Connection.class));
+ // To be sure the view will be up-to-date, mark the node
+ // connected to the removed connection dirty.
+ dirty.add(conn.node);
+ }
+ }
+ Timing.END(task2);
+
+ task2 = Timing.BEGIN("removeBranchPoints");
+ for (IElement removed : updater.removedBranchPoints) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("removing branch point: " + removed);
+
+ unmapElement(removed.getHint(ElementHints.KEY_OBJECT));
+ removeNodeTopologyHints((Element) removed);
+
+ IElement connection = ElementUtils.getParent(removed);
+ if (connection != null) {
+ dirty.add(connection);
+ }
+ }
+ Timing.END(task2);
+
+ task2 = Timing.BEGIN("removeConnectionSegments");
+ for (IElement removed : updater.removedConnectionSegments) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("removing segment: " + removed);
+
+ unmapElement(removed.getHint(ElementHints.KEY_OBJECT));
+ removeEdgeTopologyHints((Element) removed);
+
+ IElement connection = ElementUtils.getParent(removed);
+ if (connection != null) {
+ dirty.add(connection);
+ }
+ }
+ Timing.END(task2);
+
+ task2 = Timing.BEGIN("removeElements");
+ for (IElement removed : updater.removedElements) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("removing element: " + removed);
+
+ removed.setHint(KEY_REMOVE_RELATIONSHIPS, Boolean.TRUE);
+ if (diagram.containsElement(removed)) {
+ diagram.removeElement(removed);
+ }
+ unmapElement(removed.getHint(ElementHints.KEY_OBJECT));
+ removeNodeTopologyHints((Element) removed);
+
+ // No use marking removed elements dirty.
+ dirty.remove(removed);
+ }
+ Timing.END(task2);
+
+ // TODO: get rid of this
+ task2 = Timing.BEGIN("removeConnectionEntities");
+ for (Resource ce : updater.removedConnectionEntities) {
+ unmapConnection(ce);
+ }
+ Timing.END(task2);
+
+ task2 = Timing.BEGIN("setConnectionData");
+ for (ConnectionData cd : updater.changedConnectionEntities.values()) {
+ cd.impl.setData(cd.segments, cd.branchPoints);
+ }
+ Timing.END(task2);
+
+ // TODO: get rid of this
+ task2 = Timing.BEGIN("addConnectionEntities");
+ for (Map.Entry<Resource, ConnectionEntityImpl> entry : updater.addedConnectionEntities
+ .entrySet()) {
+ mapConnection(entry.getKey(), entry.getValue());
+ }
+ Timing.END(task2);
+
+ task2 = Timing.BEGIN("addBranchPoints");
+ for (IElement added : updater.addedBranchPoints) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("adding branch point: " + added);
+
+ mapElement(ElementUtils.getObject(added), added);
+
+ IElement connection = ElementUtils.getParent(added);
+ if (connection != null) {
+ dirty.add(connection);
+ }
+ }
+ Timing.END(task2);
+
+ // Add new elements at end of diagram, element order will be synchronized later.
+ task2 = Timing.BEGIN("addElements");
+ for(Resource r : updater.content.elements) {
+ IElement added = updater.addedElementMap.get(r);
+ if(added != null) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("adding element: " + added);
+
+ //Object task3 = BEGIN("mapElement " + added);
+ Object task3 = Timing.BEGIN("mapElement");
+ mapElement(added.getHint(ElementHints.KEY_OBJECT), added);
+ Timing.END(task3);
+
+ //task3 = BEGIN("addElement " + added);
+ task3 = Timing.BEGIN("addElement");
+ //System.out.println("diagram.addElement: " + added + " - " + diagram);
+ diagram.addElement(added);
+ dirty.add(added);
+ Timing.END(task3);
+ }
+ }
+ Timing.END(task2);
+
+ // We've ensured that all nodes must have been and
+ // mapped before reaching this.
+ task2 = Timing.BEGIN("addConnectionSegments");
+ for (IElement added : updater.addedConnectionSegments) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("adding segment: " + added);
+
+ PlaceholderConnection cb = added.removeHint(GraphToDiagramSynchronizer.KEY_CONNECTION_BEGIN_PLACEHOLDER);
+ PlaceholderConnection ce = added.removeHint(GraphToDiagramSynchronizer.KEY_CONNECTION_END_PLACEHOLDER);
+ if (cb == null || ce == null) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ warning("ignoring connection segment " + added + ", connectivity was not resolved (begin=" + cb + ", end=" + ce +")", null);
+ continue;
+ }
+
+ mapElement(ElementUtils.getObject(added), added);
+
+ IElement beginNode = assertMappedElement(cb.node);
+ IElement endNode = assertMappedElement(ce.node);
+
+ if (cb != null)
+ connect(added, cb.end, beginNode, cb.terminal);
+ if (ce != null)
+ connect(added, ce.end, endNode, ce.terminal);
+
+ IElement connection = ElementUtils.getParent(added);
+ if (connection != null) {
+ dirty.add(connection);
+ }
+ }
+ Timing.END(task2);
+
+ // We've ensured that all nodes must have been and
+ // mapped before reaching this.
+
+ task2 = Timing.BEGIN("handle dirty RouteGraph connections");
+ for (IElement addedRouteGraphConnection : updater.addedRouteGraphConnectionMap.values()) {
+ updateDirtyRouteGraphConnection(addedRouteGraphConnection, dirty);
+ }
+ Timing.END(task2);
+
+ // Prevent memory leaks
+ tempConnections.clear();
+
+ // Make sure that the diagram element order matches that of the database.
+ final TObjectIntHashMap<IElement> orderMap = new TObjectIntHashMap<IElement>(2 * updater.content.elements.size());
+ int i = 1;
+ for (Resource r : updater.content.elements) {
+ IElement e = getMappedElement(r);
+ if (e != null)
+ orderMap.put(e, i);
+ ++i;
+ }
+ diagram.sort(new Comparator<IElement>() {
+ @Override
+ public int compare(IElement e1, IElement e2) {
+ int o1 = orderMap.get(e1);
+ int o2 = orderMap.get(e2);
+ return o1 - o2;
+ }
+ });
+
+ // TODO: consider removing this. The whole thing should work without it and
+ // this "fix" will only be hiding the real problems.
+ task2 = Timing.BEGIN("fixChangedConnections");
+ for (ConnectionData cd : updater.changedConnectionEntities.values()) {
+ cd.impl.fix();
+ }
+ Timing.END(task2);
+
+ task2 = Timing.BEGIN("validateAndFix");
+ DiagramUtils.validateAndFix(diagram, dirty);
+ Timing.END(task2);
+
+ // This will fire connection entity change listeners
+ task2 = Timing.BEGIN("Postprocess connection changes");
+ for (ConnectionData cd : updater.changedConnectionEntities.values()) {
+ ConnectionChildren oldChildren = connectionChangeData.get(cd.impl);
+ if (oldChildren != null) {
+ ConnectionChildren currentChildren = cd.impl.getConnectionChildren();
+ cd.impl.fireListener(oldChildren, currentChildren);
+ }
+ }
+ Timing.END(task2);
+
+ task2 = Timing.BEGIN("setDirty");
+ for (IElement e : dirty) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("MARKING ELEMENT DIRTY: " + e);
+ e.setHint(Hints.KEY_DIRTY, Hints.VALUE_SG_DIRTY);
+ }
+ Timing.END(task2);
+
+ // Signal about possible changes in the z-order of diagram elements.
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("MARKING DIAGRAM DIRTY: " + diagram);
+ diagram.setHint(Hints.KEY_DIRTY, Hints.VALUE_Z_ORDER_CHANGED);
+
+ // Mark the updater as "processed".
+ updater.clear();
+
+ // Inform listeners that the diagram has been updated.
+ diagram.setHint(DiagramModelHints.KEY_DIAGRAM_CONTENTS_UPDATED, Boolean.TRUE);
+ }
+ };
+ }
+
+ /**
+ * @param connection
+ * @param dirtySet
+ */
+ private void updateDirtyRouteGraphConnection(IElement connection, Set<IElement> dirtySet) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("updating dirty route graph connection: " + connection);
+
+ ConnectionEntity ce = connection.getHint(ElementHints.KEY_CONNECTION_ENTITY);
+ if (ce == null)
+ return;
+
+ tempConnections.clear();
+ Object connectionData = ElementUtils.getObject(connection);
+ for (Connection conn : ce.getTerminalConnections(tempConnections)) {
+ ((Element) conn.node).setHintWithoutNotification(
+ new TerminalKeyOf(conn.terminal, connectionData, Connection.class),
+ conn);
+ if (dirtySet != null)
+ dirtySet.add(conn.node);
+ }
+
+ // Prevent memory leaks.
+ tempConnections.clear();
+ }
+
+ abstract class ElementUpdater extends AbstractDiagramUpdater {
+ private final IElement newElement;
+
+ public ElementUpdater(Double priority, String runnerName, IElement newElement) {
+ super(priority, runnerName);
+ if (newElement == null)
+ throw new NullPointerException("null element");
+ this.newElement = newElement;
+ }
+
+ @Override
+ public String toString() {
+ return super.toString() + "[" + newElement + "]";
+ }
+
+ @Override
+ public void run() {
+// System.out.println("ElementUpdateRunner new=" + newElement);
+ Object elementResource = newElement.getHint(ElementHints.KEY_OBJECT);
+// System.out.println("ElementUpdateRunner res=" + elementResource);
+ final Element mappedElement = (Element) getMappedElement(elementResource);
+// System.out.println("ElementUpdateRunner mapped=" + mappedElement);
+ if (mappedElement == null) {
+ if (DebugPolicy.DEBUG_ELEMENT_LIFECYCLE) {
+ System.out.println("SKIP DIAGRAM UPDATE " + this + " for element resource " + elementResource + ", no mapped element (newElement=" + newElement + ")");
+ }
+ // Indicates the element has been removed from the graph.
+ return;
+ }
+
+ Object task = Timing.BEGIN(runnerName);
+ forMappedElement(mappedElement);
+ Timing.END(task);
+ }
+
+ protected abstract void forMappedElement(Element mappedElement);
+ }
+
+ ElementUpdater nodeUpdater(final Resource resource, final IElement newElement) {
+
+ return new ElementUpdater(DIAGRAM_UPDATE_NODE_PRIORITY, "updateNode", newElement) {
+
+ Collection<Terminal> getTerminals(IElement e) {
+ Collection<Terminal> ts = Collections.emptyList();
+ TerminalTopology tt = e.getElementClass().getAtMostOneItemOfClass(TerminalTopology.class);
+ if (tt != null) {
+ ts = new ArrayList<Terminal>();
+ tt.getTerminals(newElement, ts);
+ }
+ return ts;
+ }
+
+ @Override
+ protected void forMappedElement(final Element mappedElement) {
+ if (DebugPolicy.DEBUG_NODE_UPDATE)
+ System.out.println("running node updater: " + this + " - new element: " + newElement);
+
+ // Newly loaded node elements NEVER contain topology-related
+ // hints, i.e. TerminalKeyOf hints. Instead all connections are
+ // actually set into element hints when connection edges are
+ // loaded.
+
+ Collection<Terminal> oldTerminals = getTerminals(mappedElement);
+ Collection<Terminal> newTerminals = getTerminals(newElement);
+ if (!oldTerminals.equals(newTerminals)) {
+ // Okay, there are differences in the terminals. Need to fix
+ // the TerminalKeyOf hint values to use the new terminal
+ // instances when correspondences exist.
+
+ // If there is no correspondence for an old terminal, we
+ // are simply forced to remove the hints related to this
+ // connection.
+
+ Map<Terminal, Terminal> newTerminalMap = new HashMap<Terminal, Terminal>(newTerminals.size());
+ for (Terminal t : newTerminals) {
+ newTerminalMap.put(t, t);
+ }
+
+ for (Map.Entry<TerminalKeyOf, Object> entry : mappedElement.getHintsOfClass(TerminalKeyOf.class).entrySet()) {
+ TerminalKeyOf key = entry.getKey();
+ Connection c = (Connection) entry.getValue();
+ if (c.node == mappedElement) {
+ Terminal newTerminal = newTerminalMap.get(c.terminal);
+ if (newTerminal != null) {
+ c = new Connection(c.edge, c.end, c.node, newTerminal);
+ ((Element) c.edge).setHintWithoutNotification(EndKeyOf.get(c.end), c);
+ } else {
+ mappedElement.removeHintWithoutNotification(key);
+ }
+ }
+ }
+ }
+
+ updateMappedElement(mappedElement, newElement);
+ mappedElement.setHint(Hints.KEY_DIRTY, Hints.VALUE_SG_DIRTY);
+ }
+ };
+ }
+
+ ElementUpdater connectionUpdater(final Object data, final IElement newElement) {
+ return new ElementUpdater(DIAGRAM_UPDATE_CONNECTION_PRIORITY, "updateConnection", newElement) {
+ @Override
+ public void forMappedElement(Element mappedElement) {
+ if (DebugPolicy.DEBUG_CONNECTION_UPDATE)
+ System.out.println("running connection updater: " + this + " - new element: " + newElement
+ + " with data " + data);
+
+ // This is kept up-to-date by GDS, make sure not to overwrite it
+ // from the mapped element.
+ newElement.removeHint(ElementHints.KEY_CONNECTION_ENTITY);
+
+ updateMappedElement(mappedElement, newElement);
+ mappedElement.setHint(Hints.KEY_DIRTY, Hints.VALUE_SG_DIRTY);
+ }
+ };
+ }
+
+ ElementUpdater edgeUpdater(final Object data, final IElement newElement) {
+ return new ElementUpdater(DIAGRAM_UPDATE_EDGE_PRIORITY, "updateEdge", newElement) {
+ @Override
+ public void forMappedElement(Element mappedElement) {
+ if (DebugPolicy.DEBUG_EDGE_UPDATE)
+ System.out.println("running edge updater: " + this + " - new element: " + newElement
+ + " with data " + data);
+
+ updateMappedElement(mappedElement, newElement);
+ mappedElement.setHint(Hints.KEY_DIRTY, Hints.VALUE_SG_DIRTY);
+ }
+ };
+ }
+
+ ElementUpdater routeGraphConnectionUpdater(final Object data, final IElement newElement, final Set<Object> dirtyNodes) {
+ return new ElementUpdater(DIAGRAM_UPDATE_CONNECTION_PRIORITY, "updateRouteGraphConnection", newElement) {
+ @Override
+ public void forMappedElement(Element mappedElement) {
+ if (DebugPolicy.DEBUG_CONNECTION_UPDATE)
+ System.out.println("running route graph connection updater: " + this + " - new element: " + newElement
+ + " with data " + data);
+
+ // Remove all TerminalKeyOf hints from nodes that were
+ // previously connected to the connection (mappedElement)
+ // before updating mappedElement with new topology information.
+
+ for (Object dirtyNodeObject : dirtyNodes) {
+ Element dirtyNode = (Element) getMappedElement(dirtyNodeObject);
+ if (dirtyNode == null)
+ continue;
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE_DETAIL)
+ System.out.println("preparing node with dirty connectivity: " + dirtyNode);
+
+ for (Map.Entry<TerminalKeyOf, Object> entry : dirtyNode.getHintsOfClass(TerminalKeyOf.class).entrySet()) {
+ Connection conn = (Connection) entry.getValue();
+ Object connectionNode = conn.edge.getHint(ElementHints.KEY_OBJECT);
+ if (data.equals(connectionNode)) {
+ dirtyNode.removeHintWithoutNotification(entry.getKey());
+ }
+ }
+ }
+
+ // Update connection information, including topology
+ updateMappedElement(mappedElement, newElement);
+
+ // Reinstall TerminalKeyOf hints into nodes that are now connected
+ // to mappedElement to keep diagram run-time model properly in sync
+ // with the database.
+ updateDirtyRouteGraphConnection(mappedElement, null);
+
+ // TODO: should mark dirty nodes' scene graph dirty ?
+
+ mappedElement.setHint(Hints.KEY_DIRTY, Hints.VALUE_SG_DIRTY);
+ }
+ };
+ }
+
+ /**
+ * Copies hints from <code>newElement</code> to <code>mappedElement</code>
+ * asserting some validity conditions at the same time.
+ *
+ * @param mappedElement
+ * @param newElement
+ */
+ static void updateMappedElement(Element mappedElement, IElement newElement) {
+ if (mappedElement == newElement)
+ // Can't update anything if the two elements are the same.
+ return;
+
+ ElementClass oldClass = mappedElement.getElementClass();
+ ElementClass newClass = newElement.getElementClass();
+
+ Object mappedData = mappedElement.getHint(ElementHints.KEY_OBJECT);
+ Object newData = newElement.getHint(ElementHints.KEY_OBJECT);
+
+ assert mappedData != null;
+ assert newData != null;
+ assert mappedData.equals(newData);
+
+ if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE) {
+ System.out.println("Updating mapped element, setting hints\n from: " + newElement + "\n into: " + mappedElement);
+ }
+
+ // TODO: consider if this equals check is a waste of time or does it pay
+ // off due to having to reinitialize per-class caches for the new
+ // ElementClass that are constructed on the fly?
+ if (!newClass.equals(oldClass)) {
+ if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE) {
+ System.out.println(" old element class: " + oldClass);
+ System.out.println(" new element class: " + newClass);
+ }
+ mappedElement.setElementClass(newClass);
+ }
+
+ // Tuukka@2010-02-19: replaced with notifications for making
+ // the graph synchronizer more transparent to the client.
+
+ // Hint notifications will not work when this is used.
+ //mappedElement.setHintsWithoutNotification(newElement.getHints());
+
+ Map<DiscardableKey, Object> discardableHints = mappedElement.getHintsOfClass(DiscardableKey.class);
+
+ // Set all hints from newElement to mappedElement.
+ // Leave any hints in mappedElement but not in newElement as is.
+ Map<Key, Object> hints = newElement.getHints();
+ Map<Key, Object> newHints = new HashMap<Key, Object>();
+ for (Map.Entry<Key, Object> entry : hints.entrySet()) {
+ Key key = entry.getKey();
+ Object newValue = entry.getValue();
+ Object oldValue = mappedElement.getHint(key);
+ if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE_DETAIL) {
+ System.out.println(" hint " + key + " compare values: " + oldValue + " -> " + newValue);
+ }
+ if (!newValue.equals(oldValue)) {
+ newHints.put(key, newValue);
+ if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE) {
+ System.out.format(" %-42s : %64s -> %-64s\n", key, oldValue, newValue);
+ }
+ } else {
+ // If the hint value has not changed but the hint still exists
+ // we don't need to discard it even if it is considered
+ // discardable.
+ discardableHints.remove(key);
+ }
+ }
+
+ // Set all hints at once and send notifications after setting the values.
+ if (!discardableHints.isEmpty()) {
+ if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE)
+ System.out.println("Discarding " + discardableHints.size() + " discardable hints:\n " + discardableHints);
+ mappedElement.removeHints(discardableHints.keySet());
+ }
+ if (!newHints.isEmpty()) {
+ if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE) {
+ System.out.println("Updating mapped element, setting new hints:\n\t"
+ + EString.implode(newHints.entrySet(), "\n\t") + "\nto replace old hints\n\t"
+ + EString.implode(mappedElement.getHints().entrySet(), "\n\t"));
+ }
+ mappedElement.setHints(newHints);
+ }
+ if (DebugPolicy.DEBUG_GENERAL_ELEMENT_UPDATE) {
+ System.out.println("All hints after update:\n\t"
+ + EString.implode(mappedElement.getHints().entrySet(), "\n\t"));
+ }
+ }
+
+ class TransactionListener extends SessionEventListenerAdapter {
+ long startTime;
+ @Override
+ public void writeTransactionStarted() {
+ startTime = System.nanoTime();
+ if (DebugPolicy.DEBUG_WRITE_TRANSACTIONS)
+ System.out.println(GraphToDiagramSynchronizer.class.getSimpleName() + ".sessionEventListener.writeTransactionStarted");
+ inWriteTransaction.set(true);
+ }
+ @Override
+ public void writeTransactionFinished() {
+ long endTime = System.nanoTime();
+ if (DebugPolicy.DEBUG_WRITE_TRANSACTIONS)
+ System.out.println(GraphToDiagramSynchronizer.class.getSimpleName() + ".sessionEventListener.writeTransactionFinished: " + (endTime - startTime)*1e-6 + " ms");
+ inWriteTransaction.set(false);
+ scheduleGraphUpdates();
+ }
+ };
+
+ Object graphUpdateLock = new Object();
+ TransactionListener sessionListener = null;
+ AtomicBoolean inWriteTransaction = new AtomicBoolean(false);
+ AtomicBoolean graphUpdateRequestScheduled = new AtomicBoolean(false);
+ List<GraphUpdateReactor> queuedGraphUpdates = new ArrayList<GraphUpdateReactor>();
+
+ private void offerGraphUpdate(GraphUpdateReactor update) {
+ if (DebugPolicy.DEBUG_GRAPH_UPDATE)
+ System.out.println("offerGraphUpdate: " + update);
+ boolean inWrite = inWriteTransaction.get();
+ synchronized (graphUpdateLock) {
+ if (DebugPolicy.DEBUG_GRAPH_UPDATE)
+ System.out.println("queueing graph update: " + update);
+ queuedGraphUpdates.add(update);
+ }
+ if (!inWrite) {
+ if (DebugPolicy.DEBUG_GRAPH_UPDATE)
+ System.out.println("scheduling queued graph update immediately: " + update);
+ scheduleGraphUpdates();
+ }
+ }
+
+ private Collection<GraphUpdateReactor> scrubGraphUpdates() {
+ synchronized (graphUpdateLock) {
+ if (queuedGraphUpdates.isEmpty())
+ return Collections.emptyList();
+ final List<GraphUpdateReactor> updates = queuedGraphUpdates;
+ queuedGraphUpdates = new ArrayList<GraphUpdateReactor>();
+ return updates;
+ }
+ }
+
+ private void scheduleGraphUpdates() {
+ synchronized (graphUpdateLock) {
+ if (queuedGraphUpdates.isEmpty())
+ return;
+ if (!graphUpdateRequestScheduled.compareAndSet(false, true))
+ return;
+ }
+
+ if (DebugPolicy.DEBUG_GRAPH_UPDATE)
+ System.out.println("scheduling " + queuedGraphUpdates.size() + " queued graph updates with ");
+
+ session.asyncRequest(new ReadRequest() {
+ @Override
+ public void run(final ReadGraph graph) throws DatabaseException {
+ Collection<GraphUpdateReactor> updates;
+ synchronized (graphUpdateLock) {
+ graphUpdateRequestScheduled.set(false);
+ updates = scrubGraphUpdates();
+ }
+
+ if (!GraphToDiagramSynchronizer.this.isAlive())
+ return;
+
+ processGraphUpdates(graph, updates);
+ }
+ }, new ProcedureAdapter<Object>() {
+ @Override
+ public void exception(Throwable t) {
+ error(t);
+ }
+ });
+ }
+
+ private void processGraphUpdates(ReadGraph graph, final Collection<GraphUpdateReactor> graphUpdates)
+ throws DatabaseException {
+ final List<DiagramUpdater> diagramUpdates = new ArrayList<DiagramUpdater>(graphUpdates.size());
+
+ // Run GraphUpdaters and gather DiagramUpdaters.
+ if (DebugPolicy.DEBUG_GRAPH_UPDATE)
+ System.out.println("Running GRAPH updates: " + graphUpdates);
+ for (GraphUpdateReactor graphUpdate : graphUpdates) {
+ DiagramUpdater diagramUpdate = graphUpdate.graphUpdate(graph);
+ if (diagramUpdate != null) {
+ if (DebugPolicy.DEBUG_GRAPH_UPDATE)
+ System.out.println(graphUpdate + " => " + diagramUpdate);
+ diagramUpdates.add(diagramUpdate);
+ }
+ }
+
+ if (diagramUpdates.isEmpty())
+ return;
+
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)
+ System.out.println("Diagram updates: " + diagramUpdates);
+ Collections.sort(diagramUpdates, DiagramUpdater.DIAGRAM_UPDATER_COMPARATOR);
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)
+ System.out.println("Sorted diagram updates: " + diagramUpdates);
+
+ ThreadUtils.asyncExec(canvas.getThreadAccess(), new StateRunnable() {
+ @Override
+ public void run() {
+ if (GraphToDiagramSynchronizer.this.isAlive() && getState() != State.DISPOSED)
+ safeRunInState(State.UPDATING_DIAGRAM, this);
+ }
+
+ @Override
+ public void execute() throws InvocationTargetException {
+ // Block out diagram write transactions.
+ DiagramUtils.inDiagramTransaction(diagram, TransactionType.READ, new Runnable() {
+ @Override
+ public void run() {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)
+ System.out.println("Running DIAGRAM updates: " + diagramUpdates);
+ for (DiagramUpdater update : diagramUpdates) {
+ if (DebugPolicy.DEBUG_DIAGRAM_UPDATE)
+ System.out.println("Running DIAGRAM update: " + update);
+ update.run();
+ }
+ }
+ });
+
+ setCanvasDirty();
+ }
+ });
+ }
+
+ private void attachSessionListener(Session session) {
+ SessionEventSupport support = session.peekService(SessionEventSupport.class);
+ if (support != null) {
+ sessionListener = new TransactionListener();
+ support.addListener(sessionListener);
+ }
+ }
+
+ private void detachSessionListener() {
+ if (sessionListener != null) {
+ session.getService(SessionEventSupport.class).removeListener(sessionListener);
+ sessionListener = null;
+ }
+ }
+
+
+ // ------------------------------------------------------------------------
+ // GRAPH TO DIAGRAM SYNCHRONIZATION LOGIC END
+ // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+
+ // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ // DIAGRAM CHANGE TRACKING, MAINLY VALIDATION PURPOSES.
+ // This does not try to synchronize anything back into the graph.
+ // ------------------------------------------------------------------------
+
+ IHintListener elementHintValidator = new HintListenerAdapter() {
+ @Override
+ public void hintChanged(IHintObservable sender, Key key, Object oldValue, Object newValue) {
+ if (!(sender instanceof Element))
+ throw new IllegalStateException("invalid sender: " + sender);
+ Element e = (Element) sender;
+ if (newValue != null) {
+ if (key instanceof TerminalKeyOf) {
+ Connection c = (Connection) newValue;
+ if (e != c.node)
+ throw new IllegalStateException("TerminalKeyOf hint of node " + e + " refers to a different node " + c.node + ". Should be the same.");
+ Object edgeObject = ElementUtils.getObject(c.edge);
+ if (!(edgeObject instanceof EdgeResource))
+ throw new IllegalStateException("EndKeyOf hint of edge " + c.edge + " refers contains an invalid object: " + edgeObject);
+ } else if (key instanceof EndKeyOf) {
+ Connection c = (Connection) newValue;
+ if (e != c.edge)
+ throw new IllegalStateException("EndKeyOf hint of edge " + e + " refers to a different edge " + c.edge + ". Should be the same.");
+ Object edgeObject = ElementUtils.getObject(c.edge);
+ if (!(edgeObject instanceof EdgeResource))
+ throw new IllegalStateException("EndKeyOf hint of edge " + e + " refers contains an invalid object: " + edgeObject);
+ }
+ }
+ }
+ };
+
+ class DiagramListener implements CompositionListener, CompositionVetoListener {
+ @Override
+ public boolean beforeElementAdded(IDiagram d, IElement e) {
+ // Make sure that MutatedElements NEVER get added to the diagram.
+ if (d == diagram) {
+ if (!(e instanceof Element)) {
+ // THIS IS NOT GOOD!
+ error("Attempting to add another implementation of IElement besides Element (=" + e.getElementClass().getClass().getName() + ") to the synchronized diagram which means that there is a bug somewhere! See stack trace to find out who is doing this!", new Exception("stacktrace"));
+ System.err.println("Attempting to add another implementation of IElement besides Element (=" + e.getElementClass().getClass().getName() + ") to the synchronized diagram which means that there is a bug somewhere! See Error Log.");
+ return false;
+ }
+
+ // Perform sanity checks that might veto the element addition.
+ boolean pass = true;
+
+ // Check that all elements added to the diagram are adaptable to Resource
+ ElementClass ec = e.getElementClass();
+ Resource resource = ElementUtils.adapt(ec, Resource.class);
+ if (resource == null) {
+ pass = false;
+ LOGGER.error("", new Exception("Attempted to add an element to the diagram that is not adaptable to Resource: " + e + ", class: " + ec));
+ }
+
+ // Sanity check connection hints
+ for (Map.Entry<TerminalKeyOf, Object> entry : e.getHintsOfClass(TerminalKeyOf.class).entrySet()) {
+ Connection c = (Connection) entry.getValue();
+ Object edgeObject = ElementUtils.getObject(c.edge);
+ if (e != c.node) {
+ System.err.println("Invalid node in TerminalKeyOf hint: " + entry.getKey() + "=" + entry.getValue());
+ System.err.println("\tconnection.edge=" + c.edge);
+ System.err.println("\tconnection.node=" + c.node);
+ System.err.println("\tconnection.end=" + c.end);
+ System.err.println("\telement=" + e);
+ System.err.println("\telement class=" + e.getElementClass());
+ pass = false;
+ }
+ if (!(edgeObject instanceof EdgeResource)) {
+ System.err.println("Invalid object in TerminalKeyOf hint edge: " + entry.getKey() + "=" + entry.getValue());
+ System.err.println("\tconnection.edge=" + c.edge);
+ System.err.println("\tconnection.node=" + c.node);
+ System.err.println("\tconnection.end=" + c.end);
+ System.err.println("\telement=" + e);
+ System.err.println("\telement class=" + e.getElementClass());
+ pass = false;
+ }
+ }
+
+ return pass;
+ }
+ return true;
+ }
+
+ @Override
+ public boolean beforeElementRemoved(IDiagram d, IElement e) {
+ // Never veto diagram changes.
+ return true;
+ }
+
+ @Override
+ public void onElementAdded(IDiagram d, IElement e) {
+ if (DebugPolicy.DEBUG_ELEMENT_LIFECYCLE)
+ System.out.println("[" + d + "] element added: " + e);
+
+ if (USE_ELEMENT_VALIDATING_LISTENERS)
+ e.addHintListener(elementHintValidator);
+ }
+
+ @Override
+ public void onElementRemoved(IDiagram d, IElement e) {
+ if (DebugPolicy.DEBUG_ELEMENT_LIFECYCLE)
+ System.out.println("[" + d + "] element removed: " + e);
+
+ if (USE_ELEMENT_VALIDATING_LISTENERS)
+ e.removeHintListener(elementHintValidator);
+
+ if (e.containsHint(KEY_REMOVE_RELATIONSHIPS))
+ relationshipHandler.denyAll(diagram, e);
+ }
+ }
+
+ DiagramListener diagramListener = new DiagramListener();
+
+ static void removeNodeTopologyHints(Element node) {
+ Set<TerminalKeyOf> terminalKeys = node.getHintsOfClass(TerminalKeyOf.class).keySet();
+ if (!terminalKeys.isEmpty()) {
+ removeNodeTopologyHints(node, terminalKeys);
+ }
+ }
+
+ static void removeNodeTopologyHints(Element node, Collection<TerminalKeyOf> terminalKeys) {
+ for (TerminalKeyOf key : terminalKeys) {
+ Connection c = node.removeHintWithoutNotification(key);
+ if (c != null) {
+ removeEdgeTopologyHints((Element) c.edge);
+ }
+ }
+ }
+
+ static void removeEdgeTopologyHints(Element edge) {
+ Object edgeData = edge.getHint(ElementHints.KEY_OBJECT);
+ for (EndKeyOf key : EndKeyOf.KEYS) {
+ Connection c = edge.removeHintWithoutNotification(key);
+ if (c != null) {
+ ((Element) c.node).removeHintWithoutNotification(new TerminalKeyOf(c.terminal, edgeData, Connection.class));
+ }
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // DIAGRAM CHANGE TRACKING, MAINLY VALIDATION PURPOSES.
+ // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+
+ // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ // BACKEND TO DIAGRAM LOAD/LISTEN LOGIC BEGIN
+ // ------------------------------------------------------------------------
+
+ void adaptDiagramClass(AsyncReadGraph graph, Resource diagram, final AsyncProcedure<DiagramClass> procedure) {
+ graph.forAdapted(diagram, DiagramClass.class, new AsyncProcedure<DiagramClass>() {
+ @Override
+ public void exception(AsyncReadGraph graph, Throwable throwable) {
+ procedure.exception(graph, throwable);
+ }
+
+ @Override
+ public void execute(AsyncReadGraph graph, DiagramClass dc) {
+ // To move TopologyImpl out of here, we need a separate
+ // DiagramClassFactory that takes a canvas context as an argument.
+ // DataElementMapImpl, ElementFactoryImpl and diagramLifeCycle can
+ // safely stay here.
+ procedure.execute(graph, dc.newClassWith(
+ // This handler takes care of the topology of the diagram model.
+ // It sets and fixes element hints related to describing the
+ // connectivity of elements.
+ diagramTopology,
+ // TODO: not quite sure whether this can prove itself useful or not.
+ elementFactory,
+ // This map provides a bidirectional mapping between
+ // IElement and back-end objects.
+ dataElementMap,
+ // This handler provides a facility to adapt an element class
+ // to work properly with a diagram synchronized using this
+ // GraphToDiagramSynchronizer.
+ substituteElementClass,
+ // These handlers provide a way to create simple identified
+ // uni- and bidirectional relationships between any diagram
+ // objects/elements.
+ relationshipHandler));
+ }
+ });
+ }
+
+ static Connection connect(IElement edge, EdgeEnd end, IElement element, Terminal terminal) {
+ Connection c = new Connection(edge, end, element, terminal);
+
+ Object edgeData = edge.getHint(ElementHints.KEY_OBJECT);
+ if (DebugPolicy.DEBUG_CONNECTION) {
+ System.out.println("[connect](edge=" + edge + ", edgeData=" + edgeData + ", end=" + end + ", element="
+ + element + ", terminal=" + terminal + ")");
+ }
+
+ TerminalKeyOf key = new TerminalKeyOf(terminal, edgeData, Connection.class);
+ element.setHint(key, c);
+
+ EndKeyOf key2 = EndKeyOf.get(end);
+ edge.setHint(key2, c);
+
+ return c;
+ }
+
+ static class ElementFactoryImpl implements ElementFactory {
+ @Override
+ public IElement spawnNew(ElementClass clazz) {
+ IElement e = Element.spawnNew(clazz);
+ return e;
+ }
+ }
+
+ ElementFactoryImpl elementFactory = new ElementFactoryImpl();
+
+ public static final Object FIRST_TIME = new Object() {
+ @Override
+ public String toString() {
+ return "FIRST_TIME";
+ }
+ };
+
+
+ /**
+ * A base for all listeners of graph requests performed internally by
+ * GraphToDiagramSynchronizer.
+ *
+ * @param <T> type of stored data element
+ * @param <Result> query result type
+ */
+ abstract class BaseListener<T, Result> implements AsyncListener<Result> {
+
+ protected final T data;
+
+ private Object oldResult = FIRST_TIME;
+
+ protected boolean disposed = false;
+
+ final ICanvasContext canvas;
+
+ public BaseListener(T data) {
+ this.canvas = GraphToDiagramSynchronizer.this.canvas;
+ this.data = data;
+ }
+
+ @Override
+ public void exception(AsyncReadGraph graph, Throwable throwable) {
+ // Exceptions are always expected to mean that the listener should
+ // be considered disposed once a query fails.
+ disposed = true;
+ }
+
+ abstract void execute(AsyncReadGraph graph, Object oldResult, Object newResult);
+
+ @Override
+ public void execute(AsyncReadGraph graph, Result result) {
+ if (DebugPolicy.DEBUG_LISTENER_BASE)
+ System.out.println("BaseListener: " + result);
+
+ if (disposed) {
+ if (DebugPolicy.DEBUG_LISTENER_BASE)
+ System.out.println("BaseListener: execute invoked although listener is disposed!");
+ return;
+ }
+
+ // A null result will permanently mark this listener disposed!
+ if (result == null) {
+ disposed = true;
+ if (DebugPolicy.DEBUG_LISTENER_BASE)
+ System.out.println(this + " null result, listener marked disposed");
+ }
+
+ if (oldResult == FIRST_TIME) {
+ oldResult = result;
+ if (DebugPolicy.DEBUG_LISTENER_BASE)
+ System.out.println(this + " first result computed: " + result);
+ } else {
+ if (DebugPolicy.DEBUG_LISTENER_BASE)
+ System.out.println(this + " result changed from '" + oldResult + "' to '" + result + "'");
+ try {
+ execute(graph, oldResult, result);
+ } finally {
+ oldResult = result;
+ }
+ }
+ }
+
+ @Override
+ public boolean isDisposed() {
+ if (disposed)
+ return true;
+
+ boolean alive = isAlive();
+ //System.out.println(getClass().getName() + ": isDisposed(" + resource.getResourceId() + "): canvas=" + canvas + ", isAlive=" + alive);
+ if (!alive)
+ return true;
+ // If a mapping no longer exists for this element, dispose of this
+ // listener.
+ //IElement e = getMappedElement(resource);
+ //System.out.println(getClass().getName() + ": isDisposed(" + resource.getResourceId() + "): canvas=" + canvas + ", element=" + e);
+ //return e == null;
+ return false;
+ }
+
+// @Override
+// protected void finalize() throws Throwable {
+// System.out.println("finalize listener: " + this);
+// super.finalize();
+// }
+ }
+
+ class DiagramClassRequest extends BaseRequest2<Resource, DiagramClass> {
+ public DiagramClassRequest(Resource resource) {
+ super(GraphToDiagramSynchronizer.this.canvas, resource);
+ }
+
+ @Override
+ public void perform(AsyncReadGraph graph, AsyncProcedure<DiagramClass> procedure) {
+ adaptDiagramClass(graph, data, procedure);
+ }
+ }
+
+ public class DiagramContentListener extends BaseListener<Resource, DiagramContents> {
+
+ public DiagramContentListener(Resource resource) {
+ super(resource);
+ }
+
+ @Override
+ public void execute(final AsyncReadGraph graph, Object oldResult, Object newResult) {
+ final DiagramContents newContent = (newResult == null) ? new DiagramContents()
+ : (DiagramContents) newResult;
+
+ // diagramGraphUpdater is called synchronously during
+ // loading. The first result will not get updated through
+ // this listener but through loadDiagram.
+
+ if (DebugPolicy.DISABLE_DIAGRAM_UPDATES) {
+ System.out.println("Skipped diagram content update: " + newResult);
+ return;
+ }
+
+ if (DebugPolicy.DEBUG_DIAGRAM_LISTENER)
+ System.out.println("diagram contents changed: " + oldResult + " => " + newResult);
+
+ offerGraphUpdate( diagramGraphUpdater(newContent) );
+ }
+
+ @Override
+ public boolean isDisposed() {
+ return !isAlive();
+ }
+
+ @Override
+ public void exception(AsyncReadGraph graph, Throwable t) {
+ super.exception(graph, t);
+ error("DiagramContentRequest failed", t);
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // BACKEND TO DIAGRAM LOAD/LISTEN LOGIC END
+ // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+
+ // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ // GRAPH-CUSTOMIZED DIAGRAM TOPOLOGY HANDLER BEGIN
+ // ------------------------------------------------------------------------
+
+ static class TopologyImpl implements Topology {
+
+ @Override
+ public Connection getConnection(IElement edge, EdgeEnd end) {
+ Key key = EndKeyOf.get(end);
+ Connection c = edge.getHint(key);
+ if (c == null)
+ return null;
+ return c;
+ }
+
+ @Override
+ public void getConnections(IElement node, Terminal terminal, Collection<Connection> connections) {
+// IDiagram d = ElementUtils.getDiagram(node);
+ for (Map.Entry<TerminalKeyOf, Object> entry : node.getHintsOfClass(TerminalKeyOf.class).entrySet()) {
+ // First check that the terminal matches.
+ TerminalKeyOf key = entry.getKey();
+ if (!key.getTerminal().equals(terminal))
+ continue;
+
+ Connection c = (Connection) entry.getValue();
+ if (c != null) {
+ connections.add(c);
+ }
+ }
+ }
+
+ @Override
+ public void connect(IElement edge, EdgeEnd end, IElement node, Terminal terminal) {
+ if (node != null && terminal != null)
+ GraphToDiagramSynchronizer.connect(edge, end, node, terminal);
+
+ if (DebugPolicy.DEBUG_CONNECTION) {
+ if (end == EdgeEnd.Begin)
+ System.out.println("Connection started from: " + edge + ", " + end + ", " + node + ", " + terminal);
+ else
+ System.out.println("Creating connection to: " + edge + ", " + end + ", " + node + ", " + terminal);
+ }
+ }
+
+ @Override
+ public void disconnect(IElement edge, EdgeEnd end, IElement node, Terminal terminal) {
+ EndKeyOf edgeKey = EndKeyOf.get(end);
+ Connection c = edge.getHint(edgeKey);
+ if (c == null)
+ throw new UnsupportedOperationException("cannot disconnect, no Connection in edge " + edge);
+
+ for (Map.Entry<TerminalKeyOf, Object> entry : node.getHintsOfClass(TerminalKeyOf.class).entrySet()) {
+ Connection cc = (Connection) entry.getValue();
+ if (c == cc) {
+ node.removeHint(entry.getKey());
+ edge.removeHint(edgeKey);
+ return;
+ }
+ }
+
+ throw new UnsupportedOperationException("cannot disconnect, no connection between found between edge "
+ + edge + " and node " + node);
+ }
+ }
+
+ Topology diagramTopology = new TopologyImpl();
+
+ // ------------------------------------------------------------------------
+ // GRAPH-CUSTOMIZED DIAGRAM TOPOLOGY HANDLER END
+ // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+
+ // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ // DIAGRAM OBJECT RELATIONSHIP HANDLER BEGIN
+ // ------------------------------------------------------------------------
+
+ RelationshipHandler relationshipHandler = new RelationshipHandler() {
+
+ AssociativeMap map = new AssociativeMap(Associativity.of(true, false, false));
+
+ Object getPossibleObjectOrElement(Object o) {
+ if (o instanceof IElement) {
+ IElement e = (IElement) o;
+ Object oo = e.getHint(ElementHints.KEY_OBJECT);
+ return oo != null ? oo : e;
+ }
+ return o;
+ }
+
+ IElement getElement(Object o) {
+ if (o instanceof IElement)
+ return (IElement) o;
+ return getMappedElement(o);
+ }
+
+ @Override
+ public void claim(IDiagram diagram, Object subject,
+ Relationship predicate, Object object) {
+ Object sd = getPossibleObjectOrElement(subject);
+ Object od = getPossibleObjectOrElement(object);
+
+ Collection<Tuple> ts = null;
+ Relationship inverse = predicate.getInverse();
+ if (inverse != null)
+ ts = Arrays.asList(new Tuple(sd, predicate, od), new Tuple(od, inverse, sd));
+ else
+ ts = Collections.singletonList(new Tuple(sd, predicate, od));
+
+ synchronized (this) {
+ map.add(ts);
+ }
+
+ if (DebugPolicy.DEBUG_RELATIONSHIP) {
+ new Exception().printStackTrace();
+ System.out.println("Claimed relationships:");
+ for (Tuple t : ts)
+ System.out.println("\t" + t);
+ }
+ }
+
+ private void doDeny(IDiagram diagram, Object subject,
+ Relationship predicate, Object object) {
+ Object sd = getPossibleObjectOrElement(subject);
+ Object od = getPossibleObjectOrElement(object);
+ if (sd == subject || od == object) {
+ System.out
+ .println("WARNING: denying relationship '"
+ + predicate
+ + "' between diagram element(s), not back-end object(s): "
+ + sd + " -> " + od);
+ }
+
+ Collection<Tuple> ts = null;
+ Relationship inverse = predicate.getInverse();
+ if (inverse != null)
+ ts = Arrays.asList(new Tuple(sd, predicate, od), new Tuple(od,
+ inverse, sd));
+ else
+ ts = Collections.singleton(new Tuple(sd, predicate, od));
+
+ synchronized (this) {
+ map.remove(ts);
+ }
+
+ if (DebugPolicy.DEBUG_RELATIONSHIP) {
+ new Exception().printStackTrace();
+ System.out.println("Denied relationships:");
+ for (Tuple t : ts)
+ System.out.println("\t" + t);
+ }
+ }
+
+ @Override
+ public void deny(IDiagram diagram, Object subject,
+ Relationship predicate, Object object) {
+ synchronized (this) {
+ doDeny(diagram, subject, predicate, object);
+ }
+ }
+
+ @Override
+ public void deny(IDiagram diagram, Relation relation) {
+ synchronized (this) {
+ doDeny(diagram, relation.getSubject(), relation
+ .getRelationship(), relation.getObject());
+ }
+ }
+
+ @Override
+ public void denyAll(IDiagram diagram, Object element) {
+ synchronized (this) {
+ for (Relation relation : getRelations(diagram, element, null)) {
+ doDeny(diagram, relation.getSubject(), relation
+ .getRelationship(), relation.getObject());
+ }
+ }
+ }
+
+ @Override
+ public Collection<Relation> getRelations(IDiagram diagram,
+ Object element, Collection<Relation> result) {
+ if (DebugPolicy.DEBUG_GET_RELATIONSHIP)
+ System.out.println("getRelations(" + element + ")");
+ Object e = getPossibleObjectOrElement(element);
+
+ Collection<Tuple> tuples = null;
+ synchronized (this) {
+ tuples = map.get(new Tuple(e, null, null), null);
+ }
+
+ if (DebugPolicy.DEBUG_GET_RELATIONSHIP) {
+ System.out.println("Result size: " + tuples.size());
+ for (Tuple t : tuples)
+ System.out.println("\t" + t);
+ }
+
+ if (tuples.isEmpty())
+ return Collections.emptyList();
+ if (result == null)
+ result = new ArrayList<Relation>(tuples.size());
+ for (Tuple t : tuples) {
+ Object obj = t.getField(2);
+ IElement el = getElement(obj);
+ Relationship r = (Relationship) t.getField(1);
+ result.add(new Relation(element, r, el != null ? el : obj));
+ }
+ return result;
+ }
+
+ };
+
+ // ------------------------------------------------------------------------
+ // DIAGRAM ELEMENT RELATIONSHIP HANDLER END
+ // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+
+}
Code Review / simantics / platform.git / blobdiff