X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.graph.impl%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fgraph%2Fimpl%2Fcontribution%2FFinalViewpointContributionImpl.java;h=f514fa48c9aeee4daeda1684e2c1e158f47a35cd;hp=d39a7b420fedd6c992d37ea1ed89d3de4c17d27a;hb=0ae2b770234dfc3cbb18bd38f324125cf0faca07;hpb=24e2b34260f219f0d1644ca7a138894980e25b14 diff --git a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/FinalViewpointContributionImpl.java b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/FinalViewpointContributionImpl.java index d39a7b420..f514fa48c 100644 --- a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/FinalViewpointContributionImpl.java +++ b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/FinalViewpointContributionImpl.java @@ -1,191 +1,191 @@ -/******************************************************************************* - * Copyright (c) 2007, 2010 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.browsing.ui.graph.impl.contribution; - -import java.util.Collection; - -import org.simantics.browsing.ui.BuiltinKeys; -import org.simantics.browsing.ui.DataSource; -import org.simantics.browsing.ui.NodeContext; -import org.simantics.browsing.ui.PrimitiveQueryUpdater; -import org.simantics.browsing.ui.Tester; -import org.simantics.browsing.ui.content.ViewpointContribution; -import org.simantics.browsing.ui.graph.impl.request.ResourceQuery; -import org.simantics.db.AsyncReadGraph; -import org.simantics.db.ReadGraph; -import org.simantics.db.exception.DatabaseException; -import org.simantics.db.procedure.Listener; -import org.simantics.db.procedure.Procedure; -import org.simantics.utils.ui.ErrorLogger; - -/** - * Implement {@link #children(AsyncReadGraph)} and {@link #hasChildren(AsyncReadGraph)}. - * - * @author Tuukka Lehtonen - */ -abstract public class FinalViewpointContributionImpl extends ContributionStub implements GraphContribution { - - final private ResourceQuery> childQuery; - final private Procedure> childProcedure; - - final protected PrimitiveQueryUpdater updater; - final private NodeContext context; - final private BuiltinKeys.ViewpointContributionKey key; - - /** - * This identity is used to give the back-end graph requests a - * properly unique identity that so that the graph back-end caching - * and graph explorer node context caching work together properly. - * - * Consider having two graph explorer instances that have the same - * configuration (same evaluators) and are showing the same resource from - * the graph database. In this case the requests are actually meant to have - * an identical identity and performing the graph request will simply bind a - * new listener for the one and same request. - * - * @return an additional identity for graph back-end requests to make them - * properly unique - */ - public Object getIdentity() { - return key; - } - - public FinalViewpointContributionImpl(final PrimitiveQueryUpdater updater, NodeContext context, BuiltinKeys.ViewpointContributionKey key) { - - assert updater != null; - assert context != null; - assert key != null; - - this.updater = updater; - this.context = context; - this.key = key; - - this.childQuery = new ResourceQuery>(getIdentity(), context) { - - @Override - public Collection perform(ReadGraph graph) throws DatabaseException { - try { - // Make sure that null is not returned. - Collection result = children(graph, context); - if (result == null) - throw new NullPointerException("LazyContributionImpl.children is not allowed to return null, but " + FinalViewpointContributionImpl.this.getClass() + " just did it"); - return result; - } catch (DatabaseException e) { - throw e; - } catch (Throwable t) { - ErrorLogger.defaultLogError("LazyContributionImpl.childQuery produced unexpected exception.", t); - return ViewpointContribution.NO_CONTRIBUTION; - } - } - - @Override - public String toString() { - return "LazyContributionImpl[" + System.identityHashCode(FinalViewpointContributionImpl.this) + "].childQuery"; - } - - }; - - childProcedure = createProcedure(); - - } - - protected Procedure> createProcedure() { - - return new Procedure>() { - - @Override - public void execute(Collection result) { - replaceChildrenResult(result); - } - - public void exception(Throwable t) { - ErrorLogger.defaultLogError("LazyContributionImpl.childQuery failed, see exception for details.", t); - } - - @Override - public String toString() { - return "LazyContributionImpl[" + System.identityHashCode(FinalViewpointContributionImpl.this) + "].childProcedure"; - } - - }; - - } - - public NodeContext getContext() { - return context; - } - - @Override - public Collection getContribution() { - - //System.out.println("LazyViewpoint2@" + System.identityHashCode(this) + " getChildren() = " + children.length); - - if (children == org.simantics.browsing.ui.content.ViewpointContribution.PENDING_CONTRIBUTION) { - DataSource source = updater.getDataSource(ReadGraph.class); - if (source != null) { - source.schedule(graph -> { - if(childProcedure instanceof Listener) - graph.asyncRequest(childQuery, (Listener>)childProcedure); - else - graph.asyncRequest(childQuery, childProcedure); - }); - } - } - - //System.out.println("LazyViewpoint.getChildren returns " + children); - - return children; - - } - - protected void replaceChildrenResult(Collection result) { - setChildren(updater, result); - updater.scheduleReplace(context, key, this); - } - - /** - * @param - * @param clazz - * @return input of the specified class - * @throws ClassCastException if the input class does not match the - * specified class - * @throws NullPointerException if the input is null - */ - @SuppressWarnings("unchecked") - protected T getInput(Class clazz) throws ClassCastException { - Object o = context.getConstant(BuiltinKeys.INPUT); - if (o == null) - throw new NullPointerException("null input"); -// return clazz.cast(o); - return (T) o; - } - - /** - * @param - * @param clazz - * @return null if input is null or if the class does not match - */ - @SuppressWarnings("unchecked") - protected T tryGetInput(Class clazz) { - Object o = context.getConstant(BuiltinKeys.INPUT); - if (o != null && clazz.isInstance(o)) -// return clazz.cast(o); - return (T) o; - return null; - } - - @Override - public Tester getNodeContextTester() { - return null; - } - -} +/******************************************************************************* + * Copyright (c) 2007, 2010 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.browsing.ui.graph.impl.contribution; + +import java.util.Collection; + +import org.simantics.browsing.ui.BuiltinKeys; +import org.simantics.browsing.ui.DataSource; +import org.simantics.browsing.ui.NodeContext; +import org.simantics.browsing.ui.PrimitiveQueryUpdater; +import org.simantics.browsing.ui.Tester; +import org.simantics.browsing.ui.content.ViewpointContribution; +import org.simantics.browsing.ui.graph.impl.request.ResourceQuery; +import org.simantics.db.AsyncReadGraph; +import org.simantics.db.ReadGraph; +import org.simantics.db.exception.DatabaseException; +import org.simantics.db.procedure.Listener; +import org.simantics.db.procedure.Procedure; +import org.simantics.utils.ui.ErrorLogger; + +/** + * Implement {@link #children(AsyncReadGraph)} and {@link #hasChildren(AsyncReadGraph)}. + * + * @author Tuukka Lehtonen + */ +abstract public class FinalViewpointContributionImpl extends ContributionStub implements GraphContribution { + + final private ResourceQuery> childQuery; + final private Procedure> childProcedure; + + final protected PrimitiveQueryUpdater updater; + final private NodeContext context; + final private BuiltinKeys.ViewpointContributionKey key; + + /** + * This identity is used to give the back-end graph requests a + * properly unique identity that so that the graph back-end caching + * and graph explorer node context caching work together properly. + * + * Consider having two graph explorer instances that have the same + * configuration (same evaluators) and are showing the same resource from + * the graph database. In this case the requests are actually meant to have + * an identical identity and performing the graph request will simply bind a + * new listener for the one and same request. + * + * @return an additional identity for graph back-end requests to make them + * properly unique + */ + public Object getIdentity() { + return key; + } + + public FinalViewpointContributionImpl(final PrimitiveQueryUpdater updater, NodeContext context, BuiltinKeys.ViewpointContributionKey key) { + + assert updater != null; + assert context != null; + assert key != null; + + this.updater = updater; + this.context = context; + this.key = key; + + this.childQuery = new ResourceQuery>(getIdentity(), context) { + + @Override + public Collection perform(ReadGraph graph) throws DatabaseException { + try { + // Make sure that null is not returned. + Collection result = children(graph, context); + if (result == null) + throw new NullPointerException("LazyContributionImpl.children is not allowed to return null, but " + FinalViewpointContributionImpl.this.getClass() + " just did it"); + return result; + } catch (DatabaseException e) { + throw e; + } catch (Throwable t) { + ErrorLogger.defaultLogError("LazyContributionImpl.childQuery produced unexpected exception.", t); + return ViewpointContribution.NO_CONTRIBUTION; + } + } + + @Override + public String toString() { + return "LazyContributionImpl[" + System.identityHashCode(FinalViewpointContributionImpl.this) + "].childQuery"; + } + + }; + + childProcedure = createProcedure(); + + } + + protected Procedure> createProcedure() { + + return new Procedure>() { + + @Override + public void execute(Collection result) { + replaceChildrenResult(result); + } + + public void exception(Throwable t) { + ErrorLogger.defaultLogError("LazyContributionImpl.childQuery failed, see exception for details.", t); + } + + @Override + public String toString() { + return "LazyContributionImpl[" + System.identityHashCode(FinalViewpointContributionImpl.this) + "].childProcedure"; + } + + }; + + } + + public NodeContext getContext() { + return context; + } + + @Override + public Collection getContribution() { + + //System.out.println("LazyViewpoint2@" + System.identityHashCode(this) + " getChildren() = " + children.length); + + if (children == org.simantics.browsing.ui.content.ViewpointContribution.PENDING_CONTRIBUTION) { + DataSource source = updater.getDataSource(ReadGraph.class); + if (source != null) { + source.schedule(graph -> { + if(childProcedure instanceof Listener) + graph.asyncRequest(childQuery, (Listener>)childProcedure); + else + graph.asyncRequest(childQuery, childProcedure); + }); + } + } + + //System.out.println("LazyViewpoint.getChildren returns " + children); + + return children; + + } + + protected void replaceChildrenResult(Collection result) { + setChildren(updater, result); + updater.scheduleReplace(context, key, this); + } + + /** + * @param + * @param clazz + * @return input of the specified class + * @throws ClassCastException if the input class does not match the + * specified class + * @throws NullPointerException if the input is null + */ + @SuppressWarnings("unchecked") + protected T getInput(Class clazz) throws ClassCastException { + Object o = context.getConstant(BuiltinKeys.INPUT); + if (o == null) + throw new NullPointerException("null input"); +// return clazz.cast(o); + return (T) o; + } + + /** + * @param + * @param clazz + * @return null if input is null or if the class does not match + */ + @SuppressWarnings("unchecked") + protected T tryGetInput(Class clazz) { + Object o = context.getConstant(BuiltinKeys.INPUT); + if (o != null && clazz.isInstance(o)) +// return clazz.cast(o); + return (T) o; + return null; + } + + @Override + public Tester getNodeContextTester() { + return null; + } + +}