bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/DiagramContentRequest.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2018 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.diagram.adapter;
  13
  14 import java.util.ArrayList;
  15 import java.util.Collection;
  16 import java.util.Set;
  17 import java.util.concurrent.atomic.AtomicInteger;
  18
  19 import org.simantics.db.ReadGraph;
  20 import org.simantics.db.Resource;
  21 import org.simantics.db.common.procedure.adapter.ProcedureAdapter;
  22 import org.simantics.db.common.utils.OrderedSetUtils;
  23 import org.simantics.db.exception.DatabaseException;
  24 import org.simantics.db.request.AsyncRead;
  25 import org.simantics.diagram.content.ConnectionPartData;
  26 import org.simantics.diagram.content.ConnectionPartRequest;
  27 import org.simantics.diagram.content.DiagramContents;
  28 import org.simantics.diagram.content.EdgeResource;
  29 import org.simantics.diagram.content.RouteGraphConnectionPartData;
  30 import org.simantics.diagram.content.RouteGraphConnectionPartRequest;
  31 import org.simantics.diagram.stubs.DiagramResource;
  32 import org.simantics.diagram.synchronization.ErrorHandler;
  33 import org.simantics.g2d.canvas.ICanvasContext;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 import gnu.trove.list.array.TIntArrayList;
  38 import gnu.trove.map.hash.THashMap;
  39 import gnu.trove.procedure.TIntProcedure;
  40 import gnu.trove.set.hash.THashSet;
  41
  42 /**
  43  * @author Tuukka Lehtonen
  44  */
  45 public class DiagramContentRequest extends BaseRequest<Resource, DiagramContents> {
  46
  47     private static final Logger LOGGER = LoggerFactory.getLogger(DiagramContentRequest.class);
  48
  49     int previousElementCount = 32;
  50     ErrorHandler errorHandler;
  51
  52     public DiagramContentRequest(ICanvasContext canvas, Resource resource, ErrorHandler errorHandler) {
  53         super(canvas, resource);
  54         this.errorHandler = errorHandler;
  55     }
  56
  57     @Override
  58     public DiagramContents perform(ReadGraph g) throws DatabaseException {
  59
  60         final DiagramResource DIA = DiagramResource.getInstance(g);
  61
  62         // These help loading result.elements in the correct order.
  63         final AtomicInteger index = new AtomicInteger();
  64         final TIntArrayList unrecognizedElementIndices = new TIntArrayList();
  65
  66         if (!g.hasStatement(data)) {
  67             LOGGER.warn("Most likely diagram is being removed and therefore ordered list can not be found for {}", data);
  68             return new DiagramContents(); // or null, I don't know
  69         }
  70         Collection<Resource> components = OrderedSetUtils.toList(g, data);
  71         DiagramContents res = g.syncRequest((AsyncRead<DiagramContents>)(graph, procedure) -> {
  72
  73             DiagramContents result = new DiagramContents();
  74             procedure.execute(graph, result);
  75
  76             result.elements =   new ArrayList<Resource>(previousElementCount);
  77             result.nodeSet = new THashSet<Resource>();
  78             result.connectionSet = new THashSet<Resource>();
  79             result.connectionSegments = new THashSet<EdgeResource>();
  80             result.branchPoints = new THashSet<Resource>();
  81             result.routeGraphConnectionSet = new THashSet<Resource>();
  82             result.routeLinks = new THashSet<EdgeResource>();
  83             result.routeLines = new THashSet<Resource>();
  84             result.routePoints = new THashSet<Resource>();
  85
  86             result.partToConnection = new THashMap<Object, Resource>();
  87
  88             for (Resource component : components) {
  89
  90                 // Must add the elements to the result set here in order to
  91                 // keep their order the same as in the ordered set.
  92                 final int elementIndex = index.getAndIncrement();
  93                 result.elements.add(component);
  94
  95                 graph.forTypes(component, new ProcedureAdapter<Set<Resource>>() {
  96
  97                     @Override
  98                     public void execute(Set<Resource> types) {
  99
 100                         if (types.contains(DIA.Connection)) {
 101                             if (types.contains(DIA.RouteGraphConnection)) {
 102                                 graph.asyncRequest(
 103                                         new RouteGraphConnectionPartRequest(errorHandler, DIA, component),
 104                                         new ProcedureAdapter<RouteGraphConnectionPartData>() {
 105                                             @Override
 106                                             public void execute(RouteGraphConnectionPartData partData) {
 107                                                 synchronized (result) {
 108                                                     for (EdgeResource link : partData.links) {
 109                                                         result.routeLinks.add(link);
 110                                                         result.partToConnection.put(link, component);
 111                                                         result.connectionToParts.add(component, link);
 112                                                     }
 113                                                     for (Resource line : partData.routeLines) {
 114                                                         result.routeLines.add(line);
 115                                                         result.connectionToParts.add(component, line);
 116                                                         result.partToConnection.put(line, component);
 117                                                     }
 118                                                     for (Resource point : partData.routePoints) {
 119                                                         result.routePoints.add(point);
 120                                                         result.connectionToParts.add(component, point);
 121                                                         result.partToConnection.put(point, component);
 122                                                     }
 123                                                 }
 124                                             }
 125                                         });
 126
 127                                 synchronized (result.routeGraphConnectionSet) {
 128                                     result.routeGraphConnectionSet.add(component);
 129                                 }
 130                             } else {
 131                                 graph.asyncRequest(
 132                                         new ConnectionPartRequest(errorHandler, DIA, component),
 133                                         new ProcedureAdapter<ConnectionPartData>() {
 134                                             @Override
 135                                             public void execute(ConnectionPartData partData) {
 136                                                 synchronized (result) {
 137                                                     for (EdgeResource er : partData.edges) {
 138                                                         result.connectionSegments.add(er);
 139                                                         result.partToConnection.put(er, component);
 140                                                         result.connectionToParts.add(component, er);
 141                                                     }
 142                                                     for (Resource bp : partData.branchPoints) {
 143                                                         result.branchPoints.add(bp);
 144                                                         result.connectionToParts.add(component, bp);
 145                                                         result.partToConnection.put(bp, component);
 146                                                     }
 147                                                 }
 148                                             }
 149                                         });
 150
 151                                 synchronized (result.connectionSet) {
 152                                     result.connectionSet.add(component);
 153                                 }
 154                             }
 155                         }
 156                         else if (types.contains(DIA.Element)) {
 157                             synchronized (result.nodeSet) {
 158                                 result.nodeSet.add(component);
 159                             }
 160                         }
 161                         else {
 162                             synchronized (unrecognizedElementIndices) {
 163                                 // Unrecognized element, mark it to be
 164                                 // removed after everything is processed.
 165                                 unrecognizedElementIndices.add(elementIndex);
 166                             }
 167                         }
 168                     }
 169                 });
 170             }
 171         });
 172
 173         // Remove elements that were not recognized in descending order.
 174         unrecognizedElementIndices.sort();
 175         unrecognizedElementIndices.forEachDescending(new TIntProcedure() {
 176             @Override
 177             public boolean execute(int index) {
 178                 res.elements.remove(index);
 179                 return true;
 180             }
 181         });
 182
 183         // Help successive request executions by remembering the previous
 184         // element count. This will relieve some ArrayList reallocation
 185         // strain down the road.
 186         previousElementCount = res.elements.size();
 187
 188         return res;
 189     }
 190 }