1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.diagram.adapter;
14 import gnu.trove.list.array.TIntArrayList;
15 import gnu.trove.map.hash.THashMap;
16 import gnu.trove.procedure.TIntProcedure;
17 import gnu.trove.set.hash.THashSet;
19 import java.util.ArrayList;
21 import java.util.concurrent.atomic.AtomicInteger;
23 import org.simantics.db.AsyncReadGraph;
24 import org.simantics.db.ReadGraph;
25 import org.simantics.db.Resource;
26 import org.simantics.db.common.procedure.adapter.ProcedureAdapter;
27 import org.simantics.db.exception.DatabaseException;
28 import org.simantics.db.procedure.AsyncMultiProcedure;
29 import org.simantics.db.procedure.AsyncProcedure;
30 import org.simantics.diagram.content.ConnectionPartData;
31 import org.simantics.diagram.content.ConnectionPartRequest;
32 import org.simantics.diagram.content.DiagramContents;
33 import org.simantics.diagram.content.EdgeResource;
34 import org.simantics.diagram.content.RouteGraphConnectionPartData;
35 import org.simantics.diagram.content.RouteGraphConnectionPartRequest;
36 import org.simantics.diagram.stubs.DiagramResource;
37 import org.simantics.diagram.synchronization.ErrorHandler;
38 import org.simantics.g2d.canvas.ICanvasContext;
41 * @author Tuukka Lehtonen
43 public class DiagramContentRequest extends BaseRequest<Resource, DiagramContents> {
45 int previousElementCount = 32;
46 ErrorHandler errorHandler;
48 public DiagramContentRequest(ICanvasContext canvas, Resource resource, ErrorHandler errorHandler) {
49 super(canvas, resource);
50 this.errorHandler = errorHandler;
54 public DiagramContents perform(ReadGraph g) throws DatabaseException {
56 final DiagramResource DIA = DiagramResource.getInstance(g);
57 final DiagramContents result = new DiagramContents();
59 result.elements = new ArrayList<Resource>(previousElementCount);
60 result.nodeSet = new THashSet<Resource>();
61 result.connectionSet = new THashSet<Resource>();
62 result.connectionSegments = new THashSet<EdgeResource>();
63 result.branchPoints = new THashSet<Resource>();
64 result.routeGraphConnectionSet = new THashSet<Resource>();
65 result.routeLinks = new THashSet<EdgeResource>();
66 result.routeLines = new THashSet<Resource>();
67 result.routePoints = new THashSet<Resource>();
69 result.partToConnection = new THashMap<Object, Resource>();
71 // These help loading result.elements in the correct order.
72 final AtomicInteger index = new AtomicInteger();
73 final TIntArrayList unrecognizedElementIndices = new TIntArrayList();
75 g.forOrderedSet(data, new AsyncMultiProcedure<Resource>() {
78 public void execute(AsyncReadGraph graph, final Resource component) {
80 // Must add the elements to the result set here in order to
81 // keep their order the same as in the ordered set.
82 final int elementIndex = index.getAndIncrement();
83 result.elements.add(component);
85 graph.forTypes(component, new AsyncProcedure<Set<Resource>>() {
88 public void exception(AsyncReadGraph graph, Throwable t) {
89 if (errorHandler != null)
90 errorHandler.error(t.getMessage(), t);
94 public void execute(AsyncReadGraph graph, Set<Resource> types) {
95 if (types.contains(DIA.Connection)) {
96 if (types.contains(DIA.RouteGraphConnection)) {
97 graph.asyncRequest(new RouteGraphConnectionPartRequest(errorHandler, DIA, component),
98 new ProcedureAdapter<RouteGraphConnectionPartData>() {
100 public void execute(RouteGraphConnectionPartData partData) {
101 synchronized (result) {
102 for (EdgeResource link : partData.links) {
103 result.routeLinks.add(link);
104 result.partToConnection.put(link, component);
105 result.connectionToParts.add(component, link);
107 for (Resource line : partData.routeLines) {
108 result.routeLines.add(line);
109 result.connectionToParts.add(component, line);
110 result.partToConnection.put(line, component);
112 for (Resource point : partData.routePoints) {
113 result.routePoints.add(point);
114 result.connectionToParts.add(component, point);
115 result.partToConnection.put(point, component);
121 synchronized (result.routeGraphConnectionSet) {
122 result.routeGraphConnectionSet.add(component);
125 graph.asyncRequest(new ConnectionPartRequest(errorHandler, DIA, component),
126 new ProcedureAdapter<ConnectionPartData>() {
128 public void execute(ConnectionPartData partData) {
129 synchronized (result) {
130 for (EdgeResource er : partData.edges) {
131 result.connectionSegments.add(er);
132 result.partToConnection.put(er, component);
133 result.connectionToParts.add(component, er);
135 for (Resource bp : partData.branchPoints) {
136 result.branchPoints.add(bp);
137 result.connectionToParts.add(component, bp);
138 result.partToConnection.put(bp, component);
144 synchronized (result.connectionSet) {
145 result.connectionSet.add(component);
149 else if (types.contains(DIA.Element)) {
150 synchronized (result.nodeSet) {
151 result.nodeSet.add(component);
155 synchronized (unrecognizedElementIndices) {
156 // Unrecognized element, mark it to be
157 // removed after everything is processed.
158 unrecognizedElementIndices.add(elementIndex);
168 public void finished(AsyncReadGraph graph) {
169 // Remove elements that were not recognized in descending order.
170 unrecognizedElementIndices.sort();
171 unrecognizedElementIndices.forEachDescending(new TIntProcedure() {
173 public boolean execute(int index) {
174 result.elements.remove(index);
179 // Help successive request executions by remembering the previous
180 // element count. This will relieve some ArrayList reallocation
181 // strain down the road.
182 previousElementCount = result.elements.size();
186 public void exception(AsyncReadGraph graph, Throwable t) {
187 if (errorHandler != null)
188 errorHandler.error(t.getMessage(), t);