1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.diagram.adapter;
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14 import org.simantics.db.AsyncReadGraph;
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15 import org.simantics.db.common.procedure.adapter.ListenerSupport;
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16 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
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17 import org.simantics.db.procedure.AsyncProcedure;
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18 import org.simantics.diagram.content.EdgeResource;
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19 import org.simantics.diagram.stubs.DiagramResource;
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20 import org.simantics.diagram.synchronization.ErrorHandler;
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21 import org.simantics.g2d.canvas.ICanvasContext;
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22 import org.simantics.g2d.diagram.IDiagram;
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23 import org.simantics.g2d.element.ElementClass;
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24 import org.simantics.g2d.element.ElementHints;
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25 import org.simantics.g2d.element.IElement;
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26 import org.simantics.g2d.element.impl.Element;
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29 * @author Antti Villberg
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31 public class EdgeRequest extends BaseRequest2<EdgeResource, IElement> {
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33 final ErrorHandler errorHandler;
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34 final ListenerSupport listenerSupport;
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35 final IDiagram diagram;
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36 final ConnectionSegmentAdapter adapter;
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38 public EdgeRequest(ICanvasContext canvas, ErrorHandler errorHandler, ListenerSupport listenerSupport, IDiagram diagram, ConnectionSegmentAdapter adapter, EdgeResource resource) {
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39 super(canvas, resource);
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41 assert(adapter != null);
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43 this.errorHandler = errorHandler;
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44 this.listenerSupport = listenerSupport;
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45 this.diagram = diagram;
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46 this.adapter = adapter;
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50 public void perform(AsyncReadGraph graph, final AsyncProcedure<IElement> procedure) {
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51 // final ITask task = ThreadLogger.getInstance().begin("NodeRequest2 " + data.getResourceId());
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52 final DiagramResource dr = graph.getService(DiagramResource.class);
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54 graph.forHasStatement(data.first(), new AsyncProcedure<Boolean>() {
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57 public void exception(AsyncReadGraph graph, Throwable throwable) {
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58 procedure.exception(graph, throwable);
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62 public void execute(AsyncReadGraph graph, Boolean result) {
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64 procedure.execute(graph, null);
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68 graph.asyncRequest(new ConnectionInfoRequest(dr, data), new TransientCacheAsyncListener<ConnectionInfo>() {
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71 public void exception(AsyncReadGraph graph, Throwable throwable) {
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72 errorHandler.error("ConnectionInfoRequest failure", throwable);
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76 public void execute(AsyncReadGraph graph, final ConnectionInfo info) {
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77 adapter.getClass(graph, data, info, listenerSupport, canvas, diagram, new AsyncProcedure<ElementClass>() {
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79 public void exception(AsyncReadGraph graph, Throwable throwable) {
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80 errorHandler.error("ConnectionSegmentAdapter(" + adapter + ").getClass failure", throwable);
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84 public void execute(AsyncReadGraph graph, final ElementClass clazz) {
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85 if (clazz == null) {
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86 procedure.execute(graph, null);
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90 // final ITask task = ThreadLogger.getInstance().begin("SpawnEdge");
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91 graph.asyncRequest(new SpawnEdgeRequest(canvas, clazz, data), new AsyncProcedure<IElement>() {
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93 public void exception(AsyncReadGraph graph, Throwable throwable) {
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94 errorHandler.error("SpawnEdgeRequest failure", throwable);
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98 public void execute(AsyncReadGraph graph, IElement element) {
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100 // Tell the procedure to use this element
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101 procedure.execute(graph, element);
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103 // Create a separate element for
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104 // loading the edge which
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105 // will then be updated into
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106 // element by the listener in
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107 // the connection segment adapter.
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108 IElement loadingElement = Element.spawnNew(clazz);
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109 loadingElement.setHint(ElementHints.KEY_OBJECT, data);
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111 adapter.load(graph, data, info, listenerSupport, canvas, diagram, loadingElement);
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