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 java.util.concurrent.atomic.AtomicInteger;
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16 import org.simantics.db.AsyncReadGraph;
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17 import org.simantics.db.Resource;
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18 import org.simantics.db.common.request.UnaryAsyncRead;
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19 import org.simantics.db.procedure.AsyncProcedure;
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20 import org.simantics.diagram.connection.ConnectionSegmentEnd;
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21 import org.simantics.diagram.connection.ConnectionSegmentType;
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22 import org.simantics.diagram.content.EdgeResource;
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23 import org.simantics.diagram.stubs.DiagramResource;
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26 * @author Antti Villberg
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29 public class ConnectionInfoRequest extends UnaryAsyncRead<EdgeResource, ConnectionInfo> {
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31 static class SingleConnectionInfo {
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32 public Resource connection;
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33 public ConnectionSegmentEnd end;
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36 final DiagramResource dr;
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38 private SingleConnectionInfo first;
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39 private SingleConnectionInfo second;
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41 public ConnectionInfoRequest(DiagramResource dr, EdgeResource resource) {
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46 public void fillPossibleType(AsyncReadGraph graph, Resource resource, final AsyncProcedure<ConnectionInfo> procedure, final ConnectionInfo result) {
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47 if (resource == null) {
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48 procedure.execute(graph, result);
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50 graph.forSingleType(resource, dr.Connection, new AsyncProcedure<Resource>() {
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52 public void exception(AsyncReadGraph graph, Throwable throwable) {
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53 procedure.exception(graph, throwable);
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57 public void execute(AsyncReadGraph graph, Resource type) {
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58 result.connectionType = type;
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59 procedure.execute(graph, result);
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65 ConnectionInfo createConnectionInfo(Resource connection) {
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66 ConnectionInfo info = new ConnectionInfo();
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67 info.connection = connection;
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68 info.firstEnd = first.end;
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69 info.secondEnd = second.end;
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70 info.segmentType = ConnectionSegmentType.toSegmentType(first.end, second.end);
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74 public void isBranchPointOf(AsyncReadGraph graph, Resource resource, final AsyncProcedure<ConnectionInfo> procedure, final SingleConnectionInfo result, final AtomicInteger ready) {
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76 graph.forPossibleObject(resource, dr.IsBranchPointOf, new AsyncProcedure<Resource>() {
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78 public void exception(AsyncReadGraph graph, Throwable throwable) {
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79 procedure.exception(graph, throwable);
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83 public void execute(AsyncReadGraph graph, Resource connection) {
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84 result.end = ConnectionSegmentEnd.BRANCH;
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85 result.connection = connection;
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86 if (ready.decrementAndGet() == 0) {
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87 ConnectionInfo info = createConnectionInfo(connection);
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88 fillPossibleType(graph, connection, procedure, info);
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95 public void isConnectorOf(AsyncReadGraph graph, final Resource resource, final AsyncProcedure<ConnectionInfo> procedure, final SingleConnectionInfo result, final AtomicInteger ready) {
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97 graph.forPossibleObject(resource, dr.IsConnectorOf, new AsyncProcedure<Resource>() {
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99 public void exception(AsyncReadGraph graph, Throwable throwable) {
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100 procedure.exception(graph, throwable);
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104 public void execute(AsyncReadGraph graph, Resource connection) {
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105 if (connection != null) {
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106 result.end = ConnectionSegmentEnd.CONNECTOR;
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107 result.connection = connection;
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108 if (ready.decrementAndGet() == 0) {
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109 ConnectionInfo info = createConnectionInfo(connection);
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110 fillPossibleType(graph, connection, procedure, info);
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113 isBranchPointOf(graph, resource, procedure, result, ready);
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121 public void perform(AsyncReadGraph graph, AsyncProcedure<ConnectionInfo> procedure) {
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122 AtomicInteger ready = new AtomicInteger(2);
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123 first = new SingleConnectionInfo();
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124 second = new SingleConnectionInfo();
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125 isConnectorOf(graph, parameter.first(), procedure, first, ready);
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126 isConnectorOf(graph, parameter.second(), procedure, second, ready);
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