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.synchronization.graph;
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14 import org.simantics.db.ReadGraph;
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15 import org.simantics.db.WriteGraph;
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16 import org.simantics.diagram.internal.DebugPolicy;
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17 import org.simantics.diagram.synchronization.IModifiableSynchronizationContext;
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18 import org.simantics.diagram.synchronization.IModificationQueue;
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19 import org.simantics.diagram.synchronization.SynchronizationHints;
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20 import org.simantics.utils.datastructures.hints.HintContext;
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21 import org.simantics.utils.datastructures.hints.IHintContext;
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22 import org.simantics.utils.datastructures.hints.IHintContext.Key;
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25 * @author Tuukka Lehtonen
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27 public class GraphSynchronizationContext implements IModifiableSynchronizationContext {
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29 private final IHintContext ctx = new HintContext();
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31 public GraphSynchronizationContext(ReadGraph graph, IModificationQueue modificationQueue) {
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32 ctx.setHint(GraphSynchronizationHints.SESSION, graph.getSession());
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33 ctx.setHint(GraphSynchronizationHints.BASIC_RESOURCES, BasicResources.getInstance(graph));
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34 ctx.setHint(SynchronizationHints.MODIFICATION_QUEUE, modificationQueue);
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37 public static GraphSynchronizationContext getWriteInstance(WriteGraph graph, IModificationQueue modificationQueue) {
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38 GraphSynchronizationContext ctx = new GraphSynchronizationContext(graph, modificationQueue);
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39 ctx.ctx.setHint(GraphSynchronizationHints.READ_TRANSACTION, graph);
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40 ctx.ctx.setHint(GraphSynchronizationHints.WRITE_TRANSACTION, graph);
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45 public <T> T get(Key key) {
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46 return ctx.getHint(key);
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50 public <T> T set(Key key, Object value) {
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51 if (DebugPolicy.DEBUG_SYNC_CONTEXT)
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52 System.out.println(this + ".set(" + key + "): " + value);
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55 return ctx.removeHint(key);
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57 T t = ctx.getHint(key);
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58 ctx.setHint(key, value);
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