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