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[simantics/platform.git] / bundles / org.simantics.mapping / src / org / simantics / mapping / CompositeModification.java
1 /*******************************************************************************
2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
3  * in Industry THTH ry.
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
8  *
9  * Contributors:
10  *     VTT Technical Research Centre of Finland - initial API and implementation
11  *******************************************************************************/
12 package org.simantics.mapping;
13
14 import java.util.Collection;
15
16 import org.simantics.db.WriteGraph;
17 import org.simantics.db.exception.DatabaseException;
18 import org.simantics.layer0.utils.triggers.IModification;
19 import org.simantics.layer0.utils.triggers.ITrigger;
20
21 /**
22  * Composes multiple triggers into one modification that performs
23  * all modifications generated by the triggers.
24  */
25 public class CompositeModification implements IModification {
26         Collection<ITrigger> triggers;
27
28         public CompositeModification(Collection<ITrigger> triggers) {
29                 this.triggers = triggers;
30         }
31
32         @Override
33         public void perform(WriteGraph g) throws DatabaseException {
34                 for(ITrigger trigger : triggers) {
35                         while(true) {
36                                 IModification modi = g.syncRequest(trigger);
37                                 if(modi != null)
38                                         modi.perform(g);
39                                 else
40                                         break;
41                         }
42                 }
43         }
44         
45         
46 }