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.db.event;
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14 import org.simantics.db.ReadGraph;
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15 import org.simantics.db.Session;
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16 import org.simantics.db.exception.DatabaseException;
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19 * A listener added to a Session for receiving notifications for completed
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20 * write transactions.
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22 * @see GraphChangeEvent
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25 public interface ChangeListener {
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28 * The listener gets a read lock along with the event (a {@link ReadGraph}
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29 * instance). This method should be implemented so that it never blocks.
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31 * The ChangeSet contained by the received event should only contain the
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32 * changes that intersect with the working set of the listener's Session.
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34 void graphChanged(ChangeEvent e) throws DatabaseException;
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