/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.layer0.utils.triggers;

import org.simantics.db.request.Read;


/**
 * A trigger creates a graph modification, when some condition in the 
 * graph is satisfied. It may assume that the graph is not modified 
 * between returning the Modification and performing it. 
 * Thus Modification that is executed should always be (re)queried in
 * write transaction. 
 */
public interface ITrigger extends Read<IModification> {

}