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.db.common.request;
16 import org.simantics.db.ReadGraph;
17 import org.simantics.db.Resource;
18 import org.simantics.db.exception.DatabaseException;
20 final public class PossibleProperty extends BinaryRead<Resource, String, Resource> {
22 public PossibleProperty(Resource resource, String name) {
23 super(resource, name);
27 public Resource perform(ReadGraph graph) throws DatabaseException {
28 Map<String, Resource> propertyMap = graph.syncRequest(new PropertyMapOfResource(parameter));
29 Resource property = propertyMap.get(parameter2);
30 if(property == null) return null;
31 return graph.getPossibleObject(parameter, property);