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[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / request / PossibleProperty.java
1 /*******************************************************************************\r
2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
3  * in Industry THTH ry.\r
4  * All rights reserved. This program and the accompanying materials\r
5  * are made available under the terms of the Eclipse Public License v1.0\r
6  * which accompanies this distribution, and is available at\r
7  * http://www.eclipse.org/legal/epl-v10.html\r
8  *\r
9  * Contributors:\r
10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
11  *******************************************************************************/\r
12 package org.simantics.db.common.request;\r
13 \r
14 import java.util.Map;\r
15 \r
16 import org.simantics.db.ReadGraph;\r
17 import org.simantics.db.Resource;\r
18 import org.simantics.db.exception.DatabaseException;\r
19 \r
20 final public class PossibleProperty extends BinaryRead<Resource, String, Resource> {\r
21 \r
22     public PossibleProperty(Resource resource, String name) {\r
23         super(resource, name);\r
24     }\r
25 \r
26     @Override\r
27     public Resource perform(ReadGraph graph) throws DatabaseException {\r
28         Map<String, Resource> propertyMap = graph.syncRequest(new PropertyMapOfResource(parameter));\r
29         Resource property = propertyMap.get(parameter2);\r
30         if(property == null) return null;\r
31         return graph.getPossibleObject(parameter, property);\r
32     }\r
33 \r
34 }\r