]> gerrit.simantics Code Review - simantics/platform.git/blob - bundles/org.simantics.db.common/src/org/simantics/db/common/request/PossibleProperty.java
Fixed multiple issues causing dangling references to discarded queries
[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / request / PossibleProperty.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.db.common.request;
13
14 import java.util.Map;
15
16 import org.simantics.db.ReadGraph;
17 import org.simantics.db.Resource;
18 import org.simantics.db.exception.DatabaseException;
19
20 final public class PossibleProperty extends BinaryRead<Resource, String, Resource> {
21
22     public PossibleProperty(Resource resource, String name) {
23         super(resource, name);
24     }
25
26     @Override
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);
32     }
33
34 }