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[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / request / EnumerationMap.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.HashMap;\r
15 import java.util.Map;\r
16 \r
17 import org.simantics.db.ReadGraph;\r
18 import org.simantics.db.Resource;\r
19 import org.simantics.db.exception.DatabaseException;\r
20 import org.simantics.layer0.Layer0;\r
21 \r
22 public class EnumerationMap extends ResourceRead<Map<String, Resource>> {\r
23 \r
24         public EnumerationMap(Resource type) {\r
25                 super(type);\r
26         }\r
27 \r
28         @Override\r
29         public Map<String, Resource> perform(ReadGraph graph) throws DatabaseException {\r
30 \r
31                 Layer0 L0 = Layer0.getInstance(graph);\r
32                 Map<String, Resource> result = new HashMap<String, Resource>();\r
33                 for(Resource lit : graph.syncRequest(new ObjectsWithType(resource, L0.ConsistsOf, resource))) {\r
34                         String label = graph.getPossibleRelatedValue(lit, L0.HasLabel);\r
35                         if(label == null) label = graph.getRelatedValue(lit, L0.HasName);\r
36                         result.put(label, lit);\r
37                 }\r
38                 return result;\r
39 \r
40         }\r
41 \r
42 }\r