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