bundles/org.simantics.db.common/src/org/simantics/db/common/request/FunctionalStatementMapOfResource.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 gnu.trove.map.hash.THashMap;
  15
  16 import java.util.Collection;
  17 import java.util.Map;
  18
  19 import org.simantics.databoard.Bindings;
  20 import org.simantics.databoard.util.URIStringUtils;
  21 import org.simantics.db.ReadGraph;
  22 import org.simantics.db.Resource;
  23 import org.simantics.db.exception.DatabaseException;
  24 import org.simantics.layer0.Layer0;
  25
  26 public class FunctionalStatementMapOfResource extends ResourceRead<Map<String, Resource>> {
  27
  28     public FunctionalStatementMapOfResource(Resource resource) {
  29         super(resource);
  30     }
  31
  32     @Override
  33     public Map<String,Resource> perform(ReadGraph graph) throws DatabaseException {
  34
  35         Layer0 L0 = Layer0.getInstance(graph);
  36         Collection<Resource> predicates = graph.getPredicates(resource);
  37         THashMap<String, Resource> result = new THashMap<String, Resource>(predicates.size());
  38         for(Resource predicate : predicates) {
  39             if(graph.isInstanceOf(predicate, L0.FunctionalRelation)) {
  40                 String name = graph.getPossibleRelatedValue(predicate, L0.HasName, Bindings.STRING);
  41                 Resource obj = graph.getSingleObject(resource, predicate);
  42                 if(name != null)
  43                     result.put(name, obj);
  44             }
  45         }
  46         return result;
  47
  48     }
  49
  50 }