bundles/org.simantics.db.common/src/org/simantics/db/common/request/PropertyMapOfResource.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 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public class PropertyMapOfResource extends ResourceRead<Map<String, Resource>> {
  29
  30     private static final Logger LOGGER = LoggerFactory.getLogger(PropertyMapOfResource.class);
  31
  32         public PropertyMapOfResource(Resource resource) {
  33             super(resource);
  34         }
  35
  36         @Override
  37         public Map<String,Resource> perform(ReadGraph graph) throws DatabaseException {
  38
  39                 Layer0 L0 = Layer0.getInstance(graph);
  40                 Collection<Resource> predicates = graph.getPredicates(resource);
  41         THashMap<String, Resource> result = new THashMap<String, Resource>(predicates.size());
  42                 for(Resource predicate : predicates) {
  43                         if(graph.isSubrelationOf(predicate, L0.HasProperty)) {
  44                         String name = graph.getPossibleRelatedValue(predicate, L0.HasName, Bindings.STRING);
  45                         if(name != null) {
  46                                         String escapedName = URIStringUtils.escape(name);
  47                             if (result.put(escapedName, predicate) != null)
  48                                 LOGGER.error("The database contains siblings with the same name " + name + " (resource=$" + resource.getResourceId() +").");
  49                         }
  50                         }
  51                 }
  52                 return result;
  53
  54         }
  55
  56 }