bundles/org.simantics.db.common/src/org/simantics/db/common/uri/UnescapedChildMapOfResource.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.uri;
  13
  14 import java.util.Collection;
  15 import java.util.Map;
  16
  17 import org.simantics.databoard.Bindings;
  18 import org.simantics.db.ReadGraph;
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.common.request.ResourceRead;
  21 import org.simantics.db.exception.DatabaseException;
  22 import org.simantics.db.service.CollectionSupport;
  23 import org.simantics.layer0.Layer0;
  24 import org.simantics.utils.Development;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public class UnescapedChildMapOfResource extends ResourceRead<Map<String, Resource>> {
  29
  30     private static final Logger LOGGER = LoggerFactory.getLogger(UnescapedChildMapOfResource.class);
  31
  32         public UnescapedChildMapOfResource(Resource resource) {
  33             super(resource);
  34         }
  35
  36         @Override
  37         public Map<String, Resource> perform(ReadGraph graph) throws DatabaseException {
  38             Layer0 L0 = Layer0.getInstance(graph);
  39             Collection<Resource> objects = graph.getObjects(resource, L0.ConsistsOf);
  40             CollectionSupport cs = graph.getService(CollectionSupport.class);
  41             Map<String,Resource> result = cs.createObjectResourceMap(String.class, objects.size());
  42             for(Resource r : objects) {
  43                 String name = graph.getPossibleRelatedValue(r, L0.HasName, Bindings.STRING);
  44                 if(name != null) {
  45                     Resource old = result.put(name, r);
  46                     if (old != null)
  47                         LOGGER.error("The database contains siblings with the same name " + name + " (resource=$" + resource.getResourceId() + ", child=$" + r.getResourceId() + ", previous child=$" + old.getResourceId() + ").");
  48                 } else {
  49                         if(Development.DEVELOPMENT)
  50                             LOGGER.error("The database contains a child with no unique name (resource=$" + resource.getResourceId() + ", child=$" + r.getResourceId() + ").");
  51                 }
  52             }
  53             return result;
  54         }
  55
  56 }