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