bundles/org.simantics.modeling/src/org/simantics/modeling/typicals/rules/InstanceOfRule.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2013 Association for Decentralized Information Management in\r
   3  * 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  *     Semantum Oy - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.modeling.typicals.rules;\r
  13 \r
  14 import java.util.Collection;\r
  15 \r
  16 import org.simantics.db.Resource;\r
  17 import org.simantics.db.WriteGraph;\r
  18 import org.simantics.db.common.utils.NameUtils;\r
  19 import org.simantics.db.exception.DatabaseException;\r
  20 import org.simantics.layer0.Layer0;\r
  21 import org.simantics.modeling.typicals.ITypicalSynchronizationRule;\r
  22 import org.simantics.modeling.typicals.TypicalInfo;\r
  23 \r
  24 /**\r
  25  * Synchronizes L0.InstanceOf relations from template to instance.\r
  26  * \r
  27  * @author Tuukka Lehtonen\r
  28  */\r
  29 public enum InstanceOfRule implements ITypicalSynchronizationRule {\r
  30 \r
  31     INSTANCE;\r
  32 \r
  33     public static InstanceOfRule getInstance() {\r
  34         return INSTANCE;\r
  35     }\r
  36 \r
  37     @Override\r
  38     public boolean synchronize(WriteGraph graph, Resource template, Resource instance, TypicalInfo info) throws DatabaseException {\r
  39         boolean changed = false;\r
  40         Layer0 L0 = Layer0.getInstance(graph);\r
  41         Collection<Resource> templateInstanceOf = graph.getObjects(template, L0.InstanceOf);\r
  42         Collection<Resource> instanceInstanceOf = graph.getObjects(instance, L0.InstanceOf);\r
  43 \r
  44         for (Resource instanceOf : templateInstanceOf) {\r
  45             if (!graph.hasStatement(instance, L0.InstanceOf, instanceOf)) {\r
  46                 graph.claim(instance, L0.InstanceOf, instanceOf);\r
  47                 info.messageLog.add("\t\t\tadd type  " + NameUtils.getSafeName(graph, instanceOf));\r
  48                 changed = true;\r
  49             }\r
  50         }\r
  51         for (Resource instanceOf : instanceInstanceOf) {\r
  52             if (!templateInstanceOf.contains(instanceOf) && graph.hasStatement(instance, L0.InstanceOf, instanceOf)) {\r
  53                 graph.deny(instance, L0.InstanceOf, instanceOf);\r
  54                 info.messageLog.add("\t\t\tremove type " + NameUtils.getSafeName(graph, instanceOf));\r
  55                 changed = true;\r
  56             }\r
  57         }\r
  58 \r
  59         return changed;\r
  60     }\r
  61 \r
  62 }\r