bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/RelatedPropertyModification.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.diagram.synchronization.graph;\r
  13 \r
  14 import org.simantics.databoard.binding.Binding;\r
  15 import org.simantics.db.Resource;\r
  16 import org.simantics.db.WriteGraph;\r
  17 import org.simantics.db.common.CommentMetadata;\r
  18 import org.simantics.db.common.utils.NameUtils;\r
  19 import org.simantics.db.exception.DatabaseException;\r
  20 import org.simantics.diagram.synchronization.ModificationAdapter;\r
  21 \r
  22 /**\r
  23  * @author Tuukka Lehtonen\r
  24  */\r
  25 public class RelatedPropertyModification extends ModificationAdapter {\r
  26     private final Resource subject;\r
  27     private final Resource relation;\r
  28     private final Resource propertyRelation;\r
  29     private final Resource type;\r
  30     private final Object value;\r
  31     private final Binding binding;\r
  32 \r
  33     public RelatedPropertyModification(Resource subject, Resource relation, Resource propertyRelation, Resource propertyType, Object value, Binding binding) {\r
  34         super(LOW_PRIORITY);\r
  35         this.subject = subject;\r
  36         this.relation = relation;\r
  37         this.propertyRelation = propertyRelation;\r
  38         this.type = propertyType;\r
  39         this.value = value;\r
  40         this.binding = binding;\r
  41     }\r
  42 \r
  43     @Override\r
  44     public void perform(WriteGraph g) throws DatabaseException {\r
  45         Resource propertyOwner = g.getPossibleObject(subject, relation);\r
  46         if (propertyOwner != null) {\r
  47                 Object existing = g.getPossibleRelatedValue(propertyOwner, propertyRelation, binding);\r
  48                 if(!value.equals(existing)) {\r
  49                 g.markUndoPoint();\r
  50                         DiagramGraphUtil.setRelatedValue(g, propertyOwner, propertyRelation, type, value, binding);\r
  51                         // Add comment to change set.\r
  52                         CommentMetadata cm = g.getMetadata(CommentMetadata.class);\r
  53                         g.addMetadata(cm.add("Changed property " + NameUtils.getSafeLabel(g, propertyRelation) + " in " + NameUtils.getSafeName(g, propertyOwner)));\r
  54                 }\r
  55         }\r
  56     }\r
  57     \r
  58 }