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