bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/PropertyModification.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 java.util.Arrays;\r
  15 \r
  16 import org.simantics.databoard.binding.Binding;\r
  17 import org.simantics.db.Resource;\r
  18 import org.simantics.db.WriteGraph;\r
  19 import org.simantics.db.common.CommentMetadata;\r
  20 import org.simantics.db.common.utils.NameUtils;\r
  21 import org.simantics.db.exception.DatabaseException;\r
  22 import org.simantics.diagram.synchronization.ModificationAdapter;\r
  23 \r
  24 /**\r
  25  * @author Tuukka Lehtonen\r
  26  */\r
  27 public class PropertyModification extends ModificationAdapter {\r
  28     private final Resource owner;\r
  29     private final Resource relation;\r
  30     private final Resource type;\r
  31     private final Object value;\r
  32     private final Binding binding;\r
  33 \r
  34     public PropertyModification(Resource propertyOwner, Resource propertyRelation, Resource propertyType, Object value, Binding binding) {\r
  35         super(LOW_PRIORITY);\r
  36         this.owner = propertyOwner;\r
  37         this.relation = propertyRelation;\r
  38         this.type = propertyType;\r
  39         this.value = value;\r
  40         this.binding = binding;\r
  41     }\r
  42     \r
  43         private final boolean arrayEquals(Object av1, Object av2) {\r
  44                 if (av2 == null)\r
  45                         return false;\r
  46                 Class<?> c1 = av1.getClass().getComponentType();\r
  47                 Class<?> c2 = av2.getClass().getComponentType();\r
  48                 if (c2 == null || !c1.equals(c2))\r
  49                         return false;\r
  50                 boolean p1 = c1.isPrimitive();\r
  51                 boolean p2 = c2.isPrimitive();\r
  52                 if (p1 != p2)\r
  53                         return false;\r
  54                 if (!p1)\r
  55                         return Arrays.equals((Object[]) av1, (Object[]) av2);\r
  56                 if (boolean.class.equals(c1))\r
  57                         return Arrays.equals((boolean[]) av1, (boolean[]) av2);\r
  58                 else if (byte.class.equals(c1))\r
  59                         return Arrays.equals((byte[]) av1, (byte[]) av2);\r
  60                 else if (int.class.equals(c1))\r
  61                         return Arrays.equals((int[]) av1, (int[]) av2);\r
  62                 else if (long.class.equals(c1))\r
  63                         return Arrays.equals((long[]) av1, (long[]) av2);\r
  64                 else if (float.class.equals(c1))\r
  65                         return Arrays.equals((float[]) av1, (float[]) av2);\r
  66                 else if (double.class.equals(c1))\r
  67                         return Arrays.equals((double[]) av1, (double[]) av2);\r
  68                 throw new RuntimeException("??? Contact application querySupport.");\r
  69         }\r
  70 \r
  71     private boolean sameValue(Object oldValue, Object newValue) {\r
  72                 if (newValue.getClass().isArray()) {\r
  73                         return arrayEquals(newValue, oldValue);\r
  74                 } else {\r
  75                         return newValue.equals(oldValue);\r
  76                 }\r
  77     }\r
  78 \r
  79     @Override\r
  80     public void perform(WriteGraph g) throws DatabaseException {\r
  81         \r
  82         Object existing = g.getPossibleRelatedValue(owner, relation, binding);\r
  83         if(!sameValue(existing, value)) {\r
  84                 g.markUndoPoint();\r
  85             DiagramGraphUtil.setRelatedValue(g, owner, relation, type, value, binding);\r
  86                 // Add comment to change set.\r
  87                 CommentMetadata cm = g.getMetadata(CommentMetadata.class);\r
  88                 g.addMetadata(cm.add("Changed property " + NameUtils.getSafeName(g, relation)));\r
  89         }\r
  90 \r
  91     }\r
  92 }