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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.browsing.ui.common.property;\r
13 \r
14 import java.util.Comparator;\r
15 \r
16 /**\r
17  * @author Tuukka Lehtonen\r
18  */\r
19 public class PropertyComparator implements Comparator<PropertyComparable> {\r
20 \r
21     public static final PropertyComparator INSTANCE = new PropertyComparator();\r
22 \r
23     @Override\r
24     public int compare(PropertyComparable o1, PropertyComparable o2) {\r
25         int h1 = o1.propertyHashCode();\r
26         int h2 = o2.propertyHashCode();\r
27         if (h1 != h2) {\r
28             return h1-h2;\r
29         }\r
30         boolean equals = o1.propertyEquals(o2);\r
31         return equals ? 0 : -1;\r
32     }\r
33 \r
34 }