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[simantics/platform.git] / bundles / org.simantics.databoard / src / org / simantics / databoard / annotations / UnionImpl.java
1 /*******************************************************************************\r
2  * Copyright (c) 2007, 2011 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  *     VTT Technical Research Centre of Finland - initial API and implementation\r
11  *******************************************************************************/\r
12 package org.simantics.databoard.annotations;\r
13 \r
14 import java.lang.annotation.Annotation;\r
15 import java.util.Arrays;\r
16 \r
17 public class UnionImpl implements Union {\r
18 \r
19         int hash;\r
20         Class<?>[] args;\r
21         \r
22         public UnionImpl(Class<?>...args) {\r
23         hash = Arrays.hashCode(args);\r
24                 this.args = args;\r
25         }\r
26         \r
27         @Override\r
28         public Class<? extends Annotation> annotationType() {\r
29                 return Union.class;\r
30         }\r
31 \r
32         @Override\r
33         public Class<?>[] value() {\r
34                 return args;\r
35         }\r
36         \r
37         @Override\r
38         public int hashCode() {         \r
39                 return hash;\r
40         }\r
41         \r
42         @Override\r
43         public boolean equals(Object obj) {\r
44                 if ( obj instanceof Union == false ) return false;\r
45                 Union other = (Union) obj;\r
46                 Class<?>[] classArray1 = args;\r
47                 Class<?>[] classArray2 = other.value();\r
48                 \r
49                 return Arrays.deepEquals(classArray1, classArray2);\r
50         }\r
51 }\r