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[simantics/platform.git] / bundles / org.simantics.project / src / org / simantics / project / features / registry / ProjectFeatureReference.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.project.features.registry;\r
13 \r
14 /**\r
15  * @author Tuukka Lehtonen\r
16  */\r
17 public class ProjectFeatureReference {\r
18 \r
19     public final String  id;\r
20     public final boolean optional;\r
21 \r
22     public ProjectFeatureReference(String id, boolean optional) {\r
23         if (id == null)\r
24             throw new NullPointerException("null project feature id");\r
25         this.id = id;\r
26         this.optional = optional;\r
27     }\r
28 \r
29     @Override\r
30     public String toString() {\r
31         return id + (optional ? "[optional]" : "");\r
32     }\r
33 \r
34     @Override\r
35     public int hashCode() {\r
36         return id.hashCode() * 31 + (optional ? 1 : 0);\r
37     }\r
38 \r
39     @Override\r
40     public boolean equals(Object obj) {\r
41         if (this == obj)\r
42             return true;\r
43         if (obj == null)\r
44             return false;\r
45         if (getClass() != obj.getClass())\r
46             return false;\r
47         ProjectFeatureReference other = (ProjectFeatureReference) obj;\r
48         return id.equals(other.id) && optional == other.optional;\r
49     }\r
50 \r
51 }\r