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Java > Open Source Codes > org > jboss > reflect > plugins > EnumValueImpl


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2005, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22 package org.jboss.reflect.plugins;
23
24 import java.io.Serializable JavaDoc;
25
26 import org.jboss.reflect.spi.EnumValue;
27 import org.jboss.reflect.spi.TypeInfo;
28 import org.jboss.util.JBossObject;
29
30 /**
31  * An enumeration value
32  *
33  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
34  * @author <a HREF="mailto:adrian@jboss.org">Adrian Brock</a>
35  */
36 public class EnumValueImpl extends JBossObject implements EnumValue, Serializable JavaDoc
37 {
38    /** serialVersionUID */
39    private static final long serialVersionUID = 4120848858889662517L;
40
41    /** The type */
42    protected TypeInfo type;
43    
44    /** The value */
45    protected String JavaDoc value;
46    
47    /** The hash code */
48    protected int hash = -1;
49
50    /**
51     * Create a new EnumValue.
52     */
53    public EnumValueImpl()
54    {
55    }
56
57    /**
58     * Create a new EnumValue.
59     *
60     * @param type the type
61     * @param value the value
62     */
63    public EnumValueImpl(TypeInfo type, String JavaDoc value)
64    {
65       this.type = type;
66       this.value = value;
67       calculateHash();
68    }
69
70    public String JavaDoc getValue()
71    {
72       return value;
73    }
74
75    public TypeInfo getType()
76    {
77       return type;
78    }
79
80    public boolean equals(Object JavaDoc o)
81    {
82       if (this == o) return true;
83       if (!(o instanceof EnumValueImpl)) return false;
84
85       final EnumValueImpl enumValue = (EnumValueImpl) o;
86
87       if (type != null ? !type.equals(enumValue.type) : enumValue.type != null) return false;
88       if (value != null ? !value.equals(enumValue.value) : enumValue.value != null) return false;
89
90       return true;
91    }
92
93    public int hashCode()
94    {
95       return hash;
96    }
97
98    /**
99     * Calculate the hash code
100     */
101    protected void calculateHash()
102    {
103       int result;
104       result = (type != null ? type.hashCode() : 0);
105       result = 29 * result + (value != null ? value.hashCode() : 0);
106       hash = result;
107    }
108 }
109
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