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


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.ClassValue;
27 import org.jboss.reflect.spi.TypeInfo;
28 import org.jboss.util.JBossObject;
29
30 /**
31  * Class 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 ClassValueImpl extends JBossObject implements ClassValue, Serializable JavaDoc
37 {
38    /** serialVersionUID */
39    private static final long serialVersionUID = 3256721801307566649L;
40
41    /** The value */
42    protected String JavaDoc value;
43    
44    /** The type */
45    protected TypeInfo type;
46    
47    /** The hash code */
48    protected int hash = -1;
49
50    /**
51     * Create a new class value
52     */
53    public ClassValueImpl()
54    {
55    }
56
57    /**
58     * Create a new ClassValue.
59     *
60     * @param value the value
61     * @param type the type
62     */
63    public ClassValueImpl(String JavaDoc value, TypeInfo type)
64    {
65       this.value = value;
66       this.type = type;
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 ClassValueImpl)) return false;
84
85       final ClassValueImpl classValue = (ClassValueImpl) o;
86
87       if (!type.equals(classValue.type)) return false;
88       if (!value.equals(classValue.value)) return false;
89
90       return true;
91    }
92
93    public int hashCode() { return hash; }
94
95    /**
96     * Calculate the hash code
97     */
98    protected void calculateHash()
99    {
100       int result;
101       result = (value != null) ? value.hashCode() : 0;
102       result = 29 * result + type.hashCode();
103       hash = result;
104    }
105 }
106
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