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Java > Open Source Codes > org > jboss > axis > utils > cache > JavaClass


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 2001-2003 The Apache Software Foundation. All rights
6  * reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by the
23  * Apache Software Foundation (http://www.apache.org/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. The names "Axis" and "Apache Software Foundation" must
28  * not be used to endorse or promote products derived from this
29  * software without prior written permission. For written
30  * permission, please contact apache@apache.org.
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32  * 5. Products derived from this software may not be called "Apache",
33  * nor may "Apache" appear in their name, without prior written
34  * permission of the Apache Software Foundation.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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47  * SUCH DAMAGE.
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50  * This software consists of voluntary contributions made by many
51  * individuals on behalf of the Apache Software Foundation. For more
52  * information on the Apache Software Foundation, please see
53  * <http://www.apache.org/>.
54  */

55
56 package org.jboss.axis.utils.cache;
57
58 import java.lang.reflect.Method JavaDoc;
59 import java.util.Hashtable JavaDoc;
60
61 /**
62  * A simple cache of previously loaded classes, and their methods.
63  *
64  * @author Sam Ruby <rubys@us.ibm.com>
65  */

66 public class JavaClass
67 {
68
69    private static Hashtable JavaDoc classes = new Hashtable JavaDoc();
70    private Hashtable JavaDoc methods = new Hashtable JavaDoc();
71
72    private Class JavaDoc jc;
73
74    /**
75     * Find (or create if necessary) a JavaClass associated with a given
76     * class
77     */

78    public static synchronized JavaClass find(Class JavaDoc jc)
79    {
80       JavaClass result = (JavaClass)classes.get(jc);
81
82       if (result == null)
83       {
84          result = new JavaClass(jc);
85          classes.put(jc, result);
86       }
87
88       return result;
89    }
90
91    /**
92     * Create a cache entry for this java.lang.Class
93     */

94    public JavaClass(Class JavaDoc jc)
95    {
96       this.jc = jc;
97       classes.put(jc, this);
98    }
99
100    /**
101     * Return the java.lang.Class associated with this entry
102     */

103    public Class JavaDoc getJavaClass()
104    {
105       return jc;
106    }
107
108    /**
109     * Lookup a method based on name. This method returns an array just in
110     * case there is more than one.
111     *
112     * @param name name of method
113     */

114    public Method JavaDoc[] getMethod(String JavaDoc name)
115    {
116       JavaMethod jm = (JavaMethod)methods.get(name);
117
118       if (jm == null)
119       {
120          methods.put(name, jm = new JavaMethod(jc, name));
121       }
122
123       return jm.getMethod();
124    }
125 }
126
127 ;
128
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