1 /*
2 * The Apache Software License, Version 1.1
3 *
4 * Copyright (c) 2002 The Apache Software Foundation. All rights
5 * reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. The end-user documentation included with the redistribution,
20 * if any, must include the following acknowledgment:
21 * "This product includes software developed by the
22 * Apache Software Foundation (http://www.apache.org/)."
23 * Alternately, this acknowledgment may appear in the software itself,
24 * if and wherever such third-party acknowledgments normally appear.
25 *
26 * 4. The names "Apache" and "Apache Software Foundation" must
27 * not be used to endorse or promote products derived from this
28 * software without prior written permission. For written
29 * permission, please contact apache@apache.org.
30 *
31 * 5. Products derived from this software may not be called "Apache",
32 * nor may "Apache" appear in their name, without prior written
33 * permission of the Apache Software Foundation.
34 *
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 * ====================================================================
48 *
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation. For more
51 * information on the Apache Software Foundation, please see
52 * <http://www.apache.org/>;.
53 */
54 package net.sf.cglib.core;
55
56 import java.util.Set;
57
58 /***
59 * The default policy used by {@link AbstractClassGenerator}.
60 * Generates names such as
61 * <p><code>net.sf.cglib.Foo$$EnhancerByCGLIB$$38272841</code><p>
62 * This is composed of a prefix based on the name of the superclass, a fixed
63 * string incorporating the CGLIB class responsible for generation, and a
64 * hashcode derived from the parameters used to create the object. If the same
65 * name has been previously been used in the same <code>ClassLoader</code>, a
66 * suffix is added to ensure uniqueness.
67 */
68 public class DefaultNamingPolicy implements NamingPolicy {
69 public static final DefaultNamingPolicy INSTANCE = new DefaultNamingPolicy();
70
71 public String getClassName(String prefix, String source, Object key, Predicate names) {
72
73
74 StringBuffer sb = new StringBuffer();
75 sb.append(
76 (prefix != null) ?
77 (
78 prefix.startsWith("java") ?
79 "$" + prefix : prefix
80 )
81 : "net.sf.cglib.empty.Object"
82 );
83 sb.append("$$");
84 sb.append(source.substring(source.lastIndexOf('.') + 1));
85 sb.append("ByCGLIB$$");
86 sb.append(Integer.toHexString(key.hashCode()));
87 String base = sb.toString();
88 String attempt = base;
89 int index = 2;
90 while (names.evaluate(attempt)) {
91 attempt = base + "-" + index++;
92 }
93
94 return attempt;
95 }
96 }
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