01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: *
23: * Free Software Foundation, Inc.
24: * 59 Temple Place, Suite 330
25: * Boston, MA 02111-1307 USA
26: *
27: * @author Scott Ferguson
28: */
29:
30: package com.caucho.bytecode;
31:
32: import com.caucho.loader.EnvironmentLocal;
33:
34: import java.util.logging.Level;
35:
36: /**
37: * Managed introspected java classes.
38: */
39: public class JClassLoaderWrapper extends JClassLoader {
40: private static final EnvironmentLocal<JClassLoaderWrapper> _localClassLoader = new EnvironmentLocal<JClassLoaderWrapper>();
41:
42: private ClassLoader _loader;
43:
44: /**
45: * Creates the class loader with a specific class loader.
46: */
47: private JClassLoaderWrapper(ClassLoader loader) {
48: _loader = loader;
49: }
50:
51: /**
52: * Creates the class loader with the context class loader.
53: */
54: public static JClassLoaderWrapper create() {
55: return create(Thread.currentThread().getContextClassLoader());
56: }
57:
58: /**
59: * Creates the class loader with the context class loader.
60: */
61: public static JClassLoaderWrapper create(ClassLoader loader) {
62: JClassLoaderWrapper jLoader = _localClassLoader
63: .getLevel(loader);
64:
65: if (jLoader == null) {
66: jLoader = new JClassLoaderWrapper(loader);
67: _localClassLoader.set(jLoader, loader);
68: }
69:
70: return jLoader;
71: }
72:
73: /**
74: * Loads the class.
75: */
76: protected JClass loadClass(String name) {
77: try {
78: Class cl;
79:
80: if (_loader != null)
81: cl = Class.forName(name, false, _loader);
82: else
83: cl = Class.forName(name);
84:
85: return new JClassWrapper(cl, this );
86: } catch (ClassNotFoundException e) {
87: log.log(Level.FINE, e.toString(), e);
88:
89: return null;
90: }
91: }
92:
93: public String toString() {
94: return "JClassLoaderWrapper[" + _loader + "]";
95: }
96: }
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