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Java > Open Source Codes > com > sslexplorer > applications > server > ByteArrayClassLoader


1 /*
2  * SSL-Explorer
3  *
4  * Copyright (C) 2003-2006 3SP LTD. All Rights Reserved
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2 of
9  * the License, or (at your option) any later version.
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public
16  * License along with this program; if not, write to the Free Software
17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18  */
19             
20 package com.sslexplorer.applications.server;
21
22 import java.util.Hashtable JavaDoc;
23
24 public class ByteArrayClassLoader
25     extends ClassLoader JavaDoc {
26
27   static ByteArrayClassLoader instance;
28
29   Hashtable JavaDoc classes = new Hashtable JavaDoc();
30   ClassLoader JavaDoc parent;
31
32   public ByteArrayClassLoader(ClassLoader JavaDoc parent) {
33     this.parent = parent;
34   }
35
36   public Class JavaDoc createFromByteArray(String JavaDoc name, byte[] buf, int off, int len) {
37
38     if(!classes.containsKey(name)) {
39       classes.put(name, defineClass(name, buf, off, len));
40     }
41     return (Class JavaDoc) classes.get(name);
42
43   }
44
45   public Class JavaDoc loadClass(String JavaDoc name, boolean resolve) throws ClassNotFoundException JavaDoc {
46
47     if(classes.containsKey(name)) {
48       return (Class JavaDoc) classes.get(name);
49     } else
50       return parent.loadClass(name);
51   }
52
53   public static ByteArrayClassLoader getInstance() { return instance==null? instance = new ByteArrayClassLoader(ByteArrayClassLoader.class.getClassLoader()) : instance; }
54 }
55
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