CommandCache


1   /*
2    * $Id: CommandCache.java,v 1.2 2002/02/15 23:44:28 skavish Exp $
3    *
4    * ==========================================================================
5    *
6    * The JGenerator Software License, Version 1.0
7    *
8    * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
9    *
10   * Redistribution and use in source and binary forms, with or without
11   * modification, are permitted provided that the following conditions are met:
12   *
13   * 1. Redistributions of source code must retain the above copyright
14   *    notice, this list of conditions and the following disclaimer.
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16   * 2. Redistributions in binary form must reproduce the above copyright
17   *    notice, this list of conditions and the following disclaimer in
18   *    the documentation and/or other materials provided with the
19   *    distribution.
20   *
21   * 3. The end-user documentation included with the redistribution, if
22   *    any, must include the following acknowlegement:
23   *    "This product includes software developed by Dmitry Skavish
24   *     (skavish@usa.net, http://www.flashgap.com/)."
25   *    Alternately, this acknowlegement may appear in the software itself,
26   *    if and wherever such third-party acknowlegements normally appear.
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30   *    For written permission, please contact skavish@usa.net.
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50  
51  package org.openlaszlo.iv.flash.cache;
52  
53  import org.openlaszlo.iv.flash.api.*;
54  import java.util.*;
55  
56  public final class CommandCache {
57  
58      private static Hashtable cache = new Hashtable();
59  
60      public static synchronized Class   getCommandClass( String   className ) {
61          Class   clazz = (Class  ) cache.get(className);
62          if( clazz != null && clazz != Class  .class ) return clazz;
63          if( clazz == null ) {
64              try {
65                  clazz = Class.forName(className);
66                  cache.put(className, clazz);
67              } catch( Exception   e ) {
68                  cache.put(className, Class  .class);
69              }
70              return clazz;
71          } else {
72              return null;
73          }
74      }
75  
76  }
77
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