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1   package org.codehaus.plexus.resource.loader;
2   
3   /*
4    * The MIT License
5    *
6    * Copyright (c) 2004, The Codehaus
7    *
8    * Permission is hereby granted, free of charge, to any person obtaining a copy of
9    * this software and associated documentation files (the "Software"), to deal in
10   * the Software without restriction, including without limitation the rights to
11   * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
12   * of the Software, and to permit persons to whom the Software is furnished to do
13   * so, subject to the following conditions:
14   *
15   * The above copyright notice and this permission notice shall be included in all
16   * copies or substantial portions of the Software.
17   *
18   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24   * SOFTWARE.
25   */
26  
27  import java.net.URL;
28  
29  import org.codehaus.plexus.resource.PlexusResource;
30  import org.codehaus.plexus.resource.loader.AbstractResourceLoader;
31  import org.codehaus.plexus.resource.loader.ResourceNotFoundException;
32  
33  /**
34   * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
35   * @version $Id$
36   * @plexus.component role-hint="classloader"
37   */
38  public class ThreadContextClasspathResourceLoader
39      extends AbstractResourceLoader
40  {
41  
42      public static final String ID = "classloader";
43  
44      // ----------------------------------------------------------------------
45      // ResourceLoader Implementation
46      // ----------------------------------------------------------------------
47  
48      public PlexusResource getResource( String name )
49          throws ResourceNotFoundException
50      {
51          ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
52  
53          if ( classLoader == null )
54          {
55              throw new ResourceNotFoundException( name );
56          }
57  
58          if ( name != null && name.startsWith( "/" ) )
59          {
60              name = name.substring( 1 );
61          }
62  
63          final URL url = classLoader.getResource( name );
64          if ( url == null )
65          {
66              throw new ResourceNotFoundException( name );
67          }
68  
69          return new URLPlexusResource( url );
70      }
71  }