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1   // ========================================================================
2   // Copyright (c) 2009 Intalio, Inc.
3   // ------------------------------------------------------------------------
4   // All rights reserved. This program and the accompanying materials
5   // are made available under the terms of the Eclipse Public License v1.0
6   // and Apache License v2.0 which accompanies this distribution.
7   // The Eclipse Public License is available at 
8   // http://www.eclipse.org/legal/epl-v10.html
9   // The Apache License v2.0 is available at
10  // http://www.opensource.org/licenses/apache2.0.php
11  // You may elect to redistribute this code under either of these licenses. 
12  // Contributors:
13  //    Hugues Malphettes - initial API and implementation
14  // ========================================================================
15  package org.eclipse.jetty.osgi.boot.internal.jsp;
16  
17  import java.net.URL;
18  import java.net.URLClassLoader;
19  
20  /**
21   * Tricky url classloader. In fact we don't want a real URLClassLoader: we want
22   * OSGi to provide its classloader and let it does. But to let
23   * {@link org.apache.jasper.compiler.TldLocationsCache} find the core tlds
24   * inside the jars we must be a URLClassLoader that returns an array of jars
25   * where tlds are stored when the method getURLs is called.
26   */
27  public class TldLocatableURLClassloader extends URLClassLoader
28  {
29  
30      private URL[] _jarsWithTldsInside;
31  
32      public TldLocatableURLClassloader(ClassLoader osgiClassLoader, URL[] jarsWithTldsInside)
33      {
34          super(new URL[] {},osgiClassLoader);
35          _jarsWithTldsInside = jarsWithTldsInside;
36      }
37  
38      /**
39       * @return the jars that contains tlds so that TldLocationsCache or
40       *         TldScanner can find them.
41       */
42      @Override
43      public URL[] getURLs()
44      {
45          return _jarsWithTldsInside;
46      }
47  }