ResolvingObjectInputStream


1   // Copyright 2004, 2005 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.tapestry.util.io;
16  
17  import java.io.IOException  ;
18  import java.io.InputStream  ;
19  import java.io.ObjectInputStream  ;
20  import java.io.ObjectStreamClass  ;
21  
22  import org.apache.hivemind.ClassResolver;
23  
24  /**
25   * Specialized subclass of {@link java.io.ObjectInputStream}that knows how to resolve classes with
26   * a non-default class loader (represented by an instance of
27   * {@link org.apache.hivemind.ClassResolver}).
28   * 
29   * @author Howard Lewis Ship
30   * @since 3.0
31   */
32  
33  public class ResolvingObjectInputStream extends ObjectInputStream  
34  {
35      private ClassResolver _resolver;
36  
37      public ResolvingObjectInputStream(ClassResolver resolver, InputStream   input) throws IOException  
38      {
39          super(input);
40  
41          _resolver = resolver;
42      }
43  
44      /**
45       * Overrides the default implementation to have the resource resolver find the class.
46       */
47  
48      protected Class   resolveClass(ObjectStreamClass   v) throws IOException  , ClassNotFoundException  
49      {
50          return _resolver.findClass(v.getName());
51      }
52  }

A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame

Popular Tags