/*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  *   http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 package org.apache.myfaces.shared.util;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.ObjectInputStream;

 import java.io.ObjectStreamClass;

 import java.lang.reflect.Proxy;

 /**

  * Tried to deploy v0.4.2 on JBoss 3.2.1 and had a classloading problem again.

  * The problem seemed to be with JspInfo, line 98. We are using an

  * ObjectInputStream Class, which then cannot find the classes to deserialize

  * the input stream.  The solution appears to be to subclass ObjectInputStream

  * (eg. CustomInputStream), and specify a different class-loading mechanism.

  */

 public class MyFacesObjectInputStream

     extends ObjectInputStream

 {

     public MyFacesObjectInputStream(InputStream in) throws IOException

     {

         super(in);

     }

     protected Class resolveClass(ObjectStreamClass desc)

         throws ClassNotFoundException, IOException

     {

         try

         {

             return ClassUtils.classForName(desc.getName());

         }

         catch (ClassNotFoundException e)

         {

             return super.resolveClass(desc);

         }

     }

     protected Class resolveProxyClass(String[] interfaces) 

             throws IOException, ClassNotFoundException

     {

         // Only option that would match the current code would be to

         // expand ClassLoaderExtension to handle 'getProxyClass', which

         // would break all existing ClassLoaderExtension implementations

         Class[] cinterfaces = new Class[interfaces.length];

         for (int i = 0; i < interfaces.length; i++)

         {

             cinterfaces[i] = ClassUtils.classForName(interfaces[i]);

         }

         try

         {

             // Try WebApp ClassLoader first

             return Proxy.getProxyClass(ClassUtils.getContextClassLoader(), cinterfaces);

         }

         catch (Exception ex)

         {

             // fallback: Try ClassLoader for MyFacesObjectInputStream (i.e. the myfaces.jar lib)

             try

             {

                 return Proxy.getProxyClass(

                         MyFacesObjectInputStream.class.getClassLoader(), cinterfaces);

             }

             catch (IllegalArgumentException e)

             {

                 throw new ClassNotFoundException(e.toString(), e);

             }

         }

     }

 }