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JSF components and utilities that can be used with any JSF implementation. This library is based on the JSF1.1 version of Tomahawk, but with minor source code and build changes to take advantage of JSF2.1 features. A JSF2.1 implementation is required to use this version of the Tomahawk library.

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/*
 * 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_tomahawk.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.
 *
 * @author Robert Gothan  (latest modification by $Author: lu4242 $)
 * @version $Revision: 1386954 $ $Date: 2012-09-17 20:48:52 -0500 (Mon, 17 Sep 2012) $
 */
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);
            }
        }
    }
}