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/*
* File: ClassLoaderAwareObjectInputStream.java
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* The contents of this file are subject to the terms and conditions of
* the Common Development and Distribution License 1.0 (the "License").
*
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the License by consulting the LICENSE.txt file
* distributed with this file, or by consulting https://oss.oracle.com/licenses/CDDL
*
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file LICENSE.txt.
*
* MODIFICATIONS:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
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*/
package com.oracle.bedrock.runtime.java.io;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectStreamClass;
/**
* A {@link ClassLoaderAwareObjectInputStream} is a specialized {@link ObjectInputStream}
* that attempts to resolve deserialized {@link Class}es using a specific {@link ClassLoader}
* and should that fail it uses the regular {@link ObjectInputStream} serializer.
*
* Copyright (c) 2013. All Rights Reserved. Oracle Corporation.
* Oracle is a registered trademark of Oracle Corporation and/or its affiliates.
*
* @author Brian Oliver
*/
public class ClassLoaderAwareObjectInputStream extends ObjectInputStream
{
/**
* The {@link ClassLoader} to use for resolving deserialized classes.
*/
protected ClassLoader classLoader;
/**
* Construct a {@link ClassLoaderAwareObjectInputStream} that allows
* resolving classes using a specific {@link ClassLoader}.
*
* @param classLoader the {@link ClassLoader} to use when resolving classes
* @param inputStream the {@link InputStream} to adapt into an {@link ObjectInputStream}
*
* @throws IOException if the {@link ObjectInputStream} could not be established
*/
public ClassLoaderAwareObjectInputStream(ClassLoader classLoader,
InputStream inputStream) throws IOException
{
super(inputStream);
this.classLoader = classLoader;
}
/**
* {@inheritDoc}
*/
@Override
protected Class resolveClass(ObjectStreamClass objectStreamClass) throws IOException, ClassNotFoundException
{
try
{
return classLoader.loadClass(objectStreamClass.getName());
}
catch (Exception e)
{
return super.resolveClass(objectStreamClass);
}
}
}