package org.apache.ojb.broker.core.proxy;

 /* Copyright 2002-2005 The Apache Software Foundation

  *

  * Licensed 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.

  */

 import java.io.ObjectStreamException;

 import java.io.Serializable;

 import org.apache.ojb.broker.util.logging.Logger;

 import org.apache.ojb.broker.util.logging.LoggerFactory;

 /**

  * @author andrew.clute

  * Simple class that is serializable, and containes references to an IndirectionHandler

  * and the base class. When the object is unserialized, it then generates a new Proxy 

  * back in it's place.

  *

  */

 public class OJBSerializableProxy implements Serializable

 {

         private static final long serialVersionUID = 568312334450175549L;

         private Logger logger = LoggerFactory.getLogger(OJBSerializableProxy.class);

         private Class classObject;

         private IndirectionHandler indirectionHandler;

         public OJBSerializableProxy(Class proxyClass, IndirectionHandler indirectionHandler)

         {

                 this.classObject = proxyClass;

                 this.indirectionHandler = indirectionHandler;

         }

         private Object readResolve() throws ObjectStreamException

         {

                 try

                 {

                         return ProxyHelper.getProxyFactory().createProxy(classObject, indirectionHandler);

                 } catch (Throwable e)

                 {

                         //Fail gracefully -- there a bunch of reasons why we cannot create the Proxy, and

                         //so we just want to put a null into the reference.

                         logger.warn("Unable to create a new Proxy of type '" + classObject.getName() + "' due to a '" + e.getClass().getName() + "'.");

                         return null;

                 }

         }

 }