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A Struts2 plugin for leveraging conversation scopes in Struts2

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/*******************************************************************************
 * 
 *  Struts2-Conversation-Plugin - An Open Source Conversation- and Flow-Scope Solution for Struts2-based Applications
 *  =================================================================================================================
 * 
 *  Copyright (C) 2012 by Rees Byars
 *  http://code.google.com/p/struts2-conversation/
 * 
 * **********************************************************************************************************************
 * 
 *  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.
 * 
 * **********************************************************************************************************************
 * 
 *  $Id: ConversationScope.java reesbyars $
 ******************************************************************************/
package com.google.code.rees.scope.spring;

import org.springframework.beans.factory.ObjectFactory;
import org.springframework.beans.factory.config.Scope;

import com.google.code.rees.scope.conversation.ConversationUtil;

/**
 * This custom scope must be configured in a Spring XML context.
 * It allows for conversation-scoped beans to be injected by the Spring IoC.
 * 
 * @author rees.byars
 */
public class ConversationScope implements Scope {

    @Override
    public Object get(String name, ObjectFactory objectFactory) {
        Object object = ConversationUtil.getField(name);
        if (object == null) {
            object = objectFactory.getObject();
            ConversationUtil.setField(name, object);
        }
        return object;
    }

    @Override
    public String getConversationId() {
        return null;
    }

    @Override
    public void registerDestructionCallback(String name, Runnable destructionCallback) {
    }

    @Override
    public Object remove(String name) {
        return null;
    }

    @Override
    public Object resolveContextualObject(String name) {
        return null;
    }

}