/*******************************************************************************
*
* 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: ConversationInterceptor.java reesbyars $
******************************************************************************/
package com.google.code.rees.scope.spring;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import com.google.code.rees.scope.conversation.ConversationAdapter;
import com.google.code.rees.scope.conversation.context.ConversationContextManager;
import com.google.code.rees.scope.conversation.context.HttpConversationContextManagerFactory;
import com.google.code.rees.scope.conversation.processing.ConversationManager;
/**
* This Spring MVC interceptor uses a {@link ConversationManager} to
* process conversations before and after controller execution.
*
* @author rees.byars
*/
public class ConversationInterceptor implements HandlerInterceptor {
protected ConversationManager conversationManager;
protected HttpConversationContextManagerFactory conversationContextManagerFactory;
/**
* Set the {@link ConversationManager}
*
* @param conversationManager
*/
public void setConversationManager(ConversationManager conversationManager) {
this.conversationManager = conversationManager;
}
/**
* Set the {@link HttpConversationContextManagerFactory}
*
* @param conversationContextManagerFactory
*/
public void setConversationContextManagerFactory(HttpConversationContextManagerFactory conversationContextManagerFactory) {
this.conversationContextManagerFactory = conversationContextManagerFactory;
}
/**
* Calls {@link ConversationAdapter#executePostProcessors()}
*/
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception exception) throws Exception {
ConversationAdapter.getAdapter().executePostProcessors();
}
/**
* This method not used by the Interceptor
*/
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
// do nothing
}
/**
* Calls
* {@link ConversationManager#processConversations(ConversationAdapter)} and
* passes in a {@link SpringConversationAdapter}.
*/
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
ConversationContextManager contextManager = conversationContextManagerFactory.getManager(request);
ConversationAdapter adapter = new SpringConversationAdapter(request, (HandlerMethod) handler, contextManager);
conversationManager.processConversations(adapter);
return true;
}
}