org.opensprout.osaf.web.interceptor.SessionAttributeNameInterceptor.java Source code

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Here is the source code for org.opensprout.osaf.web.interceptor.SessionAttributeNameInterceptor.java

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/**
 * Copyright (c) 2008 OpenSprout Team.
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 */
package org.opensprout.osaf.web.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

/**
 * OSAF controller uses @SessionAttribute name "model" to indicate various models. 
 * So we need to distinct them with this inteceptor that add prefix to session attribute name.
 * This class add session attribute prefix to request and remove after handle thar request.
 * @author Whiteship
 * @see org.opensprout.osaf.web.session.PrefixedSessionAttributeStore
 * @see http://whiteship.me/1644
 */
public class SessionAttributeNameInterceptor extends HandlerInterceptorAdapter {

    public static final String SESSION_ATTR_PREFIX = "sessionAttrPrefix";

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {
        request.setAttribute(SESSION_ATTR_PREFIX, request.getRequestURI());
        return super.preHandle(request, response, handler);
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
            ModelAndView modelAndView) throws Exception {
        //release
        request.removeAttribute(SESSION_ATTR_PREFIX);
        super.postHandle(request, response, handler, modelAndView);
    }

}