/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. The ASF licenses this file to You
* 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. For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
package org.apache.roller.ui.core.filters;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.roller.business.Roller;
import org.apache.roller.business.RollerFactory;
/**
* Sole responsibility is to ensure that each request's Roller
* persistence session is released at end of the request.
*
* @web.filter name="PersistenceSessionFilter"
* @author David M. Johnson
*/
public class PersistenceSessionFilter implements Filter {
private static Log mLogger = LogFactory.getLog(PersistenceSessionFilter.class);
/**
* Release Roller persistence session at end of request processing.
*/
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;
mLogger.debug("Entered PersistenceSessionFilter");
Roller roller = RollerFactory.getRoller();
try {
chain.doFilter(request, response);
} finally {
mLogger.debug("Releasing Roller Session");
roller.release();
}
mLogger.debug("Exiting PersistenceSessionFilter");
}
public void init(FilterConfig filterConfig) throws ServletException {}
public void destroy() {}
}