001/* 002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * bstefanescu 018 */ 019package org.nuxeo.ecm.webengine.jaxrs.tx; 020 021import java.io.IOException; 022 023import javax.servlet.FilterChain; 024import javax.servlet.FilterConfig; 025import javax.servlet.ServletException; 026import javax.servlet.http.HttpServletRequest; 027import javax.servlet.http.HttpServletResponse; 028 029import org.nuxeo.ecm.webengine.jaxrs.HttpFilter; 030import org.nuxeo.runtime.transaction.TransactionHelper; 031 032/** 033 * Filter using the {@link SimpleLoginModule} to authenticate a request. 034 * 035 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 036 */ 037public class TransactionFilter extends HttpFilter { 038 039 @Override 040 public void init(FilterConfig filterConfig) throws ServletException { 041 } 042 043 @Override 044 public void run(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws IOException, 045 ServletException { 046 boolean txStarted = false; 047 if (!TransactionHelper.isTransactionActive()) { 048 if (TransactionHelper.startTransaction()) { 049 txStarted = true; 050 } 051 } 052 try { 053 chain.doFilter(request, response); 054 } finally { 055 if (txStarted) { 056 TransactionHelper.commitOrRollbackTransaction(); 057 } 058 } 059 } 060 061 @Override 062 public void destroy() { 063 } 064 065}