001package org.apache.turbine.pipeline; 002 003 004/* 005 * Licensed to the Apache Software Foundation (ASF) under one 006 * or more contributor license agreements. See the NOTICE file 007 * distributed with this work for additional information 008 * regarding copyright ownership. The ASF licenses this file 009 * to you under the Apache License, Version 2.0 (the 010 * "License"); you may not use this file except in compliance 011 * with the License. You may obtain a copy of the License at 012 * 013 * http://www.apache.org/licenses/LICENSE-2.0 014 * 015 * Unless required by applicable law or agreed to in writing, 016 * software distributed under the License is distributed on an 017 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 018 * KIND, either express or implied. See the License for the 019 * specific language governing permissions and limitations 020 * under the License. 021 */ 022 023 024import java.io.IOException; 025 026import org.apache.turbine.TurbineConstants; 027import org.apache.turbine.util.RunData; 028import org.apache.turbine.util.TurbineException; 029 030/** 031 * Implements the RunData target portion of the "Turbine classic" 032 * processing pipeline (from the Turbine 2.x series). 033 * 034 * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a> 035 * @author <a href="mailto:jon@latchkey.com">Jon S. Stevens</a> 036 * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a> 037 * @author <a href="mailto:mikeh@apache.org">Mike Haberman</a> 038 * @author <a href="mailto:james@jamestaylor.org">James Taylor</a> 039 * @author <a href="mailto:mpoeschl@marmot.at">Martin Poeschl</a> 040 * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a> 041 * @version $Id$ 042 */ 043public class CleanUpValve 044 implements Valve 045{ 046 /** 047 * Creates a new instance. 048 */ 049 public CleanUpValve() 050 { 051 // empty constructor 052 } 053 054 /** 055 * @see org.apache.turbine.pipeline.Valve#invoke(PipelineData, ValveContext) 056 */ 057 @Override 058 public void invoke(PipelineData pipelineData, ValveContext context) 059 throws IOException, TurbineException 060 { 061 try 062 { 063 cleanUp(pipelineData); 064 } 065 catch (Exception e) 066 { 067 throw new TurbineException(e); 068 } 069 070 // Pass control to the next Valve in the Pipeline 071 context.invokeNext(pipelineData); 072 } 073 074 /** 075 * Perform clean up after processing the request. 076 * 077 * @param pipelineData The run-time data. 078 */ 079 protected void cleanUp(PipelineData pipelineData) 080 { 081 RunData data = pipelineData.getRunData(); 082 // If a module has set data.acl = null, remove acl from 083 // the session. 084 if (data.getACL() == null) 085 { 086 try 087 { 088 data.getSession().removeAttribute 089 (TurbineConstants.ACL_SESSION_KEY); 090 } 091 catch (IllegalStateException invalidatedSession) 092 { 093 // Web was used to shut us down. Trying to clean up 094 // our stuff, but it's already been done for us. 095 } 096 } 097 } 098}