001 package 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
024 import java.io.IOException;
025
026 import org.apache.turbine.Turbine;
027 import org.apache.turbine.TurbineConstants;
028 import org.apache.turbine.modules.Action;
029 import org.apache.turbine.modules.ActionLoader;
030 import org.apache.turbine.services.assemblerbroker.TurbineAssemblerBroker;
031 import org.apache.turbine.util.TurbineException;
032
033 /**
034 * Implements the action portion of the "Turbine classic" processing
035 * pipeline (from the Turbine 2.x series).
036 *
037 * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
038 * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a>
039 * @version $Id: DefaultACLCreationValve.java 758254 2009-03-25 13:41:02Z tv $
040 */
041 public class DefaultACLCreationValve
042 extends AbstractValve
043 {
044 private ActionLoader actionLoader;
045
046 /**
047 * Here we can setup objects that are thread safe and can be
048 * reused. We setup the session validator and the access
049 * controller.
050 */
051 public DefaultACLCreationValve()
052 throws Exception
053 {
054 // empty constructor
055 }
056
057 /**
058 * Initialize this valve for use in a pipeline.
059 *
060 * @see org.apache.turbine.pipeline.AbstractValve#initialize()
061 */
062 public void initialize() throws Exception
063 {
064 super.initialize();
065
066 this.actionLoader = (ActionLoader)TurbineAssemblerBroker.getLoader(Action.NAME);
067 }
068
069 /**
070 * @see org.apache.turbine.Valve#invoke(RunData, ValveContext)
071 */
072 public void invoke(PipelineData pipelineData, ValveContext context)
073 throws IOException, TurbineException
074 {
075 try
076 {
077 // Put the Access Control List into the RunData object, so
078 // it is easily available to modules. It is also placed
079 // into the session for serialization. Modules can null
080 // out the ACL to force it to be rebuilt based on more
081 // information.
082 actionLoader.exec(
083 pipelineData, Turbine.getConfiguration().getString(
084 TurbineConstants.ACTION_ACCESS_CONTROLLER_KEY,
085 TurbineConstants.ACTION_ACCESS_CONTROLLER_DEFAULT));
086 }
087 catch (Exception e)
088 {
089 throw new TurbineException(e);
090 }
091
092 // Pass control to the next Valve in the Pipeline
093 context.invokeNext(pipelineData);
094 }
095 }