View Javadoc

    1   package org.apache.turbine.pipeline;
    2
    3
    4   /*
    5    * Licensed to the Apache Software Foundation (ASF) under one
    6    * or more contributor license agreements.  See the NOTICE file
    7    * distributed with this work for additional information
    8    * regarding copyright ownership.  The ASF licenses this file
    9    * to you under the Apache License, Version 2.0 (the
    10   * "License"); you may not use this file except in compliance
    11   * with the License.  You may obtain a copy of the License at
    12   *
    13   *   http://www.apache.org/licenses/LICENSE-2.0
    14   *
    15   * Unless required by applicable law or agreed to in writing,
    16   * software distributed under the License is distributed on an
    17   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    18   * KIND, either express or implied.  See the License for the
    19   * specific language governing permissions and limitations
    20   * under the License.
    21   */
    22
    23
    24  import java.io.IOException;
    25
    26  import org.apache.turbine.Turbine;
    27  import org.apache.turbine.TurbineConstants;
    28  import org.apache.turbine.modules.Action;
    29  import org.apache.turbine.modules.ActionLoader;
    30  import org.apache.turbine.services.assemblerbroker.TurbineAssemblerBroker;
    31  import org.apache.turbine.util.TurbineException;
    32
    33  /**
    34   * Implements the action portion of the "Turbine classic" processing
    35   * pipeline (from the Turbine 2.x series).
    36   *
    37   * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
    38   * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a>
    39   * @version $Id: DefaultACLCreationValve.java 758254 2009-03-25 13:41:02Z tv $
    40   */
    41  public class DefaultACLCreationValve
    42      extends AbstractValve
    43  {
    44      private ActionLoader actionLoader;
    45
    46      /**
    47       * Here we can setup objects that are thread safe and can be
    48       * reused. We setup the session validator and the access
    49       * controller.
    50       */
    51      public DefaultACLCreationValve()
    52          throws Exception
    53      {
    54          // empty constructor
    55      }
    56
    57      /**
    58       * Initialize this valve for use in a pipeline.
    59       *
    60       * @see org.apache.turbine.pipeline.AbstractValve#initialize()
    61       */
    62      public void initialize() throws Exception
    63      {
    64          super.initialize();
    65
    66          this.actionLoader = (ActionLoader)TurbineAssemblerBroker.getLoader(Action.NAME);
    67      }
    68
    69      /**
    70       * @see org.apache.turbine.Valve#invoke(RunData, ValveContext)
    71       */
    72      public void invoke(PipelineData pipelineData, ValveContext context)
    73          throws IOException, TurbineException
    74      {
    75          try
    76          {
    77              // Put the Access Control List into the RunData object, so
    78              // it is easily available to modules.  It is also placed
    79              // into the session for serialization.  Modules can null
    80              // out the ACL to force it to be rebuilt based on more
    81              // information.
    82              actionLoader.exec(
    83                      pipelineData, Turbine.getConfiguration().getString(
    84                              TurbineConstants.ACTION_ACCESS_CONTROLLER_KEY,
    85                              TurbineConstants.ACTION_ACCESS_CONTROLLER_DEFAULT));
    86          }
    87          catch (Exception e)
    88          {
    89              throw new TurbineException(e);
    90          }
    91
    92          // Pass control to the next Valve in the Pipeline
    93          context.invokeNext(pipelineData);
    94      }
    95  }