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    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: DefaultSessionValidationValve.java 758254 2009-03-25 13:41:02Z tv $
    40   */
    41  public class DefaultSessionValidationValve
    42      extends AbstractValve
    43  {
    44      private ActionLoader actionLoader;
    45
    46      public DefaultSessionValidationValve()
    47          throws Exception
    48      {
    49          // empty constructor
    50      }
    51
    52      /**
    53       * Initialize this valve for use in a pipeline.
    54       *
    55       * @see org.apache.turbine.pipeline.AbstractValve#initialize()
    56       */
    57      public void initialize() throws Exception
    58      {
    59          super.initialize();
    60
    61          this.actionLoader = (ActionLoader)TurbineAssemblerBroker.getLoader(Action.NAME);
    62      }
    63
    64      /**
    65       * @see org.apache.turbine.Valve#invoke(RunData, ValveContext)
    66       */
    67      public void invoke(PipelineData pipelineData, ValveContext context)
    68          throws IOException, TurbineException
    69      {
    70          try
    71          {
    72              // This is where the validation of the Session information
    73              // is performed if the user has not logged in yet, then
    74              // the screen is set to be Login. This also handles the
    75              // case of not having a screen defined by also setting the
    76              // screen to Login. If you want people to go to another
    77              // screen other than Login, you need to change that within
    78              // TurbineResources.properties...screen.homepage; or, you
    79              // can specify your own SessionValidator action.
    80              actionLoader.exec(pipelineData,
    81                      Turbine.getConfiguration().getString(
    82                              TurbineConstants.ACTION_SESSION_VALIDATOR_KEY,
    83                              TurbineConstants.ACTION_SESSION_VALIDATOR_DEFAULT));
    84          }
    85          catch (Exception e)
    86          {
    87              throw new TurbineException(e);
    88          }
    89
    90          // Pass control to the next Valve in the Pipeline
    91          context.invokeNext(pipelineData);
    92      }
    93  }