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 }