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Java > Open Source Codes > org > apache > turbine > pipeline > ModuleRunner


1 package org.apache.turbine.pipeline;
2
3 /* ====================================================================
4  * The Apache Software License, Version 1.1
5  *
6  * Copyright (c) 2001 The Apache Software Foundation. All rights
7  * reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution,
22  * if any, must include the following acknowledgment:
23  * "This product includes software developed by the
24  * Apache Software Foundation (http://www.apache.org/)."
25  * Alternately, this acknowledgment may appear in the software itself,
26  * if and wherever such third-party acknowledgments normally appear.
27  *
28  * 4. The names "Apache" and "Apache Software Foundation" and
29  * "Apache Turbine" must not be used to endorse or promote products
30  * derived from this software without prior written permission. For
31  * written permission, please contact apache@apache.org.
32  *
33  * 5. Products derived from this software may not be called "Apache",
34  * "Apache Turbine", nor may "Apache" appear in their name, without
35  * prior written permission of the Apache Software Foundation.
36  *
37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48  * SUCH DAMAGE.
49  * ====================================================================
50  *
51  * This software consists of voluntary contributions made by many
52  * individuals on behalf of the Apache Software Foundation. For more
53  * information on the Apache Software Foundation, please see
54  * <http://www.apache.org/>.
55  */
56
57 import org.apache.turbine.Turbine;
58 import org.apache.turbine.RunData;
59 import org.apache.turbine.modules.Module;
60 import org.apache.turbine.TurbineException;
61 import org.apache.commons.logging.LogFactory;
62 import org.apache.commons.logging.Log;
63 /**
64  * This class is used execute the module chain.
65  *
66  * @author <a HREF="mailto:mikeh@apache.org">Mike Haberman</a>
67  * @version $Id: ModuleRunner.java,v 1.4 2002/04/09 17:29:35 jtaylor Exp $
68  */
69 public class ModuleRunner
70 {
71     private static final Log log = LogFactory.getLog( ModuleRunner.class );
72
73     public void run(String JavaDoc moduleType, RunData data)
74         throws TurbineException,Exception JavaDoc
75     {
76         String JavaDoc target;
77         String JavaDoc oldTarget = "";
78         Module module;
79
80         target = getTarget(data);
81         while(! oldTarget.equals(target))
82         {
83            log.debug("Module to run: " + moduleType + ":" + target);
84
85            module = Turbine.getResolver().getModule(moduleType, target);
86            module.execute(data);
87
88            // target may have changed
89 oldTarget = target;
90            target = getTarget(data);
91         }
92
93         /*
94         // set the run data's target to the normalized target path
95         // i.e. ',' are changed to '/'
96         NOT A good idea. Template Services expect the ','
97         data.setTarget(target);
98         */
99     }
100
101     private String JavaDoc getTarget(RunData data)
102         throws Exception JavaDoc
103     {
104         String JavaDoc target = data.getTarget();
105         if (target == null)
106         {
107             target = data.getParameters().getString("template");
108             data.setTarget(target);
109         }
110
111         // normalize the target
112 target = data.getTarget();
113         StringBuffer JavaDoc sb = new StringBuffer JavaDoc();
114         PipelineUtil.parseTemplatePath(target,sb);
115         return sb.toString();
116     }
117 }
118
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