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Java > Open Source Codes > org > apache > struts > chain > servlet > SelectAction


1 /*
2  * Copyright 2003,2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.apache.struts.chain.servlet;
18
19
20 import javax.servlet.http.HttpServletRequest JavaDoc;
21 import org.apache.commons.chain.Context;
22 import org.apache.commons.chain.web.servlet.ServletWebContext;
23 import org.apache.struts.chain.AbstractSelectAction;
24 import org.apache.struts.chain.Constants;
25 import org.apache.struts.config.ModuleConfig;
26
27
28 /**
29  * <p>Cache the <code>ActionConfig</code> instance for the
30  * action to be used for processing this request.</p>
31  *
32  * @version $Rev: 54933 $ $Date: 2004-10-16 18:04:52 +0100 (Sat, 16 Oct 2004) $
33  */
34
35 public class SelectAction extends AbstractSelectAction {
36
37
38     // ------------------------------------------------------- Protected Methods
39
40
41     protected String JavaDoc getPath(Context context) {
42
43         ServletWebContext swcontext = (ServletWebContext) context;
44         HttpServletRequest JavaDoc request = swcontext.getRequest();
45         String JavaDoc path = null;
46         boolean extension = false;
47
48         // For prefix matching, match on the path info
49 path = (String JavaDoc) request.getAttribute(Constants.INCLUDE_PATH_INFO);
50         if (path == null) {
51             path = request.getPathInfo();
52         }
53
54         // For extension matching, match on the servlet path
55 if (path == null) {
56             path =
57                 (String JavaDoc) request.getAttribute(Constants.INCLUDE_SERVLET_PATH);
58             if (path == null) {
59                 path = request.getServletPath();
60             }
61             if (path == null) {
62                 throw new IllegalArgumentException JavaDoc
63                     ("No path information in request");
64             }
65             extension = true;
66         }
67
68         // Strip the module prefix and extension (if any)
69 ModuleConfig moduleConfig = (ModuleConfig)
70             swcontext.get(getModuleConfigKey());
71         String JavaDoc prefix = moduleConfig.getPrefix();
72         if (!path.startsWith(prefix)) {
73             throw new IllegalArgumentException JavaDoc("Path does not start with '" +
74                                                prefix + "'");
75         }
76         path = path.substring(prefix.length());
77         if (extension) {
78             int slash = path.lastIndexOf("/");
79             int period = path.lastIndexOf(".");
80             if ((period >= 0) && (period > slash)) {
81                 path = path.substring(0, period);
82             }
83         }
84         return (path);
85
86     }
87
88
89 }
90
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