1 /*
2 * $Id$
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21 package org.apache.struts.chain.commands.servlet;
22
23 import org.apache.struts.Globals;
24 import org.apache.struts.chain.Constants;
25 import org.apache.struts.chain.commands.AbstractSelectModule;
26 import org.apache.struts.chain.contexts.ActionContext;
27 import org.apache.struts.chain.contexts.ServletActionContext;
28
29 import jakarta.servlet.http.HttpServletRequest;
30
31 /**
32 * <p>Cache the <code>ModuleConfig</code> and <code>MessageResources</code>
33 * instances for the sub-application module to be used for processing this
34 * request.</p>
35 *
36 * @version $Rev$ $Date: 2005-06-04 10:58:46 -0400 (Sat, 04 Jun 2005)
37 * $
38 */
39 public class SelectModule extends AbstractSelectModule {
40 // ------------------------------------------------------- Protected Methods
41 protected String getPrefix(ActionContext context) {
42 // Identify the URI from which we will match a module prefix
43 ServletActionContext sacontext = (ServletActionContext) context;
44 HttpServletRequest request = sacontext.getRequest();
45 String uri =
46 (String) request.getAttribute(Constants.INCLUDE_SERVLET_PATH);
47
48 if (uri == null) {
49 uri = request.getServletPath();
50 }
51
52 if (uri == null) {
53 throw new IllegalArgumentException("No path information in request");
54 }
55
56 // Identify the module prefix for the current module
57 String prefix = ""; // Initialize to default prefix
58 String[] prefixes =
59 (String[]) sacontext.getApplicationScope().get(Globals.MODULE_PREFIXES_KEY);
60 int lastSlash = 0;
61
62 while (prefix.equals("") && ((lastSlash = uri.lastIndexOf("/")) > 0)) {
63 uri = uri.substring(0, lastSlash);
64
65 for (int i = 0; i < prefixes.length; i++) {
66 if (uri.equals(prefixes[i])) {
67 prefix = prefixes[i];
68
69 break;
70 }
71 }
72 }
73
74 return (prefix);
75 }
76 }