1 /*
2 * $Id: ViewDefinitionsAction.java 471754 2006-11-06 14:55:09Z husted $
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
22
23 package org.apache.struts.tiles.actions;
24
25 import java.io.PrintWriter;
26
27 import javax.servlet.ServletContext;
28 import javax.servlet.http.HttpServletRequest;
29 import javax.servlet.http.HttpServletResponse;
30
31 import org.apache.struts.action.Action;
32 import org.apache.struts.action.ActionForm;
33 import org.apache.struts.action.ActionForward;
34 import org.apache.struts.action.ActionMapping;
35 import org.apache.struts.tiles.DefinitionsFactory;
36 import org.apache.struts.tiles.TilesUtil;
37
38
39
40 /**
41 * <p>An <strong>Action</strong> that writes the
42 * definitions of the Tiles factory.
43 * Useful to check what is effectivly loaded in a
44 * Tiles factory
45 */
46
47 public class ViewDefinitionsAction extends Action {
48
49 /**
50 * Process the specified HTTP request, and create the corresponding HTTP
51 * response (or forward to another web component that will create it),
52 * with provision for handling exceptions thrown by the business logic.
53 *
54 * @param mapping The ActionMapping used to select this instance
55 * @param form The optional ActionForm bean for this request (if any)
56 * @param request The HTTP request we are processing
57 * @param response The HTTP response we are creating
58 *
59 * @exception Exception if the application business logic throws
60 * an exception
61 * @since Struts 1.1
62 */
63 public ActionForward execute(ActionMapping mapping,
64 ActionForm form,
65 HttpServletRequest request,
66 HttpServletResponse response)
67 throws Exception
68 {
69 response.setContentType("text/plain");
70 PrintWriter writer = response.getWriter();
71
72 try {
73 ServletContext context = getServlet().getServletContext();
74 DefinitionsFactory factory =
75 TilesUtil.getDefinitionsFactory(request, context );
76 writer.println( factory.toString() );
77 } catch (Exception e) {
78 writer.println("FAIL - " + e.toString());
79 getServlet().log("ReloadAction", e);
80 }
81
82 writer.flush();
83 writer.close();
84
85 return (null);
86
87 }
88
89 }