1 /*
2 * $Id: Controller.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 package org.apache.struts.tiles;
23
24 import java.io.IOException;
25
26 import javax.servlet.ServletContext;
27 import javax.servlet.ServletException;
28 import javax.servlet.http.HttpServletRequest;
29 import javax.servlet.http.HttpServletResponse;
30
31 /**
32 * A controller is a piece of code called before rendering a jsp page.
33 * A controller can be associated to a tile. See <insert> or
34 * <definition> for association syntax.
35 */
36 public interface Controller {
37
38 /**
39 * Method associated to a tile and called immediately before the tile
40 * is included.
41 *
42 * @param tileContext Current tile context.
43 * @param request Current request
44 * @param response Current response
45 * @param servletContext Current servlet context
46 * @deprecated Use execute() instead. This will be removed after
47 * Struts 1.2.
48 */
49 public void perform(
50 ComponentContext tileContext,
51 HttpServletRequest request,
52 HttpServletResponse response,
53 ServletContext servletContext)
54 throws ServletException, IOException;
55
56 /**
57 * Method associated to a tile and called immediately before the tile
58 * is included.
59 *
60 * @param tileContext Current tile context.
61 * @param request Current request
62 * @param response Current response
63 * @param servletContext Current servlet context
64 */
65 public void execute(
66 ComponentContext tileContext,
67 HttpServletRequest request,
68 HttpServletResponse response,
69 ServletContext servletContext)
70 throws Exception;
71 }