01: /*
02: * $Id: Controller.java 471754 2006-11-06 14:55:09Z husted $
03: *
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "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(ComponentContext tileContext,
50: HttpServletRequest request, HttpServletResponse response,
51: ServletContext servletContext) throws ServletException,
52: IOException;
53:
54: /**
55: * Method associated to a tile and called immediately before the tile
56: * is included.
57: *
58: * @param tileContext Current tile context.
59: * @param request Current request
60: * @param response Current response
61: * @param servletContext Current servlet context
62: */
63: public void execute(ComponentContext tileContext,
64: HttpServletRequest request, HttpServletResponse response,
65: ServletContext servletContext) throws Exception;
66: }
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