01: /*
02: * argun 1.0
03: * Web 2.0 delivery framework
04: * Copyright (C) 2007 Hammurapi Group
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation; either
09: * version 2 of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with this library; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19: *
20: * URL: http://www.hammurapi.biz
21: * e-Mail: support@hammurapi.biz
22: */
23: package biz.hammurapi.web;
24:
25: import java.lang.reflect.Method;
26:
27: /**
28: * Dispatches requests to own methods. Methods must be declared in subclasses of this
29: * class to avoid infinite loops.
30: */
31: public class SelfDispatchingServlet extends DispatchingServlet {
32:
33: /**
34: * Extracts instance name from the path and returns instance for the path.
35: * @param actionPath
36: * @return Object to invoke action methods
37: * @throws HammurapiWebException
38: */
39: protected Object getActionInstance(String path)
40: throws HammurapiWebException {
41: return this ;
42: }
43:
44: protected String getActionName(String path)
45: throws HammurapiWebException {
46: return path;
47: }
48:
49: /**
50: * @return Position of "/" in the servlet path info which separates action name from style info.
51: */
52: protected int styleSeparatorPosition() {
53: return 0;
54: }
55:
56: protected void verifyMethod(Method method)
57: throws HammurapiWebException {
58: if (!SelfDispatchingServlet.class.isAssignableFrom(method
59: .getDeclaringClass())) {
60: throw new HammurapiWebException(
61: "Cannot dispatch to method "
62: + method
63: + " because it is declared in a superclass of "
64: + SelfDispatchingServlet.class);
65: }
66: }
67: }
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