2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir 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
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with any library licensed under the Apache Software License,
22 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23 * (or with modified versions of the above that use the same license as the above),
24 * and distribute linked combinations including the two. You must obey the
25 * GNU General Public License in all respects for all of the code used other than
26 * the above mentioned libraries. If you modify this file, you may extend this
27 * exception to your version of the file, but you are not obligated to do so.
28 * If you do not wish to do so, delete this exception statement from your version.
32 import java.lang.reflect.InvocationTargetException;
33 import java.lang.reflect.Method;
35 import javax.servlet.http.HttpServletRequest;
36 import javax.servlet.http.HttpServletResponse;
38 import mir.log.LoggerWrapper;
42 * Dispatcher, calls the method passed to ServletModule Class, through the "do"
43 * Parameter (via POST or GET)
45 * @version $Id: ServletModuleDispatch.java,v 1.15.2.2 2005/03/26 11:26:25 zapata Exp $
49 public final class ServletModuleDispatch {
51 private static LoggerWrapper logger = new LoggerWrapper("ServletModule.Dispatch");
52 private static final Class[] SIGNATURE = { HttpServletRequest.class, HttpServletResponse.class };
55 * private parameter-less constructor to prevent unwanted instantiation
58 private ServletModuleDispatch () {
62 * Method to dispatch servletmodule requests.
64 * @param aServletModule
67 * @throws ServletModuleExc
68 * @throws ServletModuleFailure
71 public static void dispatch(ServletModule aServletModule, HttpServletRequest aRequest,
72 HttpServletResponse aResponse) throws ServletModuleExc, ServletModuleFailure {
73 String doParam = aRequest.getParameter("do");
74 logger.debug("ServletModuleDispatch: " + aServletModule.toString() + " with method " + doParam);
76 if (doParam == null) {
77 if (aServletModule.defaultAction() != null)
78 doParam = aServletModule.defaultAction();
80 throw new ServletModuleExc("no parameter do supplied!");
84 Method method = aServletModule.getClass().getMethod(doParam,SIGNATURE);
86 method.invoke(aServletModule,new Object[] {aRequest,aResponse} );
89 else logger.debug("method lookup unsuccesful");
91 catch ( InvocationTargetException e) {
92 logger.error( "invocation target exception: " + e.toString());
93 e.getTargetException().printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
95 throw new ServletModuleFailure(e.getTargetException().getMessage(), e.getTargetException());
98 logger.error( "ServletModuleDispatch: " + t.toString());
99 throw new ServletModuleFailure(t);