/*
- * Dispatcher
+ * Copyright (C) 2001, 2002 The Mir-coders group
+ *
+ * This file is part of Mir.
+ *
+ * Mir is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Mir is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Mir; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * In addition, as a special exception, The Mir-coders gives permission to link
+ * the code of this program with the com.oreilly.servlet library, any library
+ * licensed under the Apache Software License, The Sun (tm) Java Advanced
+ * Imaging library (JAI), The Sun JIMI library (or with modified versions of
+ * the above that use the same license as the above), and distribute linked
+ * combinations including the two. You must obey the GNU General Public
+ * License in all respects for all of the code used other than the above
+ * mentioned libraries. If you modify this file, you may extend this exception
+ * to your version of the file, but you are not obligated to do so. If you do
+ * not wish to do so, delete this exception statement from your version.
*/
package mir.servlet;
-import java.lang.reflect.*;
-import javax.servlet.http.*;
-import mir.servlet.ServletModuleException;
-import mir.misc.*;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import mir.log.LoggerWrapper;
/**
- * Dispatcher, der in einer ServletModule-Klasse, die Methode, die per Http-Post oder Get
- * Parameter "do" angegeben wurde, ausruft.
+ * Dispatcher, calls the method passed to ServletModule Class, through the "do"
+ * Parameter (via POST or GET)
+ *
+ * @version $Id: ServletModuleDispatch.java,v 1.13 2003/03/06 05:40:39 zapata Exp $
+ *
+ * @Author rk
+ *
*/
public final class ServletModuleDispatch {
- static Logfile theLog;
-
- static {
- theLog = Logfile.getInstance("/tmp/smod.dispatch");
- }
+ private static LoggerWrapper logger = new LoggerWrapper("ServletModule.Dispatch");
+ private static final Class[] SIGNATURE = { HttpServletRequest.class, HttpServletResponse.class };
- /**
- * privater Konstruktor, um versehentliche Instantiierung zu verhindern
- */
- private ServletModuleDispatch () {
- }
+ /**
+ * private constructor to prevent unwanted instantiation;
+ */
- /**
- * Die Dispatch-Routine ruft das von dem Hauptservlet kommende ServletModule
- * mit dem per HttpServletRequest angegebenen Paramter <code>do</code> auf.
- * Ist kein Parameter angegeben, so wird versucht, in die <code>defaultAction</code>
- * des ServletModules zu springen.
- *
- * @param req Http-Request, das vom Dispatcher an die Methode des
- * ServletModules durchgereicht wird
- * @param res Http-Response, die vom Dispatcher an die Methode des
- * ServletModules durchgereicht wird
- * @param sMod ServletModule, an das dispatched wird.
- * @param mod Name des Modules als String (für Logfile)
- */
+ private ServletModuleDispatch () {
+ }
- public static void dispatch(ServletModule sMod, HttpServletRequest req,
- HttpServletResponse res) throws ServletModuleException
- {
- //sMod.predeliver(req,res);
+ /**
+ * Die Dispatch-Routine ruft das von dem Hauptservlet kommende ServletModule
+ * mit dem per HttpServletRequest angegebenen Paramter <code>do</code> auf.
+ * Ist kein Parameter angegeben, so wird versucht, in die <code>defaultAction</code>
+ * des ServletModules zu springen.
+ *
+ * @param req Http-Request, das vom Dispatcher an die Methode des
+ * ServletModules durchgereicht wird
+ * @param res Http-Response, die vom Dispatcher an die Methode des
+ * ServletModules durchgereicht wird
+ * @param sMod ServletModule, an das dispatched wird.
+ * @param mod Name des Modules als String (f?r Logfile)
+ */
- String doParam = req.getParameter("do");
- theLog.printInfo("SerletModuleDispatch: " + sMod.toString() + " with method " + doParam);
- if (doParam == null) {
- if (sMod.defaultAction() != null) doParam = sMod.defaultAction();
- else throw new ServletModuleException("no parameter do supplied!");
- }
+ public static void dispatch(ServletModule sMod, HttpServletRequest req,
+ HttpServletResponse res) throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure
+ {
+ //sMod.predeliver(req,res);
- Class[] params= { HttpServletRequest.class, HttpServletResponse.class};
+ String doParam = req.getParameter("do");
+ logger.info("ServletModuleDispatch: " + sMod.toString() + " with method " + doParam);
+ if (doParam == null) {
+ if (sMod.defaultAction() != null)
+ doParam = sMod.defaultAction();
+ else
+ throw new ServletModuleExc("no parameter do supplied!");
+ }
- try {
- Method method = sMod.getClass().getMethod(doParam,params);
- if (method != null) {
- method.invoke(sMod,new Object[] {req,res} );
- return;
- }
- else theLog.printDebugInfo("method lookup unsuccesful");
- }
- catch ( NoSuchMethodException e) { throw new ServletModuleException("no such method!" + e.toString());}
- catch ( SecurityException e) { throw new ServletModuleException("method not allowed!" + e.toString());}
- catch ( InvocationTargetException e) {throw new ServletModuleException("target method exception!" + e.getTargetException().toString());}
- catch ( IllegalAccessException e) { throw new ServletModuleException("illegal method not allowed!" + e.toString());}
-// catch ( Exception e ) { throw new ServletModuleException(e.toString()); }
+ try {
+ Method method = sMod.getClass().getMethod(doParam,SIGNATURE);
+ if (method != null) {
+ method.invoke(sMod,new Object[] {req,res} );
+ return;
+ }
+ else logger.debug("method lookup unsuccesful");
+ }
+ catch ( NoSuchMethodException e) {
+ throw new ServletModuleFailure("no such method '"+doParam+"' (" + e.getMessage() + ")", e);
+ }
+ catch ( SecurityException e) {
+ throw new ServletModuleFailure("method not allowed!" + e.getMessage(), e);
+ }
+ catch ( InvocationTargetException e) {
+ logger.debug( "invocation target exception: " + e.getMessage());
- throw new ServletModuleException("delivery failed! -- ");
- }
-}
\ No newline at end of file
+ throw new ServletModuleFailure(e.getTargetException().getMessage(), e.getTargetException());
+ }
+ catch ( IllegalAccessException e) {
+ throw new ServletModuleFailure("illegal method not allowed!" + e.getMessage(), e);
+ }
+ catch (Throwable t) {
+ throw new ServletModuleFailure(t);
+ }
+ }
+}
projects / mir.git / blobdiff