com.bea.wlai.event
Class EventRouterServlet

java.lang.Object
  |
  +--javax.servlet.GenericServlet
        |
        +--javax.servlet.http.HttpServlet
              |
              +--com.bea.wlai.event.EventRouterServlet

public class EventRouterServlet

extends javax.servlet.http.HttpServlet

implements javax.servlet.SingleThreadModel

An implementation of IEventRouter that provides a servlet interface for access by remote HTTP clients. This servlet, when initialized creates an instance of IEventGenerator using the class name given in its startup (init) parameters. The set of startup parameters is then sent to the IEventGenerator using its init() method. This router reads an XML document describing the current event subscriptions it has been asked to maintain, and presents either an HTML interface or an XML interface to the client in order to maintain this list of subscriptions. These subscriptions are passed on to the IEventGenerator so it only generates events for occurrences that have been designated as being of interest.

The required init parameters are...

eventGeneratorClassName - The class name of the IEventGenerator to use. This class will be instantiated using this.getClass().getClassLoader().loadClass(). newInstance().

Author:

Copyright © 2000, 2001 BEA Systems, Inc. All Rights Reserved.

See Also:

Serialized Form

Constructor Summary

EventRouterServlet()

Method Summary

void	destroy()
void	init(javax.servlet.ServletConfig config)
protected void	printException(java.lang.Exception e, int statusCode, java.io.PrintWriter out, javax.servlet.http.HttpServletResponse res) Utility method to print an exception out to the response writer.
void	service(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res)

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EventRouterServlet

public EventRouterServlet()
                   throws java.io.FileNotFoundException

Method Detail

init

public void init(javax.servlet.ServletConfig config)
          throws javax.servlet.ServletException

Overrides:

init in class javax.servlet.GenericServlet

destroy

public void destroy()

Overrides:

destroy in class javax.servlet.GenericServlet

service

public void service(javax.servlet.http.HttpServletRequest req,
                    javax.servlet.http.HttpServletResponse res)
             throws java.io.IOException

Overrides:

service in class javax.servlet.http.HttpServlet

printException

protected void printException(java.lang.Exception e,
                              int statusCode,
                              java.io.PrintWriter out,
                              javax.servlet.http.HttpServletResponse res)

Utility method to print an exception out to the response writer.