to.etc.webapp.ajax.comet

Class GenericCometServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

to.etc.webapp.ajax.comet.GenericCometServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class GenericCometServlet
extends javax.servlet.http.HttpServlet

This is a generic Ajax Comet pattern servlet. It implements the Comet pattern (http://www.ajaxian.com/archives/comet-a-new-approach-to-ajax-applications) using a standard Servlet container. This implementation is unusable for large amounts of clients due to thread and connection exthaustion on the web server. The base interface implemented by this servlet is however well suited to be implemented by different servlet containers that do have asynchronous servlet implementations like Tomcat 6, Bea and Jetty.

See also:

http://blogs.webtide.com/gregw/2006/07/25/1153845234453.html

Author:

Frits Jalvingh Created on Oct 25, 2006

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
GenericCometServlet()

Method Summary

Modifier and Type	Method and Description
void	destroy()
protected void	doGet(javax.servlet.http.HttpServletRequest arg0, javax.servlet.http.HttpServletResponse arg1)
protected void	doPost(javax.servlet.http.HttpServletRequest arg0, javax.servlet.http.HttpServletResponse arg1)
protected void	handleException(Exception x)
void	init()

Methods inherited from class javax.servlet.http.HttpServlet

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

GenericCometServlet

public GenericCometServlet()

Method Detail

init

public void init()
          throws javax.servlet.ServletException

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

doGet

protected void doGet(javax.servlet.http.HttpServletRequest arg0,
                     javax.servlet.http.HttpServletResponse arg1)
              throws javax.servlet.ServletException,
                     IOException

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

doPost

protected void doPost(javax.servlet.http.HttpServletRequest arg0,
                      javax.servlet.http.HttpServletResponse arg1)
               throws javax.servlet.ServletException,
                      IOException

Overrides:

doPost in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

handleException

protected void handleException(Exception x)
                        throws javax.servlet.ServletException,
                               IOException

Throws:

javax.servlet.ServletException

IOException

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Servlet

Overrides:

destroy in class javax.servlet.GenericServlet