tomcat-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Martin Gainty <mgai...@hotmail.com>
Subject RE: adding servlet definition to context on the fly :Tomcat 5.5
Date Sat, 04 Oct 2008 21:39:44 GMT

doctor john

to followup with the addChild method and if an exception is thrown and you determine your
container doesnt support child containers..what then?

your diagnosis doctor..

Martin 
______________________________________________ 
Disclaimer and confidentiality note 
Everything in this e-mail and any attachments relates to the official business of Sender.
This transmission is of a confidential nature and Sender does not endorse distribution to
any party other than intended recipient. Sender does not necessarily endorse content contained
within this transmission. 


> From: john@kewlstuff.co.za
> To: users@tomcat.apache.org
> Subject: Re: adding servlet definition to context on the fly :Tomcat 5.5
> Date: Sat, 4 Oct 2008 21:20:39 +0200
> 
> 
> ----- Original Message ----- 
> From: <ram.sriharsha@agileitinc.com>
> To: <users@tomcat.apache.org>
> Sent: Saturday, October 04, 2008 5:34 PM
> Subject: adding servlet definition to context on the fly :Tomcat 5.5
> 
> 
> > Hi,
> > I had written some code to dynamically add a servlet to a context in a
> > deployed applicaiton in Tomcat 4.1. This code basically uses the catalina
> > loader to obtain the server->engine->host->and context, and invokes the
> > addChild method after configuring a StandardWwrapper to represent the
> > servlet I am adding. This all works fine in Tomcat4.1 and I am able to
> > access the servlet through the right url immediately, without having to
> > restart Tomcat.
> 
> I'd luv to see that code... the stuff you playing with is in Tomcat core... 
> must have been difficult to debug... perhaps its an embedded app?
> 
> But I think this answers your question...
> 
>     public void addChild(Container child) {
> 
>         throw new IllegalStateException
>             (sm.getString("standardWrapper.notChild"));
> 
>     }
> 
>     is what addChild now looks like in 6... if they did allow it, now they 
> dont (;
> 
> Dont think you can blame TC... whoever made that app was doing open heart 
> surgery ;)
> 
> I've never tried this, but its really interesting... I think I would start 
> by having a good look at...
> 
>     HttpServlet source code... its an abstract class with a little 
> introspection...
> 
> but I (think... maybe) that the way to go is to make a servlet... that does 
> what HttpServlet servlet does... and then load your sevlet classes into your 
> servlet... and call them...
> 
> I (think... maybe) maybe that it will come down to doing your own servlet 
> mapping... and detection of new classes added... possibly your own uri to a 
> "manager" function...
> 
> ie I think you can make a servlet intelligent enough to do this... without 
> climbing into the engine and doing a liver transplant... and then because 
> you now inside the official API... this will never happen again.
> 
> In the end it will be something like 
> http://domain/contect/addons/ANY_ADD_ON_SERVLETS
> 
> ... I'd give that a bash... dont think its a good idea trying the current 
> method even if you do find an open vein ;)
> 
> Good Luck...
> 
> ---------------------------------------------------------------------------
> HARBOR : http://www.kewlstuff.co.za/index.htm
> The most powerful application server on earth.
> The only real POJO Application Server.
> See it in Action : http://www.kewlstuff.co.za/cd_tut_swf/whatisejb1.htm
> --------------------------------------------------------------------------- 
> 
> 
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
> 

_________________________________________________________________
Get more out of the Web. Learn 10 hidden secrets of Windows Live.
http://windowslive.com/connect/post/jamiethomson.spaces.live.com-Blog-cns!550F681DAD532637!5295.entry?ocid=TXT_TAGLM_WL_domore_092008
Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message