didn't work... I did a test here to see if this thing worked before implementing the
Connection Dispatcher...
the Servlet can't find the context in which the JSP that called it is...
here's what I did:
* created two classes TesteDispatcher and TesteCallDispatcher.
TesteDispatcher is the Servlet, and TesteCallDispatcher is just a dummy class to make
a call to this servlet...
* I then placed both classes in $tomcat_home\common\classes
* created a context called \teste1
<Context path="/teste1" docBase="teste1" debug="0" reloadable="true">
<Parameter name="url" value="URL do Contexto teste1" override="false"/>
</Context>
* created a JSP called teste.jsp
<%@page import="dispatch.TesteCallDispatcher"%>
<%
TesteCallDispatcher tcd = new TesteCallDispatcher();
out.println("A URL para esse contexto é \""+tcd.myContextURL()+"\".");
%>
when I execute it, nothing happens... there is a call in TesteDispatcher like this:
ServletConfig sConf = getServletConfig(); <-- this is returning NULL
what did I do wrong? Or was it that I missunderstood ur solution, or even, u
missunderstood my problem. :)
thanks
.:| Christian J. Dechery
.:| FINEP - Depto. de Sistemas
.:| [EMAIL PROTECTED]
.:| (21) 2555-0332
>>> [EMAIL PROTECTED] 09/07/02 17:41 >>>
Or even simpler why not store it as a parameter in the server.xml. You will
need to add the parameter to each of your contexts in the server.xml as
follows:-
<Context path="/examples" docBase="examples" ....>
..............
<Parameter name="db.url" value="jdbc:postgres://localhost/mydb"
override="false"/>
</Context>
And then in your servlet code you use the following to retrieve it (from
your servlet):-
getServletContext().getInitParameter("db.url")
Regards.
----- Original Message -----
From: "Christian J. Dechery" < [EMAIL PROTECTED] >
To: < [EMAIL PROTECTED] >
Sent: Tuesday, July 09, 2002 8:47 PM
Subject: RE: Need Ideas... big problem! (long)
Sorry... but could u explain this a little furhter? I'm not familiar with
JNDI.
thanks
.:| Christian J. Dechery
.:| FINEP - Depto. de Sistemas
.:| [EMAIL PROTECTED]
.:| (21) 2555-0332
>>> [EMAIL PROTECTED] 09/07/02 16:41 >>>
Why don't you store the JDBC URL in JNDI and have DAO look it up
dynamically....
Bob Kranson
Software Technical Support Analyst
UNIFACE and Optimal Products Technical Support
U.S. Support Center 888-551-0404
New Calls: [EMAIL PROTECTED]
31440 Northwestern Hwy, Farmington Hills, MI 48334-2564
(248)737-7300 x12702 Fax:(248)737-7574
> -----Original Message-----
> From: Christian J. Dechery [ mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, July 09, 2002 2:38 PM
> To: [EMAIL PROTECTED]
> Subject: Need Ideas... big problem! (long)
>
>
> I have a huge problem here... and I can't think of a simple
> solution for it, I'm hoping u guys can give some "light". :)
>
> Let me first describe the "environment" here, then the problem.
>
> We have here a webapp called FAP (c:\tomcat\fap). It is
> composed of: /fap/*.jsp (like a hundred of them)
> /fap/WEB-INF/classes/finep (this package finep has a lot of
> subpackages) /fap/WEB-INF/classes/finep/DAO.class <-- here
> the problem resides... /fab/lib/OracleDrivers.jar
>
> the class DAO provides the Connection to an Oracle database...
>
> so far, everything is fine... but here's the thing... this
> webapp gets replicated... the whole dir, because there are
> other instances of this system with small changes, and we
> didn't have the time to create a self-configuring app to
> allow that... so we copy the whole dir and make the necessary
> changes... BUT... the classes never change... only the
> JSPs... AND another thing that may change is the database
> (and of course DAO)... so how it is done?
>
> we have /fap with DAO.class pointing to a specific db URL
> and; we have (for example) /fap2 with a few JSPs changes and
> DAO.class pointing to another URL.
>
> this of course sux! If we wanna change the database of a
> specific webapp we have to re-compile DAO and place it
> there... and if we change a class (any class) we have to
> update it in ALL the contexts...
>
> What I want:
> I would like to place the package "finep" and the
> OracleDrivers in the global context
> (c:\tomcat\common\classes, \lib), so all would be pretty and
> centralized; and create something like a Connection
> Dispatcher (also in the global context) that would receive
> requests from the JSPs and provide a Connection to the
> specific URL based in which context that JSP was when the
> request was made. I don't know if that's possible... I'm just
> guessing... of course I want do this as painless as
> possible... cuz we have like 80 classes and more than 150 JSPs...
>
> to confuse??? My english also sux... sorry!
>
>
> .:| Christian J. Dechery
> .:| FINEP - Depto. de Sistemas
> .:| [EMAIL PROTECTED]
> .:| (21) 2555-0332
>
>
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