tomcat-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Phillip Morelock <subscripti...@phillipmorelock.com>
Subject Re: jdbc connection list
Date Tue, 04 Jun 2002 23:20:58 GMT
also called the Observer pattern.


On 6/4/02 4:07 PM, "Phillip Morelock" <subscriptions@phillipmorelock.com>
wrote:

> Use the Listener design pattern.  You'll probably write an interface,
> implement it, and then register listeners with classes that will inform them
> of events.
> 
> The java kit already has some of this pattern:
> HttpSessionBindingListener
> 
> for example.
> 
> The pattern is also prevalent throughout Swing and AWT.
> 
> cheers
> fillup
> 
> 
> On 6/4/02 4:01 PM, "Darya Chernikhova" <dc2033@columbia.edu> wrote:
> 
>> 
>> Sorry if this is a copy.  I got an error message from my mail server,
>> after I sent this email, so I'm trying again.
>> Darya
>> 
>> On Tue, 4 Jun 2002, Darya Chernikhova wrote:
>>> 
>>> Hi all,
>>> 
>>> I'd like to write a bean that would keep track of all of the jdbc
>>> connections that users make.
>>> 
>>> So, say that I have 2 applications registered on tomcat -- appA and appB.
>>> And, say that there are 5 servlets or jsp pages per application --
>>> appA/serv1, appA/serv2, ..., appB/serv5 .  And, each servlet's doService
>>> method opens a jdbc connection and gets some data out of my database.
>>> 
>>> I would like to write a bean that would sit there and listen to jdbc
>>> connections being made.  It would store a list of objects containing the
>>> following data:
>>> - connection pointer
>>> - session the connection was made out of
>>> - app and servlet the connection was made out of.
>>> 
>>> My problem is that I don't know much about the "connection making" process
>>> in Tomcat.  When a new connection is made, which Tomcat controller beans
>>> know about it?  What events are sent, and to whom?  What should my bean
>>> extend or implement?
>>> 
>>> I've been looking into the online docs and some books I have, but I
>>> haven't found anything useful yet.
>>> 
>>> Thanks a lot for your help,
>>> Darya.
>>> 
>>> --
>>> To unsubscribe, e-mail:
>>> <mailto:tomcat-user-unsubscribe@jakarta.apache.org>
>>> For additional commands, e-mail:
>>> <mailto:tomcat-user-help@jakarta.apache.org>
>>> 
>> 
>> 
>> --
>> To unsubscribe, e-mail:   <mailto:tomcat-user-unsubscribe@jakarta.apache.org>
>> For additional commands, e-mail: <mailto:tomcat-user-help@jakarta.apache.org>
>> 
> 
> 
> --
> To unsubscribe, e-mail:   <mailto:tomcat-user-unsubscribe@jakarta.apache.org>
> For additional commands, e-mail: <mailto:tomcat-user-help@jakarta.apache.org>
> 


--
To unsubscribe, e-mail:   <mailto:tomcat-user-unsubscribe@jakarta.apache.org>
For additional commands, e-mail: <mailto:tomcat-user-help@jakarta.apache.org>


Mime
View raw message