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From "Jiang, Peiyun" <Peiyun.Ji...@nrc-cnrc.gc.ca>
Subject RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
Date Tue, 21 Dec 2004 16:56:55 GMT
You may use a scheduler to schedule your tasks to run every 30 minutes. 

http://www.theserverside.com/blogs/printfriendly.tss?id=QuartzSchedulerInJ2E
E
http://www.quartzscheduler.org/quartz/. 

Peiyun

-----Original Message-----
From: Shilpa Nalgonda [mailto:snalgonda@mypublisher.com]
Sent: December 21, 2004 11:41 AM
To: Tomcat Users List; Billy Talton
Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30


My application has to use the connection pooling of Tomcat to talk to the
database...
and all my Database access classes are deployed om Tomcat...so if i just
write a java standalone command line program,
can i access those connection pooling classes...

-----Original Message-----
From: Billy Talton [mailto:billy.talton@gmail.com]
Sent: Tuesday, December 21, 2004 11:41 AM
To: Tomcat Users List
Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30


Why are you writing a servlet for this?  If the application does not
use any of the services confined to the Servlet API and Tomcat, just
write a stand-alone application and setup up a cron job to run it.
Seems like overkill to me.


On Tue, 21 Dec 2004 16:28:49 -0000, Allistair Crossley
<Allistair.Crossley@qas.com> wrote:
> no, and I believe doing so it bad practice. use some OS controlled timer
like cron to issue a HTTP call to your servlet. I once wrote a shell script
that calls a http address on the local machine but cannot remember how ;) if
you are using oracle then you can setup this timer thread inside the
database itself. don't add a thread into your web application.
>
> > -----Original Message-----
> > From: Shilpa Nalgonda [mailto:snalgonda@mypublisher.com]
> > Sent: 21 December 2004 16:14
> > To: Tomcat Users List
> > Subject: RE: How to run servlet for every 30 minutes in Tomcat 4.1.30
> >
> >
> > Thanks for the reply...
> >
> > The application which i am trying to write is a standalone
> > utility.. Client
> > does not hit this servlet.
> >
> > Instead my application which is a servlet, will make some
> > database calls--
> > and if the required data is present in the database, then
> > that data is sent
> > to the client via xmlrpc call and the response from the xmlrpc call is
> > updated back into the dataabse.
> >
> > So we want this utility preferably servlet in our Tomcat
> > container to be run
> > every 30 minutes like a cron job, to do the database updates..
> >
> > There are so many other classes deployed on Tomcat and i want
> > to use those
> > classes to write this servlet utility.
> > This is the reason why chose to use servlet, but is there any
> > configurable
> > parameter to run servlet for every 30 minutes...
> >
> > -----Original Message-----
> > From: Wade Chandler [mailto:wchandler@redesetgrow.com]
> > Sent: Tuesday, December 21, 2004 11:03 AM
> > To: Tomcat Users List
> > Subject: Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
> >
> >
> > Shilpa Nalgonda wrote:
> > > Hi,
> > > I am using Tomcat4.1.30 version.
> > > I have to develop a client application which looks in the
> > database every
> > 30
> > > minutes,
> > > to retrieve the status of an order and send the status to the remote
> > client.
> > > Again waits for the
> > > The client's response and insert the repsonse back to the database.
> > >
> > > I wanted to do this in a servlet, so is there any way that
> > i could run
> > this
> > > servlet automatically inside the
> > > Tomcat container, or is it configurable in servlet mapping?
> > if so can
> > > someone please suggest me with examples...
> > >
> > >
> > >
> > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: tomcat-user-unsubscribe@jakarta.apache.org
> > > For additional commands, e-mail: tomcat-user-help@jakarta.apache.org
> > >
> > >
> > >
> >
> > Well....it's kind of not extremely clear what you are asking, but why
> > does the servlet need to do anything except listen for a
> > client which is
> > threaded to do this every 30 minutes, in other words...why
> > not have the
> > servlet do what it naturally does...sit there and get hit by client
> > requests....get the info....and send it back?  I mean...the servlet
> > can't push to the client unless you want to use something
> > besides http,
> > or unless you are using servlets on both ends and http servers on both
> > ends.  You could use keep alives I guess.....I wouldn't though....only
> > so many tcp/ip connections.
> >
> > Wade
> >
> >
> > ---------------------------------------------------------------------
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> > For additional commands, e-mail: tomcat-user-help@jakarta.apache.org
> >
> >
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> >
> >
>
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