[ajug-members] Scheduler in Webogic 8.1 environment ?

[Sony Antony]

First of all :
Thank you very much Joe for the javax.ejb.Timer. This is exactly what
we were looking for.

I also came across java.util.Timer, which will execute a background
thread to do teh task

Thanks everybody for help.

--sony

On 4/10/07, Les Hazlewood <les at hazlewood.com> wrote:
> Its important to note that the Timer references Joe makes are EJB
> specific APIs, i.e. those that require an application server.  You're
> operating in a Weblogic environment, so this isn't really an issue for
> you (as is obvious by the title of this thread), but I make the
> distinction for other folks.
>
> I have used Quartz in many JEE and JSE environments, both without
> incident.  It also supports clustered deployments.  I highly highly
> recommend it - its a fantastic little library.  But, if you're already
> in an app server environment, javax.ejb.Timer is probably the way to go
> (unless your app server has problems clustering timed tasks, which
> Quartz could help out with).
>
> Even better, if you use Spring 2.0, you can use Spring's TaskExecutor
> support, which abstracts away the implementation details, be it Quartz,
> javax.ejb.Timer or java.util.Timer.  This is the clean way to go and
> allows you to configure easily based on your environment (app server,
> tomcat, standalone app, etc).  Super clean.
>
> Cheers,
>
> Les
>
> On Sat, 7 Apr 2007 14:17:44 -0400, "Joe Sam Shirah"
> <joe_sam at bellsouth.net> said:
> >
> >     Hi Sony and Barry,
> >
> >     Timers were introduced in J2EE 1.4.  This is probably the "blessed"
> >     way
> > since user threads are pretty much frowned on in managed environments.
> > While Quartz specifically says "virtually any J2EE or J2SE
> > application..." I
> > would double verify potential thread behavior before using it or any
> > other
> > option.
> >
> >     That's not to put down Quartz or others, just another consideration,
> > although it's one that is often overlooked or ignored.  I have a client
> > with
> > an architect who was once a Sun employee.  He was pooh-poohing my design
> > until he finally said, "Why do you do it x-way?"  I responded, "No user
> > threads in JEE."  After a few moments he said, "Oh, yeah..."
> >
> >     For info on Timers, see:
> >
> > ONJava.com -- Using Timers in J2EE Applications
> > http://www.onjava.com/pub/a/onjava/2004/10/13/j2ee-timers.html
> >
> >
> > Using the Timer Service
> > http://java.sun.com/j2ee/1.4/docs/tutorial/doc/Session5.html
> >
> >
> > JSR 236: Timer for Application Servers
> > http://jcp.org/en/jsr/detail?id=236
> >
> >
> >                                                          Joe Sam
> >
> > Joe Sam Shirah -        http://www.conceptgo.com
> > conceptGO       -        Consulting/Development/Outsourcing
> > Java Filter Forum:       http://www.ibm.com/developerworks/java/
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> >
> >
> > ----- Original Message -----
> > From: "Barry Hawkins" <barry at alltc.com>
> > To: "General AJUG membership forum (100-200 messages/month)"
> > <ajug-members at ajug.org>
> > Sent: Saturday, April 07, 2007 12:29 PM
> > Subject: Re: [ajug-members] Scheduler in Webogic 8.1 environment ?
> >
> >
> > > If there is a JSR and an implementation, I don't know anyone using it.
> > > The standard that has emerged (rather than some JCP attempt at
> > > innovation by committee) is Quartz[0].  Pretty excellent library for
> > > scheduling of automated tasks in Java.
> > >
> > > [0] - https://quartz.dev.java.net/
> > >
> > > Sony Antony wrote:
> > > > Is there a J2EE level specs for job scheduling ?
> > > > If not is there one provided by Weblogic server 8.1 ?
> > > >
> > > > We want certain jobs to run at specified time.
> > > >
> > > > Thanks
> > > > --sony
> > > [...]
> > >
> > > --
> > > Barry Hawkins
> > > All Things Computed
> > > site: http://www.alltc.com
> > > weblog: http://www.yepthatsme.com
> > >
> > > Registered Linux User #368650
> > >
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