Marc-Oliver Scheele wrote:
>
> I know the specification tells that you are not allowed to use threads in
> the EJB container.
And an EJB server may throw a SecurityException if you attempt to do
that. Plus a million other synchronization problems.
> But because JMS isn't specified yet, you can't give up threads.
Specified, just not mandated.
> For example:
> If you are doing networking (e.g. http-requests) in your beans the only way to
> controll time-outs, is to use threads.
Servlets?
arkin
>
> Gretings
> Oliver
>
> Assaf Arkin wrote:
> >
> > Where does the specification imply you can use td?
> >
> > The ban on thread is not specific to the EJB class, it is specific to
> > all the application code running inside the EJB container. That covers
> > everything underneath the container (EJB, related classes, related
> > libraries) and above the resource managers and connectors (JDBC, JMS,
> > etc).
> >
> > arkin
> >
> > Laird Nelson wrote:
> > >
> > > An enterprise bean may not use thread primitives. I take this to mean
> > > it cannot do this:
> > >
> > > Thread t = new Thread(someRunnable);
> > > t.start();
> > >
> > > ...or this:
> > >
> > > synchronized (someGuard) {
> > > doCriticalWork();
> > > doMoreCriticalX-Mozilla-Status: 0009...or this:
> > >
> > > Thread t = new Thread(someRunnable);
> > > t.start();
> > > t.join();
> > >
> > > ...but the specification seems to imply that it COULD do something like
> > > this--and I hope I can:
> > >
> > > ThreadDelegate td =
> > > new BasicJavaObjectThatUsesThreadsAndSynchronizationInternally();
> > > td.doWork(); // implementation works with threads
> > >
> > > Is this true? If for some reason it is NOT true, doesn't this mean I
> > > now have to know about implementation details of all the plain-Jane Java
> > > objects my enterprise bean might use? Wouldn't such a thing blow
> > > reusability out of the water?
> > >
> > > If it IS true, then why can't an enterprise bean use threads directly,
> > > as the invocation of td.doWork() in the example above occurs in the
> > > enterprise bean's caller's thread anyhow?
> > >
> > > Cheers,
> > > Laird
> > >
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