... but you can create a Singleton (NOT and EJB), accessed by a static
method (from an EJB), and save the data in the object. The container/VM may
garbage collect, but the worst case is that the singleton is created for
every access - it's more likely it'll hang around (override finalize to log
this and check).
Usual warning applies - the 'singleton' is VM bound (multiple VM's will each
have a singleton of their own), so it's only suitable for data which does
not change during the lifetime of the application.
tim
> -----Original Message-----
> From: Jon Tirs�n [SMTP:[EMAIL PROTECTED]]
> Sent: Monday, July 10, 2000 9:15 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Global Objects in EJB Containers?
>
> Well, actually: 1) no and 2) no.
>
> Simple reason: An EJB can not have static
> data-members.
>
> There are so many issues regarding this that I can not
> name them all. Transactions, security, thread-safety
> etc. etc. etc.
>
> --- Victor Langelo <[EMAIL PROTECTED]>
> skrev: > "More, Yogesh" wrote:
> >
> > > Fundamental questions..
> > >
> > > 1. Can I have global objects which created by a
> > session bean stay in memory
> > > even after the bean ceases to exist....for other
> > beans to share.
> >
> > Yes. You use static data members to hold references
> > to these objects. Be careful
> > that the garbage collector doesn't clear you class.
> > Or at least be prepared for
> > when it happens.
> >
> > >
> > >
> > > 2. Can I have singleton classes in a Container
> > environment shared by all
> > > EJBs?
> >
> > Yes. You can create a singleton class with only
> > static members. Same warning
> > about the GC as above.
> >
> > >
> > >
> > > Thanks,
> > > Yogesh
> > >
> > >
> >
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