Is the following possible :-)
0
for those "custom Servlet classes" who [implement
SingleThreadModel], they must be loaded with the same
ClassLoader :-) -- so they are in the same ["logical servlet
context"] ? :-)
1
or define a new Interface :-) :-)
javax.servlet.Please_load_me_with_the_same_ClassLoader_
even_if_now_it_is_already_very_busy_thanks_
very_much_in_advance_thanks_again_otherwise
_if_I_can_not_use_SingleTon_you_must_give_
me_1$_for_every_thread_!!!_haha :-) :-)
Bo
Oct.20, 2000
"Christopher K. St. John" wrote:
> Bryan Roach wrote:
> >
> > So, then, what if we are not explicitly setting up different servlet
> > contexts, so that our servlets just load into the default context? Are we
> > guaranteed that within the default context, we will only get one instance
> > of our singleton object?
> >
>
> I believe that's what recent-ish versions of the spec
> guarantee.
>
> (The default context is not distributable, but if it were,
> you'd have to deal with the possibility of multiple jvm's,
> each with its own singleton. That might matter for, say,
> a connection pool, where the db being connected-to would
> have to handle n times the number of connections)
>
> > For the singleton object to be workable, it would seem that you would
> > need a guarantee of NOT one for the whole servlet engine, but definitely
> > one for each logical servlet context.
> >
>
> I can imagine deployment scenarios where it made sense to share
> a connection pool globally, but in general I believe you are
> correct.
>
> (As before, anybody reading this should definitely either refer
> to the spec or ask one of the spec developers before taking any
> of it as gospel :-)
>
> -cks
>
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