Can you please tell me how you mean "directly referenced" ? - and how
"indirectly referenced" should be?
Thanks in advance
_____
Von: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Im Auftrag von Igor
Vaynberg
Gesendet: Donnerstag, 28. Dezember 2006 18:14
An: wicket-user@lists.sourceforge.net
Betreff: Re: [Wicket-user] wicket-contrib-javaee moved to Wicket-Stuff
no, there is no difference
you do not want stateless or stateful beans to be directly referenced by
wicket components, or anything that will end up in httpsession
-igor
On 12/28/06, Korbinian Bachl <[EMAIL PROTECTED]> wrote:
I believe there you have to differate:
a; stateless-sessionbeans: those are only "living" for 1 method call, then
returned to the EJB-pool, so i dont see here a danger
b, stateful-sessionbeans: those are "living" over the request and have to be
used in your Wicketsession and referenced there, they never (!) may be used
in a wicket page itself without the wicket session use as they would break
concurrent-user support and create a new bean every pageinstance recreation.
Are I'm wrong here?
Regards
Korbinian
_____
Von: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Im Auftrag von Igor
Vaynberg
Gesendet: Donnerstag, 28. Dezember 2006 17:37
An: wicket-user@lists.sourceforge.net
Betreff: Re: [Wicket-user] wicket-contrib-javaee moved to Wicket-Stuff
lets not forget the important part, assuming the ejb thing works just like
wicket-spring. things injected are actually proxies not beans themselves.
these proxies can be serialized safely - they do not have a hard link to the
underlying ejb bean. if you do not do this and keep a reference to an ejb
bean in wicket components two things can happen:
a) you get a not serializable exception when wicket/servlet container needs
to serialize something
b) worse, the bean is serializable and you drag it along with the wicket
components into your session ending up with a useless clone
-igor
On 12/28/06, Filippo Diotalevi <[EMAIL PROTECTED]> wrote:
On 12/28/06, Korbinian Bachl <[EMAIL PROTECTED]> wrote:
> Hi Filippo,
>
> just browsed through it and its really nice work. Especially if someone
> wants to have EJB3 persitence but not to use EJB3 Stateless Session Beans
to
> query it.
>
> However, the thing with the EjbAnnotation looks not so clear to me - i
mean,
> every IDE has J5EE support and so in Neatbeans for example i just need 2
> mouseclicks and i got my EJB called through a on the fly created call
> (including web.xml ref. update/creation) e.g:
Hi Korbinian,
yes, you are right, you can create your lookup methods (with your
IDE or writing the classes), in the same way you can extract beans
from Spring calling applicationContext.get("beanName").
However, I prefer to write less code and let the infrastructure be
responsible of doing all the boring stuff. Since Java EE 5 allows you
to inject ejb dependencies through the @EJB annotation, I thought it
would be useful to extend this functionality to wicket pages, in the
same way we have @SpringBean annotation for injecting spring beans.
--
Filippo Diotalevi
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