[forge-dev] JBoss and WebLogic
Luca Masini
luca.masini.mailing.list at gmail.com
Mon Aug 6 04:56:34 EDT 2012
Thank you for your feedback Richard.
I tried your proposal and it breaks something else because the annotated
class is used everywhere to convert the POJO, and on the log I can find
this line:
10:45:46,485 INFO [javax.enterprise.resource.webcontainer.jsf.renderkit]
(http--127.0.0.1-8080-2) WARNING: FacesMessage(s) have been enqueued, but
may not have been displayed.
sourceId=create:accountBeanAccountGroupsSelect[severity=(ERROR 2),
summary=(create:accountBeanAccountGroupsSelect: Validation Error: Value is
not valid), detail=(create:accountBeanAccountGroupsSelect: Validation
Error: Value is not valid)]
Regarding the solution I proposed, I agree that generated code must be
simple, but I really can't figure another way to inject an extended
persistence context inside a client object.
In case we factor out the converter and write an util class with a factory
that hide that complexity.
What do you think ?
2012/8/6 Richard Kennard <richard at kennardconsulting.com>
> Luca,
>
> Thanks for your time and help debugging this. I think we need to proceed
> with caution.
>
> We're basically talking about hacks to work around bugs in the app
> server/shortcomings in the EE spec. The problem is these hacks are going to
> get
> re-generated for every domain entity (potentially dozens of times). It's
> critical we try to keep our generated code as clean as possible. In
> particular, we
> must keep the 'semantic complexity' low.
>
> The solution you're suggesting (injecting a SessionContext, taking
> EJBObject using getBusinessInterface etc) sounds like a lot of 'semantic
> complexity' for
> new users to understand?
>
> It's really important we try to find the cleanest approach. We
> tried/rejected a lot of variations when developing the current code. Here's
> one that's not
> quite as nice as the current one, but may work properly across
> TomEE/Weblogic/JBoss. Could you try it for me?
>
> 1. Remove all references in the generated Facelets code to:
> converter="#{foo.converter}"
> 2. Remove the 'getConverter()' method inside each xxxBean and replace with
> a static inner class that looks like:
>
> @FacesConverter( forClass = xxx.class )
> public static class xxxConverter
> implements Converter {
>
> @Override
> public Object getAsObject( FacesContext context, UIComponent
> component, String value ) {
>
> // EntityManager injection not reliable on all platforms
>
> xxx entity = new xxx();
> entity.setId( Long.valueOf( value ) );
> return entity;
> }
>
> @Override
> public String getAsString( FacesContext context, UIComponent
> component, Object value ) {
>
> ...
> }
> }
>
> Here's a complete example:
>
>
> https://github.com/metawidget/metawidget/blob/master/integration-tests/faces/forge/src/main/java/com/test/view/PersonBean.java
>
> Regards,
>
> Richard.
>
> On 3/08/2012 9:17 PM, Luca Masini wrote:
> > The fact is that we have an extended persistente unit bound to the
> stateful ejb, so can't be injected or looked up.
> >
> > I've found a solution working on my three target App Server (TomEE,
> Weblogic, JBoss).
> >
> > Inject a SessionContext and take the EJBObject using the
> getBusinessInterface method.
> >
> > For some strange reason SessionContext and his Ejb have different
> lifecycle so we need to take it before it is returned to the jsf client.
> >
> > This way it works.
> >
> > Il giorno venerdì 3 agosto 2012, Richard Kennard ha scritto:
> >
> > Yes, you could try that. The history to this decision was:
> >
> > 1. The Converter needs to use an EntityManager to load the entity
> > 2. For some reason you cannot (yet) inject EntityManagers into
> FacesConverters
> >
> > So I made the Converter an inner class of the xxxBean, so that it
> could access the bean's EntityManager. However there would be other
> approaches, such as
> > looking up the EntityManager via JNDI or something.
> >
> > Regards,
> >
> > Richard.
> >
> > On 3/08/2012 8:15 PM, Thomas Frühbeck wrote:
> > > Did you think of separating Converter and backing bean
> implementation?
> > > AFAIK the backing bean _provides_ a converter e.g.:
> #{xxxxxBean.converter} but should not implement Converter itself?
> > >
> > > Thomas
> > >
> > > Am 03.08.2012 11:13, schrieb Luca Masini:
> > >> I'm going crazy to let the generated faces scaffolding run on
> both WLS and JBoss.
> > >>
> > >> Infact if I let the Bean implements the Converter interface then
> WLS works but JBoss complaints about missing method, it's like that the
> implemented
> > >> interface is the Local interface for the bean and no other method
> is found but those in the Converter interface itself.
> > >>
> > >> So I remove the interface and everything work without the
> getConverter method, getAsObject and getAsString are method of the now
> interface bean.
> > >>
> > >> On the counter side WLS is unable to call methods from the EL
> into faces files that are not part of the Converter interface.
> > >>
> > >> So I'm in a deadlock. I'm unable to let it works on both the Java
> EE 6 server. I'm sure that a solution exist, but whichi ?
> > >>
> > >> --
> > >> ****************************************
> > >> http://www.lucamasini.net
> > >> http://twitter.com/lmasini
> > >> http://www.linkedin.com/pub/luca-masini/7/10/2b9
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> > >>
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http://www.linkedin.com/pub/luca-masini/7/10/2b9
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