I think that there is a real use case for something similar to the @Unwrap feature of seam 2. I think that it would be possible to implement something like this: @ConversationScoped public class ManagedPersistenceContext { EntityManager entityManager; @Unwrap @SomeQualifier public EntityManager produce(InjectionPoint injectionPoint) { entityManager.joinTransaction(); return entityManager; } } public class MyClass { @Inject @SomeQualifier EntityManager entityManager; } the way I envisage this working is that a proxy gets injected into MyClass, and this proxy calls ManagedPersistenceContext.produce to resolve the correct EntityManager to pass the call to every time a method is invoked on the proxy. I am pretty sure I can implement this in weld-extensions using JDK proxies, does this sound like a good idea? Stuart _______________________________________________ seam-dev mailing list seam-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/seam-dev

wrote:

I don't think I will be able to implement the injection of InjectionPoint into the producer method, but other than that it should be possible to implement. Stuart On 20/04/2010, at 8:15 PM, Pete Muir wrote: > Yes, I agree. I had raised this issue during spec development - that there was no truly stateless scope in CDI, where the bean instance was created every time. > > I would like to hear from the 299 EG about this as well. > > On 20 Apr 2010, at 04:57, Stuart Douglas wrote: > >> I think that there is a real use case for something similar to the @Unwrap feature of seam 2. >> >> I think that it would be possible to implement something like this: >> >> @ConversationScoped >> public class ManagedPersistenceContext >> { >> >> EntityManager entityManager; >> >> @Unwrap >> @SomeQualifier >> public EntityManager produce(InjectionPoint injectionPoint) >> { >> entityManager.joinTransaction(); >> return entityManager; >> } >> } >> >> public class MyClass >> { >> @Inject @SomeQualifier EntityManager entityManager; >> } >> >> the way I envisage this working is that a proxy gets injected into MyClass, and this proxy calls ManagedPersistenceContext.produce to resolve the correct EntityManager to pass the call to every time a method is invoked on the proxy. >> >> I am pretty sure I can implement this in weld-extensions using JDK proxies, does this sound like a good idea? >> >> Stuart >> _______________________________________________ >> seam-dev mailing list >> seam-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/seam-dev > _______________________________________________ seam-dev mailing list seam-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/seam-dev

On 10-04-20 11:31 AM, Lincoln Baxter, III wrote: Wait -- there's no "Prototype" or "always new" scope? @Dependent or @New, from case to case. --Lincoln On Tue, Apr 20, 2010 at 6:45 AM, Stuart Douglas < stuart(a)baileyroberts.com.au&gt; wrote: > I don't think I will be able to implement the injection of InjectionPoint > into the producer method, but other than that it should be possible to > implement. > > Stuart > > > On 20/04/2010, at 8:15 PM, Pete Muir wrote: > > > Yes, I agree. I had raised this issue during spec development - that > there was no truly stateless scope in CDI, where the bean instance was > created every time. > > > > I would like to hear from the 299 EG about this as well. > > > > On 20 Apr 2010, at 04:57, Stuart Douglas wrote: > > > >> I think that there is a real use case for something similar to the > @Unwrap feature of seam 2. > >> > >> I think that it would be possible to implement something like this: > >> > >> @ConversationScoped > >> public class ManagedPersistenceContext > >> { > >> > >> EntityManager entityManager; > >> > >> @Unwrap > >> @SomeQualifier > >> public EntityManager produce(InjectionPoint injectionPoint) > >> { > >> entityManager.joinTransaction(); > >> return entityManager; > >> } > >> } > >> > >> public class MyClass > >> { > >> @Inject @SomeQualifier EntityManager entityManager; > >> } > >> > >> the way I envisage this working is that a proxy gets injected into > MyClass, and this proxy calls ManagedPersistenceContext.produce to resolve > the correct EntityManager to pass the call to every time a method is invoked > on the proxy. > >> > >> I am pretty sure I can implement this in weld-extensions using JDK > proxies, does this sound like a good idea? > >> > >> Stuart > >> _______________________________________________ > >> seam-dev mailing list > >> seam-dev(a)lists.jboss.org > >> https://lists.jboss.org/mailman/listinfo/seam-dev > > > > > _______________________________________________ > seam-dev mailing list > seam-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/seam-dev > -- Lincoln Baxter, III http://ocpsoft.com http://scrumshark.com "Keep it Simple" _______________________________________________ seam-dev mailing listseam-dev@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/seam-dev

No, that is not the same as a fully stateless scope where the object is looked up everytime it is invoked, not everytime it is injected. On 20 Apr 2010, at 17:07, Lincoln Baxter, III wrote: > Ok yeah, thats what I thought. > > @Produces @New -- would that not work? > > On Tue, Apr 20, 2010 at 12:06 PM, Marius Bogoevici < marius.bogoevici(a)gmail.com&gt; wrote: > On 10-04-20 11:31 AM, Lincoln Baxter, III wrote: >> Wait -- there's no "Prototype" or "always new" scope? > @Dependent or @New, from case to case. > >> >> --Lincoln >> >> On Tue, Apr 20, 2010 at 6:45 AM, Stuart Douglas < stuart(a)baileyroberts.com.au&gt; wrote: >> I don't think I will be able to implement the injection of InjectionPoint into the producer method, but other than that it should be possible to implement. >> >> Stuart >> >> >> On 20/04/2010, at 8:15 PM, Pete Muir wrote: >> >> > Yes, I agree. I had raised this issue during spec development - that there was no truly stateless scope in CDI, where the bean instance was created every time. >> > >> > I would like to hear from the 299 EG about this as well. >> > >> > On 20 Apr 2010, at 04:57, Stuart Douglas wrote: >> > >> >> I think that there is a real use case for something similar to the @Unwrap feature of seam 2. >> >> >> >> I think that it would be possible to implement something like this: >> >> >> >> @ConversationScoped >> >> public class ManagedPersistenceContext >> >> { >> >> >> >> EntityManager entityManager; >> >> >> >> @Unwrap >> >> @SomeQualifier >> >> public EntityManager produce(InjectionPoint injectionPoint) >> >> { >> >> entityManager.joinTransaction(); >> >> return entityManager; >> >> } >> >> } >> >> >> >> public class MyClass >> >> { >> >> @Inject @SomeQualifier EntityManager entityManager; >> >> } >> >> >> >> the way I envisage this working is that a proxy gets injected into MyClass, and this proxy calls ManagedPersistenceContext.produce to resolve the correct EntityManager to pass the call to every time a method is invoked on the proxy. >> >> >> >> I am pretty sure I can implement this in weld-extensions using JDK proxies, does this sound like a good idea? >> >> >> >> Stuart >> >> _______________________________________________ >> >> seam-dev mailing list >> >> seam-dev(a)lists.jboss.org >> >> https://lists.jboss.org/mailman/listinfo/seam-dev >> > >> >> >> _______________________________________________ >> seam-dev mailing list >> seam-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/seam-dev >> >> >> >> -- >> Lincoln Baxter, III >> http://ocpsoft.com >> http://scrumshark.com >> "Keep it Simple" >> >> _______________________________________________ >> seam-dev mailing list >> >> seam-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/seam-dev >> >> >> > > > > > -- > Lincoln Baxter, III > http://ocpsoft.com > http://scrumshark.com > "Keep it Simple" > _______________________________________________ > seam-dev mailing list > seam-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/seam-dev