OK,
I read from Martin Koubas answer on the CDI dev list, that our
ArrayList<T> producer result is not injectable into an injection point of
type ArrayList<String> and will implement it that way.
Cheers,
Arne
Am 06.07.13 19:00 schrieb "Mark Struberg" unter <strub...@yahoo.de>:
>I thought about this a bit now. This is a bit of a mixed bag.
>
>Another pov is:
>
>ArrayList<T> which gets erased to ArrayList<Object> should be treated as
>ArrayList.
>
>Now for the question: does a Producer for ArrayList also get used for an
>InjectionPoint of ArrayList<String>?
>In CDI 1.0 only the other way around was specified. We had this
>discussion with the Weld guys and also had this code in some CDI
>Extensions.
>
>Not an easy topic indeed.
>
>LieGrue,
>strub
>
>
>
>
>----- Original Message -----
>From: Arne Limburg <arne.limb...@openknowledge.de>
>To: "dev@openwebbeans.apache.org" <dev@openwebbeans.apache.org>
>Cc:
>Sent: Saturday, 6 July 2013, 10:18
>Subject: Re: OWB and generics
>
>Forgot to mention that T is an unbound type variable at class level:
>
>
>public class MethodTypeProduces1<T>
>
>and there is no subclass of MethodTypeProduces1
>
>
>Am 06.07.13 10:12 schrieb "Romain Manni-Bucau" unter
><rmannibu...@gmail.com>:
>
>>Wait, not sure google ate a part of the code or not but if a <T> then T
>>can
>>be String (like ArrayList itself)
>>Le 6 juil. 2013 09:18, "Arne Limburg" <arne.limb...@openknowledge.de> a
>>écrit :
>>
>>> Hi,
>>>
>>> I am currently struggling with the handling of generics in OWB, because
>>> CDI 1.1 TCK requires us to be much more clever than we are now in this
>>>area.
>>> However I stumbled about a test in our test-suite that seems to be
>>>wrong
>>> to me, but I would like to have another opinion.
>>> With my local implementation of the generic handling (which is much
>>>better
>>> than the one in trunk) the following tests fails:
>>> MethodProducer1Test.testPersonProducer
>>>
>>> Basically it tests if an ArrayList with an unbound type variable is
>>> injectable into an injection point of type ArrayList<String>:
>>>
>>> @Produces @Dependent @Named("ProMethodParameterized3")
>>>
>>> ArrayList<T> methodPT3() {...}
>>>
>>> and
>>>
>>> @Inject ArrayList<String> pt3;
>>>
>>> Reading 5.2.4 of the CDI 1.1 spec (the fourth bullet point) I would
>>> suggest that this should lead to an error since String is not
>>>assignable
>>> from Object (which is the upper bound of T).
>>>
>>>
>>> WDYT?
>>>
>>>
>>> Cheers,
>>>
>>> Arne
>>>
>
