[seam-dev] XML Configuration of producer fields

[Stuart Douglas]

On 24/08/2010, at 9:16 PM, Pete Muir wrote:

> Agreed, this would be very useful. 
> 
> The only (practical) issue I see is that Weld currently doesn't expect AnnotatedTtypes to be respected for EE-style injection (in some/all cases). I suspect that it should (nb. this is large a change in the container integration contract).
> 
> On 24 Aug 2010, at 09:39, Stuart Douglas wrote:
> 
>> I think that seam-xml needs to ability to programatically add resource (and other) producer fields.  My proposed syntax is:
>> 
>> <s:EntityManager>
>> <s:producerField/>
>> <s:PersistenceContext unitName="customer" />
>> <my:CustomerDatasource/>
>> </s:EntityManager>
>> 
>> which would be equivalent to:
>> 
>> @Produces
>> @PersistenceContext(unitName="main")
>> @CustomerDatasource
>> EntityManager entityManager;
>> 
>> This will also support other types of producer fields, such as weld extension generic bean producer fields and primitives:
>> 
>> 
>> <s:String>
>> <s:producerField/>
>> <my:ApplicationVersion />
>> <s:value>3.0.0.GA</s:value>
>> </s:String>
> 
> I think it should be:
> 
> <ee:EntityManager>
> <ee:Produces />
> <ee:PersistenceContext unitName="customer" />
> <my:CustomerDatasource/>
> </ee:EntityManager>
> 
> What was the reason for introducing the special producerField keyword?

It was to distinguish these from normal bean declarations, however @Produces will never be applied directly to a bean class, so that should be enough.

Stuart