springframework-developer

RE: [Springframework-developer] Re: TypedMapFactory?

[Oliver H. <Ol...@ou...>]

> On the other hand, when it comes to method signatures, my=20
> understanding is that the bounding information is available=20
> through reflection. So you can tell that a method takes a=20
> List<String> and not a List. I'm not 100% sure on this (and=20
> confirmation by anybody would be good), but I presume this is=20
> what Rob is basing his statement below on.
=20
This is correct - Java 1.5 does keep generic type information relating
to fields and method signatures (accessible using the new #getGeneric*
methods on Field and Method). I'm taking advantage of this for type
inference in Spring Rich's data binding system.

Ollie

Re: [Springframework-developer] Re: TypedMapFactory?

[Rob H. <rob...@in...>]

Exactly that.We can find that a method is declared to return a 
paramerized type and that its arguments are parameterized. Based on this 
we can have something like:

setMyMap(Map<String, Integer>)

And at runtime see the parameterization for the Map.

Oliver Hutchison wrote:

>>On the other hand, when it comes to method signatures, my 
>>understanding is that the bounding information is available 
>>through reflection. So you can tell that a method takes a 
>>List<String> and not a List. I'm not 100% sure on this (and 
>>confirmation by anybody would be good), but I presume this is 
>>what Rob is basing his statement below on.
>>    
>>
> 
>This is correct - Java 1.5 does keep generic type information relating
>to fields and method signatures (accessible using the new #getGeneric*
>methods on Field and Method). I'm taking advantage of this for type
>inference in Spring Rich's data binding system.
>
>Ollie
>
>
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-- 
Rob Harrop
Principal Consultant
Interface21 - Spring Services from the Source
http://www.springframework.com