On Monday, 7 April 2014 17:47:48 UTC-4, Sam Berlin wrote:
>
> I'd be open to any of the following:
>   a) Hard-error on a qualifer/bindingannotation on types
>   b) Support qualifer/bindingannotation on types, but fail if it also 
> exists on the variable
>

Makes sense. I do think one of them should be done before Guice 4.0 is out 
since that'll be the first release supporting Java 8 anyway. I'll try to 
cook up a patch for (a) and then (b) on top of it.
 

> Though, since this'd be a change to the way jsr330 things are interpreted, 
> seems like it'd be best to poll the jsr330 folks and make sure all various 
> implementations (Dagger, Spring, etc..) are on-board with the same solution.
>

Good point. The atinject list seems dead though, should I post there or 
manually poll Dagger, Spring, HK2, CDI, etc.?
 

>  sam
>
>
> On Mon, Apr 7, 2014 at 5:24 PM, Tavian Barnes <[email protected]<javascript:>
> > wrote:
>
>> Java 8 allows annotations to appear everywhere a type is used, which 
>> allows for things like
>>
>> Provider<@Named("name") Thing> provider;
>>
>> instead of
>>
>> @Named("name") Provider<Thing> provider;
>>
>> The first way, to me, seems more semantically accurate, because it reads 
>> "provider of named thing" rather than "named provider of thing." However, 
>> there would obviously be a lot of complication in choosing to support this 
>> syntax.  It would be difficult to use the new AnnotatedType reflection APIs 
>> and still support Java 6/7.  Ambiguous cases like
>>
>> @Named("name") Provider<@Named("otherName") Thing> provider;
>>
>> would have to be detected too.  Of the three choices:
>>
>> (1) Ignore binding annotations on types
>> (2) Support binding annotations on types
>> (3) Give a warning/error for binding annotations on types,
>>
>> I assume Guice is sticking with (1) for now?  If someone wrote a patchset 
>> to support AnnotatedTypes in a backwards-compatible way (strategy pattern 
>> for example), would (2), (3), or neither be most likely to get merged?
>>  
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>

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