Re: [aspectj-users] Multiple annotations using single declare @type?

[Matthew Adams <matthew@xxxxxxxxxxxxxxx>]

On Tue, Sep 4, 2012 at 10:26 AM, Andy Clement <andrew.clement@xxxxxxxxx> wrote:

There are quite a few uses for named type patterns.  This bug was the
original one to talk about them:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=63304

proposing a syntax like this:

declare typename: PublicFinalType: public final *;

That syntax would be fine, I suppose, but certainly different than named pointcuts, which I was trying to say close to by sticking to the principal of least surprise.  Either way, that capability would be good.

 

I hadn't thought about it being used to get around the multiple annos
on declare @type though. Mind you, it is even more work to implement
that than to implement the enhancement for declare @type !

Oh, noooooooooooo!!!!!  :P

 

cheers,
Andy

On 29 August 2012 20:43, Matthew Adams <matthew@xxxxxxxxxxxxxxx> wrote:
> Hey, you know, I was thinking that if I could name type expressions
> like I can name pointcuts, then this wouldn't be as big a deal.
>
> Consider:
>
> declare @type : org.example.foo.Bar+ : @Goo;
> declare @type : org.example.foo.Bar+ : @Hoo;
>
> I have no idea what a good syntax might be to name type expressions.
> Perhaps a new pointcut designator like "type"?  Then, you could write:
>
> pointcut thoseAnnoyingTypes() : type(org.example.foo.Bar+); /*
> admittedly not really a pointcut... */
>
> declare @type : thoseAnnoyingTypes() : @Goo;
> declare @type : thoseAnnoyingTypes() : @Hoo;
>
> I'm pretty sure named type expressions would be useful elsewhere, like
> in "declare error" & "declare warning" statements, and pointcut
> designators "handler", "within", etc:
>
> pointcut thoseAnnoyingTypes() : type(org.example.foo.Bar+);
>
> declare @type : thoseAnnoyingTypes() : @Goo, @Hoo;
>
> pointcut withinAnnoyingTypes() : within(thoseAnnoyingTypes());
>
> Thoughts?
>
> On Thu, Aug 16, 2012 at 1:08 PM, Andy Clement <andrew.clement@xxxxxxxxx> wrote:
>>
>> Hi Matthew,
>>
>> I guess you mean https://bugs.eclipse.org/bugs/show_bug.cgi?id=356594
>> - which you raised :)
>>
>> I just had a quick look and added a testcase but the implementation
>> isn't as trivial as I'd hoped.  A lot of infrastructure is just
>> dealing with one annotation per declare anno statement.
>>
>> cheers,
>> Andy
>>
>> On 16 August 2012 07:13, Matthew Adams <matthew@xxxxxxxxxxxxxxx> wrote:
>> > Hi all,
>> >
>> > I recall this was a question a couple of years ago.
>> >
>> > Can you now use a single "declare @type" statement to introduce several
>> > annotations at once?  That way, instead of:
>> >
>> > declare @type : org.example.foo.Bar+ : @Goo;
>> > declare @type : org.example.foo.Bar+ : @Hoo;
>> >
>> > you could write:
>> >
>> > declare @type : org.example.foo.Bar+ : @Goo, @Hoo;
>> >
>> > Thanks,
>> > Matthew
>> > --
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>> >
>> >
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>
>
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