Re: [aspectj-dev] Extended pointcut definitions with metadata for Tiger

[Adrian Colyer <adrian_colyer@xxxxxxxxxx>]

> I was wondering if there will be enhancements to the pointcut model in
> AspectJ that allow matching against certain metadata tags. Say e.g. 
someone
> wanted to match on all calls to methods marked with @Caching, I would 
like
> to have the option to use something like:

This is in plan for the AspectJ "Java 5" support - there were a number of 
early discussions on this list in the planning phases of the 1.2 release: 
look for posts on type pattern extensions, these also discussed possible 
ways of matching join points based on annotations. In short, we plan to 
support both annotation matching at join points, and also a "declare 
annotation" mechanism. We haven't discussed binding annotation context 
information to formals in the advice, but it's something I've thought 
about a little and can see why you would want it. The design for this has 
yet to be done. 

Both JBoss AOP and AspectWerkz have some support for pointcuts that match 
on attributes, so you can get a feel for how it might look.

I'm always interested in user input on how folks would like annotation 
matching to work in the language....

-- Adrian
Adrian_Colyer@xxxxxxxxxx



Eric Bodden <eric@xxxxxxxxx> 
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28/06/2004 00:11
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[aspectj-dev] Extended pointcut definitions with metadata for Tiger 
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Hi, altogether.

I was wondering if there will be enhancements to the pointcut model in
AspectJ that allow matching against certain metadata tags. Say e.g. 
someone
wanted to match on all calls to methods marked with @Caching, I would like
to have the option to use something like:

call(@Caching * *.*(..))

Second question: If so, will one be able to pass attributes of those
annotations through to advice ("expose" them). E.g. if somebody declared
@Caching(STRATEGY_1), I would like to be able to expose STRATEGY_1 as 
usual.

Is such an extended model being planned or even specified already?

Thanks,
Eric

--
Eric Bodden
RWTH Aachen University
ICQ UIN: 12656220, Skype: ericbodden, PGP: BB465582
Website: http://www.bodden.de


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