RE: [aspectj-users] Question about using within/cflow pointcutswiththird

["Neil Redding" <nredding@xxxxxxxxx>]

Thanks Ron - a couple followup questions below:

> To weave within the hibernate classes, you would need 
> Hibernate to be on your inpath (i.e., to weave the Hibernate 
> jars). One way you might do this without building a modified 
> version of Hibernate would be load-time weaving.

I've been assuming LTW is expensive - is it not? I think I'll give it a
go, since I don't want to modify Hibernate unless I have to. 

> Another option would be to use cflow of calls into Hibernate. 
> The calls from your code into Hibernate can be woven without 
> weaving into Hibernate. E.g.,
> 
> 	pointcut callHibernate(): 
> 		call(* org.hibernate..*(..)) ||
> call(org.hibernate..*.new(..));
> 	pointcut inHibernate(): cflow(callHibernate());
> 
> 	pointcut setterNotCalledByHibernate():
> 		!calledByHibernate() && execution(* *.set*(..));

Right; the issue is that I need to exclude Hibernate joinpoints
regardless of where they're called from - it's not always from "my
code". 

> Also, note that your original pointcut is rather expensive 
> (it would weave into *all join points* in Hibernate such as 
> field get/set, handler etc). If you were going to weave into 
> Hibernate you'd want something like:
> 
> 	pointcut hibernate(): 
> 		(execution(* *(..)) || execution(* new(..))) &&
> 		within(org.hibernate..*);

Thanks, I was a bit method-invocation-myopic there for a moment - didn't
consider the other joinpoint types. :-)

Dumb question (?): Why "execution(* new(..))" in the pointcut
immediately above - isn't this covered by "execution(* *(..))"?

Cheers,
Neil