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Re: [aspectj-users] pointcuts from a properties file
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Charlie,
Please see the Tracing examples in Chapter 3 of the Programming Guide
(http://dev.eclipse.org/viewcvs/indextech.cgi/~checkout~/aspectj-home/doc/progguide/examples-development.html)
to find out more about abstract pointcuts and library aspects. Several
chapters of our new book Eclipse AspectJ
(http://www.awprofessional.com/title/0321245873) go into more depth.
Wes is referring to the new AspectJ 5 load-time weaving support which is
configured using XML and allows you to define simple concrete aspects by
declaring pointcuts. Read more about it in the Developer's Notebook
(http://dev.eclipse.org/viewcvs/indextech.cgi/~checkout~/aspectj-home/doc/ajdk15notebook/index.html).
We are considering allowing this feature to be used for compile-time and
post-compile (binary) weaving too.
Matthew Webster
AOSD Project
Java Technology Centre, MP146
IBM Hursley Park, Winchester, SO21 2JN, England
Telephone: +44 196 2816139 (external) 246139 (internal)
Email: Matthew Webster/UK/IBM @ IBMGB, matthew_webster@xxxxxxxxxx
http://w3.hursley.ibm.com/~websterm/
"Wes Isberg" <wes@xxxxxxxxxxxxxx>@eclipse.org on 26/01/2005 01:37:50
Please respond to aspectj-users@xxxxxxxxxxx
Sent by: aspectj-users-admin@xxxxxxxxxxx
To: aspectj-users@xxxxxxxxxxx
cc:
Subject: Re: [aspectj-users] pointcuts from a properties file
wrt this...
> I can't really find the javadoc that says whether
> "execution"
> (or "call" or any of the other methods) takes a String or not.
These are pointcuts, not methods, and can be considered to
exist only at compile/weave-time. The documentation is in the
AspectJ programmers guide.
Matt's right about abstract aspects. I suspect you want to say
"public method execution in any type below package
com.alloyinc.quiz.admin". You could create a library aspect
abstract aspect DoingThing {
abstract pointcut withinTypes();
pointcut publicMethodsWithinTypes() : withinTypes()
&& execution(public * *(..));
before() : publicMethodsWithinTypes() { ... }
// more advice
}
then use it like this
aspect DoingMyThing extends DoingThing {
pointcut withinTypes() : within(com.alloyinc.quiz.admin..*);
}
I believe Adrian, et al are working on a way to allow you to
configure a subaspect pointcut like this with config tools.
(Still more cool things coming out of those guys!)
Wes
> ------------Original Message------------
> From: "Charles N. Harvey III" <charlieh@xxxxxxxxx>
> To: aspectj-users@xxxxxxxxxxx
> Date: Tue, Jan-25-2005 2:51 PM
> Subject: [aspectj-users] pointcuts from a properties file
>
> Hello.
> I would like to write an aspect and put it in a jar file and have it
> be re-used a lot. But, the classes that it will weave will change
> in each project. So the pointcut statement has to change each time.
>
> Consider this example:
>
----------------------------------------------------------------------------
> /**
> * pointcut defining which Action classes to weave into.
> */
> public pointcut adminAuth( ActionMapping mapping,
> ActionForm form,
> HttpServletRequest request,
> HttpServletResponse response )
> : ( execution( public * com.alloyinc.quiz.admin.*.*.execute(..)
> ) ||
> execution( public * com.alloyinc.poll.admin.*.*.execute(..)
> ) )
> && args( mapping, form, request, response );
>
> /**
> * Advice for <code>adminAuth</code> pointcut.
> */
> ActionForward around( ActionMapping mapping,
> ActionForm form,
> HttpServletRequest request,
> HttpServletResponse response )
> : adminAuth( mapping, form, request, response )
> {
> // some stuff that checks for login
> }
>
----------------------------------------------------------------------------
>
> I want to be able to switch the following with text from a properties
> file:
> : ( execution( public * com.alloyinc.quiz.admin.*.*.execute(..)
> ) ||
> execution( public * com.alloyinc.poll.admin.*.*.execute(..)
> ) )
>
> Can I do that? I can't really find the javadoc that says whether
> "execution"
> (or "call" or any of the other methods) takes a String or not. If it
> does,
> I would think that I could replace it with a property. If not, well,
> then
> I guess not.
>
> Thanks in advance if anyone knows the answer to this.
>
>
> Charlie
>
>
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> aspectj-users@xxxxxxxxxxx
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