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Also, Pointcuts are like static methods: they can be hidden but not
overridden.
And you cannot overload a pointcut name (e.g., with more or fewer
variables).
In this case the advice in the abstract aspect will run only on the join
points picked out
by the pointcut in the abstract aspect. the pointcut in the subaspect
does not override
but hides the superaspect pointcut of the same name (indeed, I thought we
had an
XLint warning for this.)
Normally the pointcut in the abstract aspect is itself abstract, for just
this reason.
Some people use the convention of another pointcut titled
{name}_default to
offer reusable pointcut for subaspects to consider.
Wes
------------Original Message------------
From: Thiago Bartolomei <thiagobart@xxxxxxxxx>
To: aspectj-users@xxxxxxxxxxx
Date: Fri, Oct-21-2005 3:54 AM
Subject: Re: [aspectj-users] Overriding pointcuts Hi,
try to
append target to your pointcut:
pointcut log(Fifo fifo) :
Logging.log(fifo) || execution(* Fifo.Get(..)) &&
target(fifo);
I think the problem is that the compiler needs to know
what to do with your fifo variable in all cases . Without the target, the
second part of the "or" would have no context exposure..
[]s
Thiago
T. Bartolomei
On 10/21/05, Sven
Apel <apel@xxxxxxxxxxxxxxxxxxxxxxx>
wrote:
Hi,
I
have a problem with overriding and reusing pointcuts. I want to extend
the
set of join points captured by the "log" pointcut in the aspect
"Logging":
abstract public aspect Logging
{
pointcut log(Fifo
fifo) : execution(* Fifo.Put(..)) &&
target(fifo);
before(Fifo
fifo) :
log(fifo)
{
System.out.println("--->
Fifo method
called");
}
}
For
that I want to use a further aspect that inherits from
"Logging":
public aspect ExtLogging extends
Logging
{
pointcut
log(Fifo fifo) : Logging.log(fifo) ||
execution(*
Fifo.Get(..));
}
The above example does not work
because ajc cannot bind "fifo" (inconsistent
binding).
The
following example also does not work:
public aspect ExtLogging
extends Logging
{
pointcut log() :
Logging.log(Fifo) || execution(* Fifo.Get(..));
}
This is because
"ExtLogging.log" must have the same signature than
"Logging.log". Other
variants that declare an argument list in
"ExtLogging.log" but do not
pass "fifo" to "Logging.log" also do not work
Is there a possibility
to override and reuse parent pointcuts that expect
arguments? Without
arguments the above example works!
Thanks in
advance
Sven
--
Dipl.-Inf. Sven Apel
Institute for
Technical and Business Information
Systems
Otto-von-Guericke-University
P.O. Box 4120, D-39016 Magdeburg,
Germany
Phone: ++49 (391) 67-11899, Fax: ++49 (391) 67-12020
Room:
29/108
E-Mail: apel@xxxxxxxxxxxxxxxxxxxxxxx
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