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Re: [aspectj-users] problem with pointcut capturing the second ar gument of a constructor call
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Hi Elizabeth,
You're partly correct; the pointcut should have been:
pointcut emailConstruction(String[] to) :
call(public werner.ais.battery.util.Email.new(..))
&& args(*, to,..);
With "to", instead of String[], in the args list (I originally posted a version that got changed around when I was trying out different things!); I'm following the example on page 191 of the _Eclipse AspejctJ_ book (by Colyer, Clemet, Harley, and Webster). They list several wildcard patterns for binding the second parameter of an argument list:
args(*, arg2, *, *, *)
args(*, arg2, ..)
args(..,arg2,..)
args(..,arg2,*, *, *)
Where arg2, in my case, is "to". The first and last ones won't work for me, because they specify a determinate number of parameters after arg2; I'm trying to write a pointcut which will capture 2 constructors-- one with 2 arguments after "to", and one with a variable number (varargs) parameter after "to". For both, I know that "to" is the second parameter, but I don't know how many arguments will follow it, so the second option above seemed to be the best choice, but I cannot seem to get it to compile. Even with changing "String[]" to "to" in the args list, it still give me the same compile error: "Syntax error on token ";", Type expected after this token".
I did also try the way you suggest: "args(*, String[] to, ..)", but that gives me 2 errors: the original error, and "Syntax error on token "to"; ")" expected", so I don't think that's the way to go. (Thanks for the suggestions, though-- it did help me find a mistake!).
This is driving me nuts..If anyone has any suggestions, I'd really appreciate it!
Thanks,
Tim
On 10/4/07, Echlin Harmer, Elizabeth
<echline@xxxxxxx> wrote:
Hi
Tim
Is the
problem that you have declared you are collecting context "emailConst(String[]
to)" but you haven't bound it to any args?
i.e.
should it be "&& args(*, String[] to,
..);"
Elizabeth
This really has me stumped...according to everything
I've read, I think the pointcut below should accomplish what I need, but I
cannot get it to compile (I'm getting the following compile error:
"Syntax error on token ";", Type expected after this token").
Here is
the pointcut definition:
pointcut
emailConstruction(String[] to) :
call(public werner.ais.battery.util.Email.new(..))
&& args(*, String[] ,..);
I'm trying to
define a pointcut on a constructor call for the Email class, and I want to
capture the second argument (which is a String array). The error message
is coming from the last line of the pointcut (the args(*, String[], ..)
part). I'm stumped...Does anyone know what I might be doing wrong?
Any suggestions would be very much
appreciated!
Thanks,
Tim
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