The workaround is to have multiple small pieces of advice that all call
whatever code you then want to run
pointcut havingAConnectionParameter1(Connection conn): call(* *(..)) &&
args(conn,..);
pointcut havingAConnectionParameter2(Connection conn): call(* *(..)) &&
args(*,conn,.. );
etc...
before(Connection c): havingAConnectionParameter1(c) {run(c);}
before(Connection c): havingAConnectionParameter2(c) {run(c);}
etc...
Andy.
2009/6/21 Tahir Akhtar <[email protected]>
> I tried combining such pointcuts with || .
> But now I am getting an "ambiguous binding of parameter(s) conn across '||'
> in pointcut" error when I try to advice the composed pointcut with an around
> advice.
> Is there any work around to this error?
>
> Regards
> Tahir Akhtar
>
>
> Andy Clement wrote:
>
> If you want to use args directly for binding, the normal (not all that
> pretty) solution right now is:
>
> pointcut havingAConnectionParameter1(Connection conn): call(* *(..))
> && args(conn,..);
> pointcut havingAConnectionParameter2(Connection conn): call(* *(..))
> && args(*,conn,.. );
> pointcut havingAConnectionParameter3(Connection conn): call(* *(..))
> && args(*,*,conn,.. );
> pointcut havingAConnectionParameter4(Connection conn): call(* *(..))
> && args(*,*,*,conn,.. );
> pointcut havingAConnectionParameter5(Connection conn): call(* *(..))
> && args(*,*,*,conn,.. );
> pointcut havingAConnectionParameter6(Connection conn): call(* *(..))
> && args(*,*,*,*,conn,.. );
>
> obviously you need as many variants as the max number of arguments,
> but more than 6/7 arguments then I think the code you are advising has
> other problems ;)
>
> there are open enhancement requests relating to this.
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=160509https://bugs.eclipse.org/bugs/show_bug.cgi?id=233718
>
> The second one is interesting as it discusses a lot of possible syntaxes.
>
> cheers,
> Andy.
>
> 2009/6/10 Tahir Akhtar <[email protected]>
> <[email protected]>:
>
>
> Hi,
> Is there a way to declare a pointcut that matches all method calls whose any
> parameter is of specific type (say java.sql.Connection).
>
> I see that following will match methods whose last (or only) parameter is of
> type Connection.
>
> pointcut havingAConnectionParameter(Connection conn): call(* *(..)) &&
> args(..,conn );
>
> And following will match methods whose first (or only) parameter is of type
> Connection.
>
> pointcut havingAConnectionParameter(Connection conn): call(* *(..)) &&
> args(conn, .. );
>
> But how can I match when I don't know the exact position or even number of
> parameters in advance?
>
>
> Regards
> Tahir Akhtar
>
>
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