[rules-users] JBoss Rule Trace feature with 5.0

[Wolfgang Laun]

On 15 November 2010 19:30, kkinjal <kinjal.khandhar at gmail.com> wrote:

>
> Hi All,
>
> I am able to print the logs that says which rule was fired and what is the
> id for it.Thanks Wolfgang!
>
> Is there any way I can print the conditions(when clause) that got executed
> and which condition failed to execute and the order of those conditions
> execution?
>

This has been frequently asked for, and the answer is "no". Conditions are
munched by the compiler/Rete builder, and there's no simple way of tracking
what goes on during this process. The network is too complex for easy
inspection
by a debugger.

Moreover, CEs may depend on bindings from preceding CEs, so the idea of
having additional rules for all individual conditions isn't sufficient. What
might do the trick is to write for a "production" rule
   rule r A(...) B(...) C(...)... then...end
additional rules
   rule r-1 A(...)  then...end
   rule r-2 A(...) B(...)  then...end
   rule r-3 A(...) B(...) C(...) then...end
   ...
and observe the agenda entries for these; if, say, r-1 and r-2 are around
but
r-3 isn't, then C(...) is currently failing. Subsequent conditions D(...)
arent't
relevant at this moment.

I think that these rules could be derived from the initial rule r (relying
on very
internal API calls). Any takers? ;-)

OTOH, if your CEs are simple and straightforward, a few queries might be
sufficient to provide enough data for telling you what iCE s not true.

-W


> The application which I am building has multiple conditions and I would
> like
> to see which condition failed and which got successfully executed.
>
> Please let me know.Appreciate any suggestion.
>
> Thanks,
> Kinjal
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