[rules-users] No globals in functions?

[Edson Tirelli]

   Allen,

   There is a technical explanation behind that and we never had the time to
find a way to overcome this limitation. What you can do, although not ideal,
is to send the global as a parameter:

funcion void foo( Logger log, String cond )
{
...
}

rule XYZ
when
then
    foo( log, someString );
end

   If you or anyone would like to help improving this, let us know and we
can discuss ways into doing it.

   []s
   Edson

2008/10/9 Bagwell, Allen F <afbagwe at sandia.gov>

>
> There's probably an easy explanation for this. I was wondering about why
> functions inside of rule files can't access globals?
>
> For example, I have a log4j logger that I pass into my rule files via a
> global.  The logger should never be a part of working memory. It's just
> there to capture valuable feedback.
>
> But I can't do this:
>
> global Logger log;
>
> function void foo(String cond)
> {
>    if (cond == "error")
>        log.error("I saw an error");
> }
>
> Because the compiler says that in the function it can't resolve 'log'.
>
> -A
>
> Allen F. Bagwell
> e-mail:  afbagwe at sandia.gov
> phone:  505/284-4517
> fax:  505/ 844-7886
>
> There is no monument dedicated to the memory of a committee. -- Lester J.
> Pourciau
>
>
>
>
> _______________________________________________
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>
>


-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss, a division of Red Hat @ www.jboss.com
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