[rules-users] Parameterized Queries?

[Edson Tirelli]

   I think Mark just updated documentation for that and it will be included
in 4.0.2.
   Meanwhile:

query "find errors for site"( int $param1, String $param2, ...)
    validationError: ValidationError(this.siteId == $param1)
end

   Parameter type is optional, and you can have as many parameters as you
need.

   []s
   Edson

2007/9/5, Robert Crawford <crawford at kloognome.com>:
>
> Does anyone know how to use parameterized queries? I'm trying to retrieve
> ONLY the results for a single installation, with a query like this:
>
> query "find errors for site"
>     validationError: ValidationError(this.siteId == $1)
> end
>
> QueryResults results = session.getQueryResults("find errors for site", new
> Object[] {siteId});
>
> I get the error
>
> "org.drools.RuntimeDroolsException: Exception executing predicate
> org.drools.base.mvel.MVELPredicateExpression
>
> Caused by: org.mvel.PropertyAccessException: unable to resolve property:
> $1"
>
> I'm pretty sure I'm not writing the rule correctly in the DRL; does anyone
> know the correct syntax? The manual isn't clear on this.
>
> Thanks!
>
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>



-- 
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
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