Yes here is the full thing.

function List doEventCodesExist( Submission submission, EntityManager entityManager )
{
   return SubmissionReviewRulesActionHelper.checkIfEventCodesExist( submission, entityManager );
}

rule "SECOND Event Codes must not exist - EPC"
// 4(2)
    when
        $event: Event( );
        $submission: Submission( );
        $entityManager : EntityManager( );
        $changedEventCodes : List( ) from doEventCodesExist( $submission, $entityManager );
        eval( $changedEventCodes.size() > 0 );
    then
        $event.addReviewIssue( new ReviewIssue( $event, $submission, SubmissionReviewConstants.SUBMISSION,
           ReviewCriticality.CRITICAL, SectionFiltersEnum.SUBMISSION,
           $changedEventCodes + " submissionReview.submission.eventCodesAlreadyExist" ) );
end

----- Original Message ----
From: Mark Proctor <mproctor@codehaus.org>
To: Rules Users List <rules-users@lists.jboss.org>
Sent: Friday, August 15, 2008 1:29:16 PM
Subject: Re: [rules-users] How do I assign a local variable from a function call?

Did you try adding types to your functions like the documentation says?

samd wrote:

Nobody knows?


samd wrote:

All I want to do is something simple like the following:

$changedList: java.util.List( ) from getChangedList( $x, $y );

Then in the same .drl file a function something like:

function List getChangedList( $x, $y )
{
    return JavaClass.staticDoSomethingToGetListMethod( $x, $y);
}

I have tried doing this and I get:

Unable to build expression for 'from' node 'getChangedList( $x, $y)'

It looks like there is supposed to be something in between the from and
the function? I have been looking for examples for something like this and
have not found any.

Thanks