[jboss-jira] [JBoss JIRA] Commented: (JBRULES-1040) Multi-pattern accumulate support

[Geoffrey De Smet (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBRULES-1040?page=comments#action_12378040 ] 
            
Geoffrey De Smet commented on JBRULES-1040:
-------------------------------------------

As far as I can tell, it's not working:

rule "constraintsBroken"
  when
    $multipleQueensHorizontal : Long()
    from accumulate(
        $q1 : Queen($id : id, $y : y);
        Queen(id > $id, y == $y);
      , count($q1)
    );
    $multipleQueensAscendingDiagonal : Long()
    from accumulate(
        $q2 : Queen($id : id, $ascendingD : ascendingD);
        Queen(id > $id, ascendingD == $ascendingD);
      , count($q2)
    );
    $multipleQueensDescendingDiagonal : Long()
    from accumulate(
        $q3 : Queen($id : id, $descendingD : descendingD);
        Queen(id > $id, descendingD == $descendingD);
      , count($q3)
    );
  then
    scoreCalculator.setScore( - $multipleQueensHorizontal - $multipleQueensAscendingDiagonal - $multipleQueensDescendingDiagonal));
end


this gives problems on the ";" at each end.

so I tried this:
rule "constraintsBroken"
  when
    $multipleQueensHorizontal : Long()
    from accumulate(
        $q1 : Queen($id : id, $y : y)
        Queen(id > $id, y == $y)
      , count($q1)
    );
    $multipleQueensAscendingDiagonal : Long()
    from accumulate(
        $q2 : Queen($id : id, $ascendingD : ascendingD)
        Queen(id > $id, ascendingD == $ascendingD)
      , count($q2)
    );
    $multipleQueensDescendingDiagonal : Long()
    from accumulate(
        $q3 : Queen($id : id, $descendingD : descendingD)
        Queen(id > $id, descendingD == $descendingD)
      , count($q3)
    );
  then
    scoreCalculator.setScore( - $multipleQueensHorizontal - $multipleQueensAscendingDiagonal - $multipleQueensDescendingDiagonal));
end

which yields:
aused by: org.drools.rule.InvalidRulePackage: [69,6]: unknown:69:6 mismatched token: [@178,2093:2093=',',<11>,69:6]; expecting type RIGHT_PAREN[69,14]: unknown:69:14 Unexpected token '$q1'
	at org.drools.rule.Package.checkValidity(Package.java:412)

> Multi-pattern accumulate support
> --------------------------------
>
>                 Key: JBRULES-1040
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-1040
>             Project: JBoss Rules
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: Drl Parser/Builder, Reteoo
>    Affects Versions:  4.0.0.GA
>            Reporter: Geoffrey De Smet
>         Assigned To: Edson Tirelli
>             Fix For: 4.0.2
>
>
> [Edson said there might be already such an issue, but I couldn't find it looking through jira.]
> Something like this should be possible:
>   $multipleQueensHorizontal : Long()
>     from accumulate(
>         $q1 : Queen($id : id, $y : y);
>         Queen(id > $id, y == $y);
>       , count($q1)
>     );

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