[rules-users] Rule Templates with empty cells

[jschmied]

Hi!

If I write rules in a decision table I can leave cells empty if I don't need
to use all of the conditions in a row.

How can I do this with the ExternalSpreadsheetCompiler? 

I would need something like:

rule "rule_@{row.rowNumber}"
    when
       $s : MyType1()
@ifDefined{field1}       $e : MyType2(val1 == "@{field1}") from $s.SUB;
@ifDefined{field2}       $e : MyType2(val2 == "@{field2}") from $s.SUB;
    then
         retract($s);
end


Thanks

Juergen
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