[jboss-jira] [JBoss JIRA] (JBRULES-3336) Could not parse knowledge when using 'not contains' in a parentheses leading a '!'

[Miles Wen (Created) (JIRA)]

Could not parse knowledge when using 'not contains' in a parentheses leading a '!'
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                 Key: JBRULES-3336
                 URL: https://issues.jboss.org/browse/JBRULES-3336
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: drools-compiler (expert)
    Affects Versions: 5.3.0.Final
         Environment: jdk 1.6u27 drools 5.3.0 final
            Reporter: Miles Wen
            Assignee: Mark Proctor


This code could not be parsed correctly:

rule "out"
    when
        Msg(!(set not contains "test"))
    then
end

I tried a few simple situations and found that when using 'not contains' operator in a '!' leading parentheses triggers this problem. If no '!' prefixing the parentheses,the program works like a charm...

The example above seemed so stupid(you can use a 'contains' operator instead), but this is the simplest toy example.And this problem would be looked more important if you want to write some logic like this:

Msg(!(set not contains "test" || !bool && string == "hello"))

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