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

[Miles Wen (Updated) (JIRA)]

     [ https://issues.jboss.org/browse/JBRULES-3336?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Miles Wen updated JBRULES-3336:
-------------------------------

        Description: 
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"))

  was:
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"))

    Forum Reference: http://drools.46999.n3.nabble.com/rules-users-Could-not-parse-knowledge-when-using-not-contains-in-a-quote-leading-a-tt3631338.html  (was: http://drools.46999.n3.nabble.com/rules-users-Could-not-parse-knowledge-when-using-not-contains-in-a-quote-leading-a-tt3631338.html)

    
> Could not parse knowledge when using 'not contains' in a parentheses leading a '!'
> ----------------------------------------------------------------------------------
>
>                 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
>              Labels: notcontains, parentheses
>
> 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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