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Affects:

Release Notes
Fix Build:
CR1
QE Test Coverage:
+
Target Release:

7.7.0.GA
Workaround:

Workaround Exists
Workaround Description:

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The customer can use instead "Not In" operator

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The customer can use instead "Not In" operator
Git Pull Request:
https://github.com/kiegroup/drools/commit/9ac0e309d716606c8b07085386d13fde0cd7f2ac
Steps to Reproduce:

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Drl used:
package com.rule;
import com.rule.Person;
rule "Sample Rule"
salience 13
dialect "mvel"
when
$person:Person(!(name in ('value1','value2','value3'))) // doesnt work

//$person:Person((name in ('value1','value2','value3'))) // Works without ! symbol
then
$person.status = "active";
end

"Note: I know if i use 'not in' operator which gives the expected result. In my use case i want to use ! and i don't want to change the condition to $person:Person((name not in ('value1','value2','value3'))) to achieve same behaviour."

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Drl used: package com.rule; import com.rule.Person; rule "Sample Rule" salience 13 dialect "mvel" when $person:Person(!(name in ('value1','value2','value3'))) // doesnt work //$person:Person((name in ('value1','value2','value3'))) // Works without ! symbol then $person.status = "active"; end "Note: I know if i use 'not in' operator which gives the expected result. In my use case i want to use ! and i don't want to change the condition to $person:Person((name not in ('value1','value2','value3'))) to achieve same behaviour."

Use case: The drls are built dynamically and want to use ! along with In,not in and other operators.

Error:
" Unable to Analyse Expression !(name in ("value1","value2","value3")):
[Error: unexpected token: ]
[Near :

{... !(name in ("value1","value2"," ....}

] "

is caused by

DROOLS-4903 In constraints fail to compile if negated or inside a forall pattern