[jboss-jira] [JBoss JIRA] (DROOLS-50) Compilation failure using null safe dereferencing and memberOf together

[Mario Fusco (JIRA)]

Mario Fusco created DROOLS-50:
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             Summary: Compilation failure using null safe dereferencing and memberOf together
                 Key: DROOLS-50
                 URL: https://issues.jboss.org/browse/DROOLS-50
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
            Reporter: Mario Fusco
            Assignee: Mario Fusco


Having a pattern like:

{code}
Attribute( this memberOf $atts || this memberOf $seq!.particle )
{code}

where $atts is bound to a list property and $seq.particle is also a list property. $seq may be null, hence the !. accessor, the compiler produces the following failure

Unable to Analyse Expression
$atts contains this || $seq.particle contains $seq != null && this

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