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

[Mario Fusco (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-50?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco resolved DROOLS-50.
-------------------------------

    Fix Version/s: 5.6
                   6.0.0.Alpha1
       Resolution: Done

    
> 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
>             Fix For: 5.6, 6.0.0.Alpha1
>
>
> 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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