[jboss-jira] [JBoss JIRA] (DROOLS-603) Make isA behave like instanceof when non-trait classes are involved

[Davide Sottara (JIRA)]

Davide Sottara created DROOLS-603:
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             Summary: Make isA behave like instanceof when non-trait classes are involved
                 Key: DROOLS-603
                 URL: https://issues.jboss.org/browse/DROOLS-603
             Project: Drools
          Issue Type: Enhancement
            Reporter: Davide Sottara
            Assignee: Mark Proctor


"isA" has a similar semantics to "instanceof", but works with combinations of traitable beans, trait proxies and trait classes.
Currently, it does not work reliably when the left operand is a non-trait(able) object. It may try to access the internal trait data structures, which are not present, potentially throwing exceptions. 
For these cases, "isA" should not try to resolve trait types, but should fall
back to the standard java "instanceof" operator.



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