Re: [rules-users] Alternative to instanceof when matching against multiple concrete types under the same hiearchy?

[Travis Smith]

I think this will work for your scenario:

declare Interface 
end 

declare ConcreteType1 extends Interface 
end 

declare ConcreteType2 extends Interface 
end 

rule "asdf" 
when 
    OtherType( $member : member ) 
    (
     $type : ConcreteType1(this == $member) 
       or
     $type : ConcreteType2(this == $member) 
    )
then 
    // do whatever with $member 
end 


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