[drools-user] How does the contains operator work

[Ramesh Bhaskar]

Hi,
   I had a doubt regarding the contains operator.
   Assume that I have an object of class  which had many attributes. 
And I have an object B which has a Vector of Objects A. Something like:

   public class A{
      //some attributes
      //some methods
   }

   public class B{
      //some attributes
      Vector Avector<A> = new Vector<A>()
  
      //some methods
   }

   is it possible to write a rule like this

   rule "test rule"
      when
         atype: A()
         btype: B(avector contains atype)
      then
         //do something else
   end


   This might not be syntactically exact. But basically want to know if 
contains can check object types and not just single attributes.

Thanks
Ramesh Bhaskar
        

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