how to write ( A after max time B ) in CEP( Fusion ) Drools

Question

What is the best way to write a condition in drools CEP to infer ( A after max time B ) Example :

a : new A();
b : new B( this after [1m] )

The above example is not my need.

I need this :

a : new A();
b : new B( this after a , b.timestamp - a.timestamp <= 60000)

So i reformulate the question. Is another way to obtain the same result with less instructions ?

Thanks

Answer 1

Edit after clarification of Q

$a: A() $b: B( this after[ 0s, 60s ] $a )

This fires if B comes after A but not later than 60 seconds.