[rules-users] Matching strings in two arrays

Drools 5.1.0 I have a need to match list of incoming strings to those in the rule. All the strings in the fact object needs to exists in the rule. I have a large set of rules around 5000. In general I have around 4 conditions per rule and its taking in average around 30- ~40 ms to go through the 5000 rules. However the following construct that I am using to match the incoming set of input strings is adding on the average 200ms to rules execution. Is there a more efficient way to do this? MyContext is the fact class and classes is array of String. I need to make sure that the classes array contains all three strings TestString1, TestString2 and TestString3. MyContext(DclassesList : classes) exists( String(this matches "TestString1") || String(this matches "TestString2") || String(this matches "TestString3") from DclassesList) Of course each rule in the 5000 can have diff set of strings to match. Thanks