I assume (from "...each thread will execute the rules...") your threads have their own workingmemory and once you've loaded the 500 records you call fireAllRules()?
 
If this is the case then the activations should be correct for the subset of records asserted but this could differ to the results you expected; for example:-
 
Rule 1
    when
        ObjectA()
        ObjectB()
    Then
        System.out.println("Rule 1 activated");
    end
 
All records
Record 1: ObjectA()
Record 2: ObjectA()
Record 3: ObjectB()
Record 4: ObjectB()
 
Subset 1 (records 1 - 2)
Record 1: ObjectA()
Record 2: ObjectA()
 
Subset 2 (records 3 - 4)
Record 3: ObjectB()
Record 4: ObjectB()
 
If you have two threads asserting each subset to their own WM and firing all rules; "Rule 1" will never be activated.
 
If you have two threads asserting each subset to a shared WM and fire all rules; "Rule 1" will be activated.
 
With kind regards,
 
Mike

From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of shilpa.raghavendra@wipro.com
Sent: 31 May 2007 11:11
To: rules-users@lists.jboss.org
Subject: [rules-users] Need Help on using rules in Multiple Threads

Hi,

 

            I need to know how to use rule engine in multiple thread environment, the situation as given below   

 

            I have to handle huge records nearly 40000 so I will create a thread contains 500 records and run it.

 

            Each thread will execute the rules but I am not getting the expected result.

 

            May be the threads object are conflicting due to multiple thread execution.

 

            Please help me to come out of it

 

Regards

Shilpa

 


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