[rules-users] Correlation of events

[Framewala, Ashfaq Y]

Hi, 

I am working on a system where I need to correlate few error conditions
happening in the network infrastructure. I have gone through the
documentation for Jboss rules engine (Drools) and I am planning to use
it for the correlation purpose. 

Can anyone let me know a way in which I can get an object from
workingmemory in the "then" part of the rule? For e.g., I need the
following


rule "new error"
	when 
		$error : Error (state == NEW_ERROR)
	then
		(search workingmemory if this error was already
registered)
		if (found)
		{
	
$errFromWorkingMemory.setLastTimestamp(currentTimestamp)
			retract($error);
		}
End

Thanks,
Ashfaq

		
				

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