Working memory is shared between rules. That is it's purpose. :) ________________________________ From: Sameer Pokarna <sameer(a)emsquare.net&gt; To: rules-users(a)lists.jboss.org Sent: Tuesday, October 6, 2009 9:05:20 AM Subject: [rules-users] Usage of working memory for sharing data between action and subsequent conditions Hi, I am new to Drools and am facing an issue I do not is supported here. I have particular record types that the rules process. As I process them, I want to maintain a map (or persist) of IDs of all records processed. I believe this can be done in actions. In some conditions, I want to lookup values in this map/table/persistent memory to see if this ID is present. There are more such cases in my usage where I can make use of a shared memory between rules. Does Drools have any feature which can be used for this purpose? I looked at the working memory, but that seems to be relevant for working data, rule bases, etc. and not as a shared memory. Am I right in my understanding? Thanks and regards, Sameer