[rules-users] Simultaneous queries against working memory

Drools 4.0.7 Are running drools queries against working memory thread safe? I know that inserts and retracts need to be synchronized but what about queries? I would am considering having multiple threads querying working memory for different facts at the same time. For example: final QueryResults results = workingMemory.getQueryResults("GetMCCObjects"); for (Iterator it = results.iterator(); it.hasNext(); ) { result = (QueryResult) it.next(); mccDelObj = (MerchantCategoryGroup) result.get("mccObjects"); fhMCCGroup = workingMemory.getFactHandle(mccDelObj); WMSyncdInsertRetract(fhMCCGroup, RETRACT); } Scott