Don't create the EnumSet and TransactionEvent unless it is required ------------------------------------------------------------------- Key: JBTM-3165 URL: https://issues.jboss.org/browse/JBTM-3165 Project: JBoss Transaction Manager Issue Type: Enhancement Components: JTS Affects Versions: 5.9.5.Final Reporter: Michael Musgrove Assignee: Stuart Douglas Priority: Minor Fix For: 5.next The TransactionManager (https://github.com/jbosstm/narayana/pull/1469/files#diff-198455dd7f41f7bc...) contains code to notify listeners of the transaction lifecycle which can be improved from a performance perspective. In particular its use of an EnumSet can be improved.