[jboss-jira] [JBoss JIRA] Updated: (JBAS-5908) ClientUserTransactionObjectFactory is inefficient

ClientUserTransactionObjectFactory is inefficient ------------------------------------------------- Key: JBAS-5908 URL: https://jira.jboss.org/jira/browse/JBAS-5908 Project: JBoss Application Server Issue Type: Task Security Level: Public(Everyone can see) Components: Transaction Manager (JBossTM) Affects Versions: JBossAS-5.0.0.CR1, JBossAS-4.2.3.GA Reporter: Adrian Brock Assignee: Galder Zamarreno Fix For: JBossAS-5.0.1.CR1, JBossAS-4.2.4.GA The ClientUserTransactionObjectFactory is inefficient. 1) It is doing initialisation based on a static cached instance Since nothing holds a hard reference to this class, it can be garbage collected meaning the initialisation can be done multiple times. 2) The determination and resolving of the ServerVMClientUserTransaction does the lookup for the transaction twice. Once when initialising the singleton and again to see whether it should use the singleton. Both issues could be resolved by simplifying ClientUserTransactionObjectFactory.getUserTransaction() to be something (which removes the need for the cached object) static private UserTransaction getUserTransaction() { ServerVMClientUserTransaction serverUserTransaction = ServerVMClientUserTransaction.getSingleton(); if (serverUserTranasction.isServer()) return serverUserTransaction; else return ClientUserTransaction.getSingleton(); } This would require a new method on ServerVMClientUserTransaction to detect whether it can be used, i.e. it can locate a local transaction manager. public boolean isServer() { return tm != null; }