JBoss.orgCommunity Documentation
JBossCache class is registered as an eXo container component in the configuration.xml file.
<component> <key>org.jboss.cache.transaction.TransactionManagerLookup</key> <type>org.jboss.cache.transaction.JBossStandaloneJTAManagerLookup</type> </component>
JBossStandaloneJTAManagerLookup is used in a standalone environment, but GenericTransactionManagerLookup is used in the Application Server environment.