| Class | Description | 
                            | CustomizableRollbackTransactionAttribute | Extended version of org.springframework.transaction.interceptor.RuleBasedTransactionAttribute that ensures all exception types are rolled back and allows inheritance of setRollbackOnly | 
                            | DatastoreTransactionManager | A org.springframework.transaction.PlatformTransactionManager instance that
 works with the Spring datastore abstraction | 
                            | SessionHolder | Holds a reference to one or more sessions. | 
                            | SessionOnlyTransaction |  | 
                            | TransactionObject | A transaction object returned when the transaction is created. | 
                            | TransactionUtils | Utility methods for Transactions. |