The main advantage of this TransactionManagerLookup is that it avoids double configuration of JTA specifics. A single TransactionManager bean can be used for both JtaTransactionManager and LocalSessionFactoryBean, with no JTA setup in Hibernate configuration.
Alternatively, use Hibernate's own TransactionManagerLookup implementations: Spring's JtaTransactionManager only requires a TransactionManager for suspending and resuming transactions, so you might not need to apply such special Spring configuration at all. @author Juergen Hoeller @since 1.2 @see LocalSessionFactoryBean#setJtaTransactionManager @see org.springframework.transaction.jta.JtaTransactionManager#setTransactionManager
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