Spring Framework Declarative Transaction with Annotations

• Using Spring 2.0 and Java 5, it is possible to declare the transactions using annotation-based approach.
• Spring framework supports @Transactional annotation for declarative transaction handling, this annotation can be used on a concrete class or method (with public visibility) of a concrete class. This annotation can be used on an interface, but this will only work as you would expect it to if you are using interface-based proxies.
• The default @Transactional settings are:
  • The propagation setting is PROPAGATION_REQUIRED
  • The isolation level is ISOLATION_DEFAULT
  • The transaction is read/write
  • The transaction timeout defaults to the default timeout of the underlying transaction system, or none if timeouts are not supported
  • Any RuntimeException will trigger rollback, and any checked Exception will not.
• Enabling the configuration of transactional behavior based on annotations can be done as follows

<tx:annotation-driven transaction-manager=”txManager”/> where txManager points the underlying transaction manager and the tx namespace refers to http://www.springframework.org/schema/tx

• Transaction rollback can be controlled though Transactional annotation for the property ‘rollbackFor’ and ‘rollbackForClassName’.
• Timeout for the transaction can be controlled through the Transactional annotation for the property ‘timeout’.
• Example usage for Declarative transaction with Annotations

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Written by Ravi Nallakukkala on April 10th, 2007 with no comments.
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