void refresh(
Object entity
)
Refresh the state of the instance from the database, overwriting changes made to the entity, if any.
- Parameters:
entity- entity instance
- Throws:
- IllegalArgumentException - if the instance is not an entity or the entity is not managed
- TransactionRequiredException - if there is no transaction when invoked on a container-managed entity manager of type
PersistenceContextType.TRANSACTION- EntityNotFoundException - if the entity no longer exists in the database
- TransactionRequiredException - if there is no transaction when invoked on a container-managed entity manager of type
- Since:
- JPA 1.0