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refresh(entity) - JPA EntityManager's method

Method
javax.persistence.EntityManager
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 invoked on a container-managed entity manager of type PersistenceContextType.TRANSACTION and there is no transaction
EntityNotFoundException - if the entity no longer exists in the database
Since:
JPA 1.0
< EntityManager^ EntityManagerEntityTransaction >
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