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Manual
70

Storing JPA Entity Objects

.getTransaction().commit(); The Employee instance is constructed as an ordinary Java object and its initial ... is committed. An IllegalArgumentException is thrown by persist if the argument is not an instance ... managed by the EntityManager) or by commit. Referenced Embedded Objects The following code stores
Manual
65

Updating JPA Entity Objects

.getTransaction().begin(); employee.setNickname("Joe the Plumber"); em.getTransaction().commit(); The entity object is physically updated in the database when the transaction is committed. If the transaction is rolled back and not committed the update is discarded. On commit the persist operation
JPA Doc
61

commit()

Method javax.persistence.EntityTransaction void commit() Commit the current resource transaction, writing any unflushed changes to the database. Throws: IllegalStateException - if isActive() is false RollbackException - if the commit fails Since: JPA 1.0
JDO Doc
60

commit()

Method javax.jdo.Transaction void commit() Commit the current transaction. Throws: JDOUserException - if transactions are managed by a container in the managed environment, or if the transaction is not active. Since: JDO 1.0
JDO Doc
60

Constants.PMF_ATTRIBUTE_DETACH_ALL_ON_COMMIT

Static Field javax.jdo.Constants String PMF_ATTRIBUTE_DETACH_ALL_ON_COMMIT The name of the persistence manager factory element's "detach-all-on-commit" attribute. Since: JDO 2.1
JDO Doc
60

Constants.PROPERTY_TRANSACTION_ISOLATION_LEVEL_READ_COMMITTED

Static Field javax.jdo.Constants String PROPERTY_TRANSACTION_ISOLATION_LEVEL_READ_COMMITTED "javax.jdo.option.TransactionIsolationLevel.read-committed" Since: JDO 2.2 See Also: PersistenceManagerFactory.supportedOptions()
JDO Doc
60

Constants.TX_READ_COMMITTED

Static Field javax.jdo.Constants String TX_READ_COMMITTED Transaction isolation level representing the requirement to read committed data only. Since: JDO 2.2 See Also: PersistenceManagerFactory.getTransactionIsolationLevel() Transaction.getIsolationLevel()
JPA Doc
60

FlushModeType.COMMIT

Enum Constant javax.persistence.FlushModeType COMMIT Flushing to occur at transaction commit. The provider may flush at other times, but is not required to. Since: JPA 1.0
Manual
59

Database Connection using JPA

that modify the database should come here. em.getTransaction().commit(); } finally ... (); } A transaction is started by a call to begin and ended by a call to either commit or rollback. All the operations ... with a commit propagates all the modifications physically to the database. If for any reason a commit
JDO Doc
59

Constants.PROPERTY_DETACH_ALL_ON_COMMIT

Static Field javax.jdo.Constants String PROPERTY_DETACH_ALL_ON_COMMIT "javax.jdo.option.DetachAllOnCommit" Since: JDO 2.1 See Also: PersistenceManagerFactory.getDetachAllOnCommit()