Examples of javax.persistence.EntityManager.lock()

javax.persistence.EntityManager.lock()
Set the lock mode for an entity object contained in the persistence context. @param entity @param lockMode @throws IllegalStateException if this EntityManager has been closed @throws PersistenceException if an unsupported lock callis made @throws IllegalArgumentException if the instance is notan entity or is a detached entity @throws TransactionRequiredException if there is notransaction

    em.persist( lock );
    em.getTransaction().commit();


    em.getTransaction().begin();
    lock = em.getReference( Lock.class, lock.getId() );
    em.lock( lock, LockModeType.READ );
    lock.setName( "surname" );
    em.getTransaction().commit();


    em.getTransaction().begin();
    lock = em.find( Lock.class, lock.getId() );

View Full Code Here

    em.getTransaction().commit();


    em.getTransaction().begin();
    lock = em.getReference( Lock.class, lock.getId() );
    Integer version = lock.getVersion();
    em.lock( lock, LockModeType.WRITE );
    em.getTransaction().commit();


    em.getTransaction().begin();
    lock = em.getReference( Lock.class, lock.getId() );
    try {

View Full Code Here

    }
    catch (TransactionRequiredException e) {
      //success
    }
    try {
      em.lock( book, LockModeType.READ );
      fail( "lock has to be inside a Tx" );
    }
    catch (TransactionRequiredException e) {
      //success
    }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.