About EntityManager

111-120 of 200Refresh
JPA Doc
4

createEntityManager()

Method javax.persistence.EntityManagerFactory EntityManager createEntityManager() Create a new application-managed EntityManager. This method returns a new EntityManager instance each time it is invoked. The isOpen method will return true on the returned instance. Returns: entity manager instance
JPA Doc
4

createEntityManager(map)

Method javax.persistence.EntityManagerFactory EntityManager createEntityManager(   Map map ) Create a new application-managed EntityManager with the specified Map of properties. This method returns a new EntityManager instance each time it is invoked. The isOpen method will return true
JPA Doc
4

javax.persistence.NamedQuery

EntityManager em; ... customers = em.createNamedQuery("findAllCustomersWithName ... with the EntityManager methods that create query objects. (Required) The name used to refer to the query with the EntityManager methods that create query objects. Since: JPA 1.0 String query (Required) The query
Forum
3

Merge with Parent/Child entities not possible

javax.persistence.Entity; import javax.persistence.EntityManager; import javax.persistence ... id) {    this.id = id;   } } private EntityManager createEntityManager(String dbFileName ... ("objectdb:" + dbFileName);   EntityManager entityManager = emf.createEntityManager
Forum
3

Updating Entities

"); public static EntityManager employeeDB = emf.createEntityManager(); public static EntityManager ... EntityManagers were not communicating their changes to each other. Which is where my question comes in ... within their respective EntityManager i.e. EmployeeOverview deals with employeeDB - PaygradeOverview deals
Forum
3

Internal exception when updating date filed (TemporalType.DATE)

;         private EntityManager entityManager;         public DataManager(String connectionString ... );             entityManager = entityManagerFactory.createEntityManager();         }         public void ... :" + newBirthday.toString());             try {                 entityManager.getTransaction().begin
Forum
3

@OneToMany(fetch = FetchType.LAZY) list is always null

") private EntityManager entityManager; @EJB private Manager manager; private ... = entityManager.createQuery("SELECT p FROM Parent p"); parents = query.getResultList ... (unitName = "my-pu") private EntityManager entityManager; public void persist(Object o
Forum
3

Performance in large transactions

++) { EntityManager entityManager = getEntityManagerFactory().createEntityManager(); entityManager.setFlushMode(FlushModeType.AUTO); EntityTransaction transaction = entityManager.getTransaction ... = create10000Entites(); entityManager.merge(entities); x.end += 1; transaction.commit
Forum
3

Memory Leaks after COMMIT operation (checked on versions 2.6.5 & 2.6.6.b01)

_EntityManager = m_EntityMgrFactory.createEntityManager(); m_EntityManager.setFlushMode( FlushModeType.COMMIT ); if ( m_EntityManager.isOpen() ) { m_EntityManager.getTransaction().begin(); for ( Pa3DataKey dataKey : aDataKeys ) { m_EntityManager.persist( dataKey
JPA Doc
3

javax.persistence.EntityExistsException

: Serializable Thrown by the persistence provider when EntityManager.persist(Object) is called ... See Also: javax.persistence.EntityManager.persist(Object) EntityExistsException() Constructs a new