public class EMFProviderLMT implements EMFProviderInterface
EntityManagerFactory is created in static initialization block and used to create EntityManager objects.| Modifier and Type | Field and Description |
|---|---|
protected javax.persistence.EntityManagerFactory | emf Holds EntityManagerFactory. |
ENTITY_MANAGER, ENTITY_MANAGER_FACTORY, JPA_ENTITY_MANAGER, JPA_ENTITY_MANAGER_FACTORY, JPA_PERSISTENCE_UNIT_NAME, JPA_TRANSACTION, PERSISTENCE_UNIT_NAME, TRANSACTION| Constructor and Description |
|---|
EMFProviderLMT() Creates new EMF provider. |
EMFProviderLMT(java.util.Properties config) Creates new EMF provider. |
EMFProviderLMT(java.lang.String persistenceUnitName) Creates new EMF provider with specified persistence unit name. |
| Modifier and Type | Method and Description |
|---|---|
void | commitTransaction(java.lang.Object tx) Commits specified transaction. |
javax.persistence.EntityManagerFactory | get() Returns EntityManagerFactory. |
javax.persistence.EntityManager | getEntityManager() Returns EntityManager created using factory. |
java.lang.Object | getTransaction(javax.persistence.EntityManager em) Returns started transaction. Creates transaction with em.getTransaction () and starts it. |
void | returnEntityManager(javax.persistence.EntityManager em) Closes EntityManager. |
void | rollbackTransaction(java.lang.Object tx) Rolls back specified transaction. |
public EMFProviderLMT()
public EMFProviderLMT(java.util.Properties config)
config - Properties for provider configuration.public EMFProviderLMT(java.lang.String persistenceUnitName)
persistenceUnitName - String name of persistence unit.public javax.persistence.EntityManagerFactory get()
EntityManagerFactory.get in interface EMFProviderInterfaceEntityManagerFactory for locally managed transactions.public javax.persistence.EntityManager getEntityManager()
throws javax.persistence.PersistenceException EntityManager created using factory.getEntityManager in interface EMFProviderInterfaceEntityManager for persistence operations.javax.persistence.PersistenceException - if unable to acquire EntityManager.public void returnEntityManager(javax.persistence.EntityManager em)
EntityManager.returnEntityManager in interface EMFProviderInterfaceem - EntityManager which should be closed.public java.lang.Object getTransaction(javax.persistence.EntityManager em)
throws java.lang.Exception em.getTransaction () and starts it.getTransaction in interface EMFProviderInterfaceem - EntityManager needed if joining to existing transaction or starting transaction locally.Object Already started transaction for persistence operations.javax.persistence.PersistenceException - if unable to acquire or open transaction.java.lang.Exception - if unable to acquire or open transaction.public void commitTransaction(java.lang.Object tx)
throws java.lang.Exception tx.commit ().commitTransaction in interface EMFProviderInterfacetx - Object transaction to be commited.java.lang.Exception - occured while committing transaction.public void rollbackTransaction(java.lang.Object tx)
tx.rollback ().rollbackTransaction in interface EMFProviderInterfacetx - Object transaction to be rolled back.