Examples of javax.persistence.EntityManager.persist()

javax.persistence.EntityManager.persist()
Make an entity instance managed and persistent. @param entity @throws EntityExistsException if the entity already exists.(The EntityExistsException may be thrown when the persist operation is invoked, or the EntityExistsException or another PersistenceException may be thrown at commit time.) @throws IllegalStateException if this EntityManager has been closed. @throws IllegalArgumentException if not an entity @throws TransactionRequiredException if invoked on acontainer-managed entity manager of type PersistenceContextType.TRANSACTION and there is no transaction.

            // get entity manager
            EntityManager entityManager = defaultLocator.locate();


            // It's managed by JACORB
            // Hence we don't deal with the TX here            
            entityManager.persist(event);


        } catch (Exception e) {
            log.error("Error persisting event", e);
        }

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        EntityManager em = emf.createEntityManager();
        em.getTransaction().begin();
        for ( Task task : tasks ) {
            // for this one we put the task in directly;
            em.persist( task );
        }
        em.getTransaction().commit();


        // now create a new service, to see if it initiates from the DB correctly
        MockEscalatedDeadlineHandler handler = new MockEscalatedDeadlineHandler();

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        MyVariableSerializable myVariableSerializable = new MyVariableSerializable("This is a test SerializableObject");
        EntityManager em = emf.createEntityManager();
        UserTransaction utx = (UserTransaction) new InitialContext().lookup( "java:comp/UserTransaction" );
        utx.begin();
        em.joinTransaction();
        em.persist(myEntity);
        em.persist(myEntityMethods);
        em.persist(myEntityOnlyFields);
        utx.commit();
        em.close();
        Environment env =  createEnvironment();

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        EntityManager em = emf.createEntityManager();
        UserTransaction utx = (UserTransaction) new InitialContext().lookup( "java:comp/UserTransaction" );
        utx.begin();
        em.joinTransaction();
        em.persist(myEntity);
        em.persist(myEntityMethods);
        em.persist(myEntityOnlyFields);
        utx.commit();
        em.close();
        Environment env =  createEnvironment();
        KnowledgeBase kbase = createKnowledgeBase( "VariablePersistenceStrategyProcess.rf" );

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        UserTransaction utx = (UserTransaction) new InitialContext().lookup( "java:comp/UserTransaction" );
        utx.begin();
        em.joinTransaction();
        em.persist(myEntity);
        em.persist(myEntityMethods);
        em.persist(myEntityOnlyFields);
        utx.commit();
        em.close();
        Environment env =  createEnvironment();
        KnowledgeBase kbase = createKnowledgeBase( "VariablePersistenceStrategyProcess.rf" );
        StatefulKnowledgeSession ksession = createSession( kbase, env );

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        MyVariableSerializable myVariableSerializable = new MyVariableSerializable("This is a test SerializableObject");
        EntityManager em = emf.createEntityManager();
        UserTransaction utx = (UserTransaction) new InitialContext().lookup( "java:comp/UserTransaction" );
        utx.begin();
        em.joinTransaction();
        em.persist(myEntity);
        em.persist(myEntityMethods);
        em.persist(myEntityOnlyFields);
        utx.commit();
        em.close();
        Environment env = createEnvironment();

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        EntityManager em = emf.createEntityManager();
        UserTransaction utx = (UserTransaction) new InitialContext().lookup( "java:comp/UserTransaction" );
        utx.begin();
        em.joinTransaction();
        em.persist(myEntity);
        em.persist(myEntityMethods);
        em.persist(myEntityOnlyFields);
        utx.commit();
        em.close();
        Environment env = createEnvironment();
        KnowledgeBase kbase = createKnowledgeBase( "VariablePersistenceStrategyProcessTypeChange.rf" );

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        UserTransaction utx = (UserTransaction) new InitialContext().lookup( "java:comp/UserTransaction" );
        utx.begin();
        em.joinTransaction();
        em.persist(myEntity);
        em.persist(myEntityMethods);
        em.persist(myEntityOnlyFields);
        utx.commit();
        em.close();
        Environment env = createEnvironment();
        KnowledgeBase kbase = createKnowledgeBase( "VariablePersistenceStrategyProcessTypeChange.rf" );
        StatefulKnowledgeSession ksession = createSession( kbase, env );

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        MyVariableSerializable myVariableSerializable = new MyVariableSerializable("This is a test SerializableObject");
        EntityManager em = emf.createEntityManager();
        UserTransaction utx = (UserTransaction) new InitialContext().lookup( "java:comp/UserTransaction" );
        utx.begin();
        em.joinTransaction();
        em.persist(myEntity);
        em.persist(myEntityMethods);
        em.persist(myEntityOnlyFields);
        utx.commit();
        em.close();
        Environment env = createEnvironment();

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        EntityManager em = emf.createEntityManager();
        UserTransaction utx = (UserTransaction) new InitialContext().lookup( "java:comp/UserTransaction" );
        utx.begin();
        em.joinTransaction();
        em.persist(myEntity);
        em.persist(myEntityMethods);
        em.persist(myEntityOnlyFields);
        utx.commit();
        em.close();
        Environment env = createEnvironment();
        KnowledgeBase kbase = createKnowledgeBase( "VariablePersistenceStrategySubProcess.rf" );

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