Examples of javax.persistence.EntityManagerFactory

javax.persistence.EntityManagerFactory
Interface used to interact with the entity manager factory for the persistence unit.
When the application has finished using the entity manager factory, and/or at application shutdown, the application should close the entity manager factory. Once an EntityManagerFactory has been closed, all its entity managers are considered to be in the closed state. @since Java Persistence 1.0

        unitInfo.setTransactionType(transactionType);


        unitInfo.getManagedClassNames().add("org.apache.openejb.core.cmp.jpa.Employee");


        PersistenceProvider persistenceProvider = (PersistenceProvider) getClass().getClassLoader().loadClass(PERSISTENCE_PROVIDER).newInstance();
        EntityManagerFactory emf = persistenceProvider.createContainerEntityManagerFactory(unitInfo, new HashMap());


        return emf;
    }

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                    }
                    Class clazz = classLoader.loadClass(unit.provider);
                    PersistenceProvider persistenceProvider = (PersistenceProvider) clazz.newInstance();


                    // Create entity manager factory
                    EntityManagerFactory emf = persistenceProvider.createContainerEntityManagerFactory(info, new HashMap());
                    debug("success: " + provider);
                } catch (Throwable e) {
                    debug("failed: " + provider, e);
                }
            }

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            // JPA - Persistence Units MUST be processed first since they will add ClassFileTransformers
            // to the class loader which must be added before any classes are loaded
            PersistenceBuilder persistenceBuilder = new PersistenceBuilder(persistenceClassLoaderHandler);
            for (PersistenceUnitInfo info : appInfo.persistenceUnits) {
                try {
                    EntityManagerFactory factory = persistenceBuilder.createEntityManagerFactory(info, classLoader);
                    containerSystem.getJNDIContext().bind(PERSISTENCE_UNIT_NAMING_CONTEXT + info.id, factory);
                } catch (NameAlreadyBoundException e) {
                    throw new OpenEJBException("PersistenceUnit already deployed: " + info.persistenceUnitRootUrl);
                } catch (Exception e) {
                    throw new OpenEJBException(e);

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        if (ref.location != null) {
            resource.setProperty(JNDI_NAME, ref.location.jndiName);
            resource.setProperty(JNDI_PROVIDER_ID, ref.location.jndiProviderId);
        } else {
            Context context = SystemInstance.get().getComponent(ContainerSystem.class).getJNDIContext();
            EntityManagerFactory factory;
            try {
                factory = (EntityManagerFactory) context.lookup("openejb/PersistenceUnit/" + ref.unitId);
            } catch (NamingException e) {
                throw new IllegalStateException("PersistenceUnit '" + ref.unitId + "' not found for EXTENDED ref '" + ref.referenceName + "'");
            }

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            resource.setProperty(JNDI_NAME, ref.location.jndiName);
            resource.setProperty(JNDI_PROVIDER_ID, ref.location.jndiProviderId);
        } else {
            // TODO: This will not work if webapps don't use AutoConfi
            Context context = SystemInstance.get().getComponent(ContainerSystem.class).getJNDIContext();
            EntityManagerFactory factory;
            try {
                factory = (EntityManagerFactory) context.lookup("openejb/PersistenceUnit/" + ref.unitId);
            } catch (NamingException e) {
                throw new IllegalStateException("PersistenceUnit '" + ref.unitId + "' not found for EXTENDED ref '" + ref.referenceName + "'");
            }

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                bindings.put(normalize(contextInfo.referenceName), reference);
                continue;
            }


            Context context = SystemInstance.get().getComponent(ContainerSystem.class).getJNDIContext();
            EntityManagerFactory factory;
            try {
                factory = (EntityManagerFactory) context.lookup("openejb/PersistenceUnit/" + contextInfo.unitId);
            } catch (NamingException e) {
                throw new OpenEJBException("PersistenceUnit '" + contextInfo.unitId + "' not found for EXTENDED ref '" + contextInfo.referenceName + "'");
            }

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        this.processorName = processorName;
        this.transactionTemplate = transactionTemplate;
    }


    public static JpaMessageIdRepository jpaMessageIdRepository(String persistenceUnit, String processorName) {
        EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory(persistenceUnit);
        return jpaMessageIdRepository(new JpaTemplate(entityManagerFactory), processorName);
    }

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    protected EntityManager createEntityManager() {
        return getEntityManagerFactory().createEntityManager();
    }


    protected TransactionStrategy createTransactionStrategy() {
        EntityManagerFactory emf = getEntityManagerFactory();
        return JpaTemplateTransactionStrategy.newInstance(emf, getTemplate());
        // return new DefaultTransactionStrategy(emf);
    }

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    private void metaDataInheritanceComparatorHelper(boolean base) {
        InheritanceComparator comp = new MetaDataInheritanceComparator();
        if (base)
            comp.setBase(AbstractThing.class);


        EntityManagerFactory emf = createEMF(A.class, B.class, C.class,
            AbstractThing.class);


        ClassMetaData a = JPAFacadeHelper.getMetaData(emf, A.class);
        ClassMetaData b = JPAFacadeHelper.getMetaData(emf, B.class);
        ClassMetaData c = JPAFacadeHelper.getMetaData(emf, C.class);
        ClassMetaData at = JPAFacadeHelper.getMetaData(emf,
            AbstractThing.class);


        emf.close();


        assertEquals(-1, comp.compare(a, b));
        assertEquals(-1, comp.compare(b, c));
        assertTrue(comp.compare(a, c) < 0);

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        assertEquals(-1, comp.compare(at, c));
    }


    public void testEndToEnd() {
        // make sure we can get things fully instantiated
        EntityManagerFactory emf = createEMF(A.class, B.class, C.class,
            AbstractThing.class);
        emf.createEntityManager().close();
        emf.close();
    }

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