| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.deltaspike.jpa.impl.entitymanager; |
| |
| import javax.enterprise.context.Dependent; |
| import javax.enterprise.inject.Produces; |
| import javax.enterprise.inject.spi.InjectionPoint; |
| import javax.inject.Inject; |
| import javax.persistence.EntityManagerFactory; |
| import javax.persistence.Persistence; |
| import java.util.Properties; |
| import java.util.logging.Logger; |
| |
| import org.apache.deltaspike.jpa.spi.entitymanager.PersistenceConfigurationProvider; |
| import org.apache.deltaspike.jpa.api.entitymanager.PersistenceUnitName; |
| |
| |
| /** |
| * <p>Built in support for injecting EntityManagerFactories into own beans. |
| * The injection point must use the Qualifier {@link PersistenceUnitName} |
| * to express the desired persistence unit name.</p> |
| * |
| * <p>The EntityManagerFactory for the given persistence unit will be produced |
| * as @Dependent scoped. It can be used to easily implement own |
| * EntityManagerProviders as shown in the following example which provides |
| * a producer according to the entitymanager-per-request design pattern:</p> |
| * <pre> |
| * @ApplicationScoped |
| * public class SampleEntityManagerProducer { |
| * @Inject |
| * @PersistenceUnitName("testPersistenceUnit") |
| * private EntityManagerFactory emf; |
| * |
| * @Produces |
| * @RequestScoped |
| * public EntityManager createEntityManager() { |
| * return emf.createEntityManager(); |
| * } |
| * |
| * public void closeEm(@Disposes EntityManager em) { |
| * em.close(); |
| * } |
| * } |
| * </pre> |
| */ |
| public class EntityManagerFactoryProducer |
| { |
| private static final Logger LOG = Logger.getLogger(EntityManagerFactoryProducer.class.getName()); |
| |
| |
| @Inject |
| private PersistenceConfigurationProvider persistenceConfigurationProvider; |
| |
| |
| @Produces |
| @Dependent |
| @PersistenceUnitName("any") // the value is nonbinding, thus 'any' is just a dummy parameter here |
| public EntityManagerFactory createEntityManagerFactoryForUnit(InjectionPoint injectionPoint) |
| { |
| PersistenceUnitName unitNameAnnotation = injectionPoint.getAnnotated().getAnnotation(PersistenceUnitName.class); |
| |
| if (unitNameAnnotation == null) |
| { |
| LOG.warning("@PersistenceUnitName annotation could not be found at EntityManagerFactory injection point!"); |
| |
| return null; |
| } |
| |
| String unitName = unitNameAnnotation.value(); |
| |
| Properties properties = persistenceConfigurationProvider.getEntityManagerFactoryConfiguration(unitName); |
| |
| EntityManagerFactory emf = Persistence.createEntityManagerFactory(unitName, properties); |
| |
| return emf; |
| } |
| } |