| /* |
| * 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 WARRANTIESOR 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.aries.jpa.container.impl; |
| |
| import static org.osgi.service.jpa.EntityManagerFactoryBuilder.JPA_UNIT_NAME; |
| import static org.osgi.service.jpa.EntityManagerFactoryBuilder.JPA_UNIT_PROVIDER; |
| import static org.osgi.service.jpa.EntityManagerFactoryBuilder.JPA_UNIT_VERSION; |
| |
| import java.io.Closeable; |
| import java.util.Dictionary; |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.Hashtable; |
| import java.util.Map; |
| |
| import javax.persistence.EntityManagerFactory; |
| import javax.persistence.spi.PersistenceProvider; |
| import javax.persistence.spi.PersistenceUnitInfo; |
| import javax.persistence.spi.PersistenceUnitTransactionType; |
| |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.Constants; |
| import org.osgi.framework.ServiceRegistration; |
| import org.osgi.service.cm.ConfigurationException; |
| import org.osgi.service.cm.ManagedService; |
| import org.osgi.service.jpa.EntityManagerFactoryBuilder; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Creates an EntityManagerFactory(EMF) for a persistence unit and publishes it as a service. |
| * Custom properties can be configured by supplying a config admin configuriation named like |
| * the JPA_CONFIGURATION_PREFIX.<persistence unit name>. |
| */ |
| public class ManagedEMF implements Closeable, ManagedService { |
| private static final Logger LOGGER = LoggerFactory.getLogger(ManagedEMF.class); |
| |
| private static String JPA_CONFIGURATION_PREFIX = "org.apache.aries.jpa."; |
| |
| private EntityManagerFactory emf; |
| private ServiceRegistration<EntityManagerFactory> reg; |
| private ServiceRegistration<EntityManagerFactoryBuilder> regBuilder; |
| private PersistenceProvider provider; |
| private PersistenceUnitInfo persistenceUnit; |
| private Bundle bundle; |
| |
| public ManagedEMF(BundleContext containerContext, Bundle bundle, PersistenceProvider provider, PersistenceUnitInfo persistenceUnit) { |
| this.provider = provider; |
| this.persistenceUnit = persistenceUnit; |
| this.bundle = bundle; |
| |
| Dictionary<String, Object> configuration = new Hashtable<String, Object>(); |
| configuration.put(Constants.SERVICE_PID, |
| JPA_CONFIGURATION_PREFIX + persistenceUnit.getPersistenceUnitName()); |
| containerContext.registerService(ManagedService.class.getName(), this, configuration); |
| } |
| |
| public void close() { |
| try { |
| reg.unregister(); |
| } catch (Exception e) { |
| // Ignore. May happen if persistence unit bundle is unloaded/updated |
| } |
| try { |
| regBuilder.unregister(); |
| } catch (Exception e) { |
| // Ignore. May happen if persistence unit bundle is unloaded/updated |
| } |
| if (emf != null && emf.isOpen()) { |
| try { |
| emf.close(); |
| } catch (Exception e) { |
| LOGGER.warn("Error closing EntityManagerFactory for " + persistenceUnit.getPersistenceUnitName(), e); |
| } |
| } |
| reg = null; |
| emf = null; |
| } |
| |
| @Override |
| public void updated(Dictionary<String, ?> properties) throws ConfigurationException { |
| if (emf != null) { |
| close(); |
| } |
| Map<String, Object> overrides = (properties != null) ? asMap(properties) : null; |
| LOGGER.info("Registering EntityManagerFactory for persistence unit " + persistenceUnit.getPersistenceUnitName()); |
| if (LOGGER.isDebugEnabled()) { |
| LOGGER.debug("Using properties override " + overrides); |
| } |
| emf = provider.createContainerEntityManagerFactory(persistenceUnit, overrides); |
| Dictionary<String, String> props = createProperties(persistenceUnit, bundle); |
| BundleContext uctx = bundle.getBundleContext(); |
| reg = uctx.registerService(EntityManagerFactory.class, emf, props); |
| } |
| |
| public static Dictionary<String, String> createProperties(PersistenceUnitInfo persistenceUnit, Bundle puBundle) { |
| Dictionary<String, String> props = new Hashtable<>(); |
| props.put(JPA_UNIT_NAME, persistenceUnit.getPersistenceUnitName()); |
| if (persistenceUnit.getPersistenceProviderClassName() != null) { |
| props.put(JPA_UNIT_PROVIDER, persistenceUnit.getPersistenceProviderClassName()); |
| } |
| props.put(JPA_UNIT_VERSION, puBundle.getVersion().toString()); |
| return props; |
| } |
| |
| private Map<String, Object> asMap(Dictionary<String, ?> dict) { |
| Map<String, Object> map = new HashMap<String, Object>(); |
| map.put(PersistenceUnitTransactionType.class.getName(), persistenceUnit.getTransactionType()); |
| for (Enumeration<String> e = dict.keys(); e.hasMoreElements();) { |
| String key = e.nextElement(); |
| map.put(key, dict.get(key)); |
| } |
| return map; |
| } |
| |
| } |