/jboss-as-7.1.1.Final/jpa/core/src/main/java/org/jboss/as/jpa/service/PersistenceUnitServiceImpl.java

  1/*
  2 * JBoss, Home of Professional Open Source.
  3 * Copyright 2011, Red Hat, Inc., and individual contributors
  4 * as indicated by the @author tags. See the copyright.txt file in the
  5 * distribution for a full listing of individual contributors.
  6 *
  7 * This is free software; you can redistribute it and/or modify it
  8 * under the terms of the GNU Lesser General Public License as
  9 * published by the Free Software Foundation; either version 2.1 of
 10 * the License, or (at your option) any later version.
 11 *
 12 * This software is distributed in the hope that it will be useful,
 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 15 * Lesser General Public License for more details.
 16 *
 17 * You should have received a copy of the GNU Lesser General Public
 18 * License along with this software; if not, write to the Free
 19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 21 */
 22
 23package org.jboss.as.jpa.service;
 24
 25import java.util.Map;
 26
 27import javax.persistence.EntityManagerFactory;
 28import javax.persistence.spi.PersistenceProvider;
 29import javax.sql.DataSource;
 30
 31import org.jboss.as.jpa.classloader.TempClassLoaderFactoryImpl;
 32import org.jboss.as.jpa.spi.PersistenceProviderAdaptor;
 33import org.jboss.as.jpa.spi.PersistenceUnitMetadata;
 34import org.jboss.as.jpa.spi.PersistenceUnitService;
 35import org.jboss.as.jpa.util.JPAServiceNames;
 36import org.jboss.as.naming.WritableServiceBasedNamingStore;
 37import org.jboss.msc.inject.Injector;
 38import org.jboss.msc.service.Service;
 39import org.jboss.msc.service.ServiceName;
 40import org.jboss.msc.service.StartContext;
 41import org.jboss.msc.service.StartException;
 42import org.jboss.msc.service.StopContext;
 43import org.jboss.msc.value.InjectedValue;
 44
 45import static org.jboss.as.jpa.JpaLogger.JPA_LOGGER;
 46
 47/**
 48 * Persistence Unit service that is created for each deployed persistence unit that will be referenced by the
 49 * persistence context/unit injector.
 50 * <p/>
 51 * The persistence unit scoped
 52 *
 53 * @author Scott Marlow
 54 */
 55public class PersistenceUnitServiceImpl implements Service<PersistenceUnitServiceImpl>, PersistenceUnitService {
 56
 57
 58    private final InjectedValue<Map> properties = new InjectedValue<Map>();
 59
 60    private final InjectedValue<DataSource> jtaDataSource = new InjectedValue<DataSource>();
 61    private final InjectedValue<DataSource> nonJtaDataSource = new InjectedValue<DataSource>();
 62
 63    private final PersistenceProviderAdaptor persistenceProviderAdaptor;
 64    private final PersistenceProvider persistenceProvider;
 65    private final PersistenceUnitMetadata pu;
 66    private final ClassLoader classLoader;
 67
 68    private volatile EntityManagerFactory entityManagerFactory;
 69
 70    public PersistenceUnitServiceImpl(final ClassLoader classLoader, final PersistenceUnitMetadata pu, final PersistenceProviderAdaptor persistenceProviderAdaptor, final PersistenceProvider persistenceProvider) {
 71        this.pu = pu;
 72        this.persistenceProviderAdaptor = persistenceProviderAdaptor;
 73        this.persistenceProvider = persistenceProvider;
 74        this.classLoader = classLoader;
 75    }
 76
 77    @Override
 78    public void start(StartContext context) throws StartException {
 79        try {
 80            JPA_LOGGER.startingService("Persistence Unit", pu.getScopedPersistenceUnitName());
 81            pu.setTempClassLoaderFactory(new TempClassLoaderFactoryImpl(classLoader));
 82            pu.setJtaDataSource(jtaDataSource.getOptionalValue());
 83            pu.setNonJtaDataSource(nonJtaDataSource.getOptionalValue());
 84            WritableServiceBasedNamingStore.pushOwner(context.getController().getServiceContainer().subTarget());
 85            this.entityManagerFactory = createContainerEntityManagerFactory();
 86        } finally {
 87            pu.setTempClassLoaderFactory(null);    // release the temp classloader factory (only needed when creating the EMF)
 88            WritableServiceBasedNamingStore.popOwner();
 89        }
 90    }
 91
 92    @Override
 93    public void stop(StopContext context) {
 94        JPA_LOGGER.stoppingService("Persistence Unit", pu.getScopedPersistenceUnitName());
 95        if (entityManagerFactory != null) {
 96            WritableServiceBasedNamingStore.pushOwner(context.getController().getServiceContainer().subTarget());
 97            try {
 98                entityManagerFactory.close();
 99            } finally {
100                entityManagerFactory = null;
101                pu.setTempClassLoaderFactory(null);
102                WritableServiceBasedNamingStore.popOwner();
103            }
104        }
105    }
106
107    @Override
108    public PersistenceUnitServiceImpl getValue() throws IllegalStateException, IllegalArgumentException {
109        return this;
110    }
111
112    /**
113     * Get the entity manager factory
114     *
115     * @return the entity manager factory
116     */
117    @Override
118    public EntityManagerFactory getEntityManagerFactory() {
119        return entityManagerFactory;
120    }
121
122    @Override
123    public String getScopedPersistenceUnitName() {
124        return pu.getScopedPersistenceUnitName();
125    }
126
127    public Injector<Map> getPropertiesInjector() {
128        return properties;
129    }
130
131    public Injector<DataSource> getJtaDataSourceInjector() {
132        return jtaDataSource;
133    }
134
135    public Injector<DataSource> getNonJtaDataSourceInjector() {
136        return nonJtaDataSource;
137    }
138
139    /**
140     * Returns the Persistence Unit service name used for creation or lookup.
141     * The service name contains the unique fully scoped persistence unit name
142     *
143     * @param pu persistence unit definition
144     * @return
145     */
146    public static ServiceName getPUServiceName(PersistenceUnitMetadata pu) {
147        return JPAServiceNames.getPUServiceName(pu.getScopedPersistenceUnitName());
148    }
149
150    public static ServiceName getPUServiceName(String scopedPersistenceUnitName) {
151        return JPAServiceNames.getPUServiceName(scopedPersistenceUnitName);
152    }
153
154    /**
155     * Create EE container entity manager factory
156     *
157     * @return EntityManagerFactory
158     */
159    private EntityManagerFactory createContainerEntityManagerFactory() {
160        persistenceProviderAdaptor.beforeCreateContainerEntityManagerFactory(pu);
161        try {
162            return persistenceProvider.createContainerEntityManagerFactory(pu, properties.getValue());
163        } finally {
164            try {
165                persistenceProviderAdaptor.afterCreateContainerEntityManagerFactory(pu);
166            } finally {
167                pu.setAnnotationIndex(null);    // close reference to Annotation Index (only needed during call to createContainerEntityManagerFactory)
168                //This is needed if the datasource is restarted
169                //pu.setTempClassLoaderFactory(null);    // close reference to temp classloader factory (only needed during call to createEntityManagerFactory)
170            }
171        }
172    }
173}