/*
* Demoiselle Framework
* Copyright (C) 2010 SERPRO
* ----------------------------------------------------------------------------
* This file is part of Demoiselle Framework.
*
* Demoiselle Framework is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License version 3
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License version 3
* along with this program; if not, see <http://www.gnu.org/licenses/>
* or write to the Free Software Foundation, Inc., 51 Franklin Street,
* Fifth Floor, Boston, MA 02110-1301, USA.
* ----------------------------------------------------------------------------
* Este arquivo é parte do Framework Demoiselle.
*
* O Framework Demoiselle é um software livre; você pode redistribuí-lo e/ou
* modificá-lo dentro dos termos da GNU LGPL versão 3 como publicada pela Fundação
* do Software Livre (FSF).
*
* Este programa é distribuído na esperança que possa ser útil, mas SEM NENHUMA
* GARANTIA; sem uma garantia implícita de ADEQUAÇÃO a qualquer MERCADO ou
* APLICAÇÃO EM PARTICULAR. Veja a Licença Pública Geral GNU/LGPL em português
* para maiores detalhes.
*
* Você deve ter recebido uma cópia da GNU LGPL versão 3, sob o título
* "LICENCA.txt", junto com esse programa. Se não, acesse <http://www.gnu.org/licenses/>
* ou escreva para a Fundação do Software Livre (FSF) Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02111-1301, USA.
*/
package br.gov.frameworkdemoiselle.internal.producer;
import java.io.Serializable;
import java.util.Map;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Default;
import javax.enterprise.inject.Instance;
import javax.enterprise.inject.Produces;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.inject.Inject;
import javax.persistence.EntityManager;
import br.gov.frameworkdemoiselle.annotation.Name;
import br.gov.frameworkdemoiselle.internal.configuration.EntityManagerConfig;
import br.gov.frameworkdemoiselle.internal.proxy.EntityManagerProxy;
/**
* <p>
* Factory class responsible to produces instances of EntityManager. Produces instances based on informations defined in
* persistence.xml, demoiselle.properties or @PersistenceUnit annotation.
* </p>
*/
@ApplicationScoped
public class EntityManagerProducer implements Serializable {
private static final long serialVersionUID = 1L;
@Inject
private Instance<EntityManagerStore> storeInstance;
@Inject
private EntityManagerConfig configuration;
@Inject
private Persistences persistenceUnitReader;
/**
* <p>
* Default EntityManager factory. Tries two strategies to produces EntityManager instances.
* <li>The first one is based on informations available on demoiselle properties file
* ("frameworkdemoiselle.persistence.unit.name" key).</li>
* <li>The second one is based on persistence.xml file. If exists only one Persistence Unit defined, this one is
* used.</li>
*
* @param config
* Suplies informations about EntityManager defined in properties file.
* @return Produced EntityManager.
*/
@Default
@Produces
protected EntityManager createDefault(EntityManagerConfig config) {
String persistenceUnit = persistenceUnitReader.getFromProperties(config);
if (persistenceUnit == null) {
persistenceUnit = persistenceUnitReader.getFromXML();
}
return new EntityManagerProxy(persistenceUnit);
}
/**
* <p>
* Factory that reads the {@link AmbiguousQualifier} qualifier and creates an entity manager with a matching
* persistence unit name.
* </p>
*
* @param config
* Suplies informations about EntityManager defined in properties file.
* @return Produced EntityManager.
*/
@Name("")
@Produces
protected EntityManager createNamed(InjectionPoint ip) {
String persistenceUnit = ip.getAnnotated().getAnnotation(Name.class).value();
return new EntityManagerProxy(persistenceUnit);
}
public EntityManager getEntityManager(String persistenceUnit) {
return getStore().getEntityManager(persistenceUnit);
}
public Map<String, EntityManager> getCache() {
return getStore().getCache();
}
private EntityManagerStore getStore() {
switch (configuration.getEntityManagerScope()) {
case REQUEST:
return storeInstance.select(RequestEntityManagerStore.class).get();
case APPLICATION:
return storeInstance.select(ApplicationEntityManagerStore.class).get();
case CONVERSATION:
return storeInstance.select(ConversationEntityManagerStore.class).get();
case NOSCOPE:
return storeInstance.select(DependentEntityManagerStore.class).get();
case SESSION:
return storeInstance.select(SessionEntityManagerStore.class).get();
case VIEW:
return storeInstance.select(ViewEntityManagerStore.class).get();
default:
return storeInstance.select(RequestEntityManagerStore.class).get();
}
}
}