/***
* Copyright (c) 2009 Caelum - www.caelum.com.br/opensource
* All rights reserved.
*
* Licensed 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 br.com.caelum.vraptor.util.hibernate;
import java.net.URL;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.cfg.Configuration;
import br.com.caelum.vraptor.environment.Environment;
import br.com.caelum.vraptor.ioc.ApplicationScoped;
import br.com.caelum.vraptor.ioc.Component;
import br.com.caelum.vraptor.ioc.ComponentFactory;
import br.com.caelum.vraptor.ioc.Container;
/**
* Creates a SessionFactory from default resource /hibernate.cfg.xml, using
* AnnotationConfiguration, and provides it to container.
*
* @author Lucas Cavalcanti
* @author Guilherme Silveira
*/
@Component
@ApplicationScoped
public class SessionFactoryCreator implements ComponentFactory<SessionFactory> {
private SessionFactory factory;
private final Container container;
public SessionFactoryCreator(Container container) {
this.container = container;
}
@PostConstruct
public void create() {
Configuration configuration = new AnnotationConfiguration();
configuration = configuration.configure(getHibernateCfgLocation());
factory = configuration.buildSessionFactory();
}
public SessionFactory getInstance() {
return factory;
}
@PreDestroy
public void destroy() {
factory.close();
}
private URL getHibernateCfgLocation() {
if (isEnvironmentAvailable()) {
Environment env = container.instanceFor(Environment.class);
return env.getResource(getHibernateCfgName());
}
return getClass().getResource(getHibernateCfgName());
}
protected String getHibernateCfgName() {
return "/hibernate.cfg.xml";
}
private boolean isEnvironmentAvailable() {
try {
Class.forName("br.com.caelum.vraptor.environment.Environment");
return true;
} catch (ClassNotFoundException e) {
return false;
}
}
}