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/**
* Copyright (c) 2009 Red Hat, Inc.
*
* This software is licensed to you under the GNU General Public License,
* version 2 (GPLv2). There is NO WARRANTY for this software, express or
* implied, including the implied warranties of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2
* along with this software; if not, see
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
* Red Hat trademarks are not licensed under GPLv2. No permission is
* granted to use or replicate Red Hat trademarks that are incorporated
* in this software or its documentation.
*/
package org.fedoraproject.candlepin.model;
import java.io.Serializable;
import java.util.List;
import javax.persistence.EntityManager;
import org.hibernate.Session;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.wideplay.warp.persist.Transactional;
public abstract class AbstractHibernateCurator<E extends Persisted> {
@Inject protected Provider<EntityManager> entityManager;
private final Class<E> entityType;
protected AbstractHibernateCurator(Class<E> entityType) {
//entityType = (Class<E>) ((ParameterizedType)
//getClass().getGenericSuperclass()).getActualTypeArguments()[0];
this.entityType = entityType;
}
public E find(Serializable id) {
return id == null ? null : get(entityType, id);
}
@Transactional
public E create(E entity) {
save(entity);
flush();
return entity;
}
@SuppressWarnings("unchecked")
@Transactional()
public List<E> findAll() {
return (List<E>) currentSession().createCriteria(entityType).list();
}
@Transactional
public void delete(E entity) {
E toDelete = find(entity.getId());
currentSession().delete(toDelete);
}
protected final <T> T get(Class<T> clazz, Serializable id) {
return clazz.cast(currentSession().get(clazz, id));
}
protected final void save(Object anObject) {
getEntityManager().persist(anObject);
}
protected final void flush() {
getEntityManager().flush();
}
protected Session currentSession() {
return (Session) entityManager.get().getDelegate();
}
protected EntityManager getEntityManager() {
return entityManager.get();
}
}
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