import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.Expression;
import org.hibernate.criterion.Restrictions;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
<BUG>import org.springframework.context.support.ClassPathXmlApplicationContext;</BUG>
public class DocumentDao {
private static final Logger LOG = LoggerFactory.getLogger(DocumentDao.class);
<BUG>private static HibernateUtil hibernateUtil;</BUG>
public void save(Document document) {

import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.Expression;
import org.hibernate.criterion.Restrictions;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DocumentDao {
private static final Logger LOG = LoggerFactory.getLogger(DocumentDao.class);
public void save(Document document) {
