package com.jaeson.springstudy.dao.impl;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate4.HibernateCallback;
import org.springframework.orm.hibernate4.HibernateTemplate;
import org.springframework.stereotype.Repository;
import com.jaeson.hibernatestudy.bean.Student;
import com.jaeson.springstudy.dao.StudentDao;
@Repository("hibernateTemplateStudentDao")
public class HibernateTemplateStudentDaoImpl implements StudentDao {
private HibernateTemplate hibernateTemplate;
@Autowired
public void setSessionFactory(SessionFactory sessionFactory) {
this.hibernateTemplate = new HibernateTemplate(sessionFactory);
}
@Override
public Student findById(String id) {
return this.hibernateTemplate.load(Student.class, id);
}
@Override
public List<Student> findByQueryString(final String queryString, final Object... params) {
return this.hibernateTemplate.execute(new HibernateCallback<List<Student>>() {
@SuppressWarnings("unchecked")
@Override
public List<Student> doInHibernate(Session session) {
Query query = session.createQuery(queryString);
for (int i = 0; params != null && i < params.length; i++) {
query.setParameter(i, params[i]);
}
return query.list();
}
});
}
@Override
public void update(Student entity) {
this.hibernateTemplate.update(entity);
}
@Override
public String save(Student entity) {
return (String) this.hibernateTemplate.save(entity);
}
@Override
public void saveOrUpdate(Student entity) {
this.hibernateTemplate.saveOrUpdate(entity);
}
@Override
public void delete(Student entity) {
this.hibernateTemplate.delete(entity);
}
@Override
public void deleteById(String id) {
this.delete(this.findById(id));
}
@Override
public void studentMethod() {
throw new UnsupportedOperationException("studentMethod unsupported");
}
@Override
public List<Student> findByClassid(String id) {
return this.findByQueryString("from Student s where s.clazz.id=?", new Object[]{id});
}
}
package com.jaeson.springstudy.dao.impl;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Restrictions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate4.SessionFactoryUtils;
import org.springframework.orm.hibernate4.support.HibernateDaoSupport;
import org.springframework.stereotype.Repository;
import com.jaeson.hibernatestudy.bean.Student;
import com.jaeson.springstudy.dao.StudentDao;
@Repository("hibernateDaoSupportStudentDao")
public class HibernateDaoSupportStudentDaoImpl extends HibernateDaoSupport
implements StudentDao {
@Autowired
public void setMySessionFactory(SessionFactory sessionFactory) {
super.setSessionFactory(sessionFactory);
}
@Override
public Student findById(String id) {
return this.getHibernateTemplate().load(Student.class, id);
}
@SuppressWarnings("unchecked")
@Override
public List<Student> findByQueryString(String queryString, Object... params) {
Session session = this.currentSession();
try {
Query query = session.createQuery(queryString);
for (int i = 0; params != null && i < params.length; i++) {
query.setParameter(i, params[i]);
}
return query.list();
} catch (HibernateException ex) {
throw SessionFactoryUtils.convertHibernateAccessException(ex);
}
}
@Override
public void update(Student entity) {
this.getHibernateTemplate().update(entity);
}
@Override
public String save(Student entity) {
return (String) this.getHibernateTemplate().save(entity);
}
@Override
public void saveOrUpdate(Student entity) {
this.getHibernateTemplate().saveOrUpdate(entity);
}
@Override
public void delete(Student entity) {
this.getHibernateTemplate().delete(entity);
}
@Override
public void deleteById(String id) {
this.delete(this.findById(id));
}
@Override
public void studentMethod() {
throw new UnsupportedOperationException("studentMethod unsupported");
}
@SuppressWarnings("unchecked")
@Override
public List<Student> findByClassid(String id) {
Criteria criteria = this.currentSession().createCriteria(Student.class);
criteria.add(Restrictions.eq("clazz.id", id));
return criteria.list();
}
}