public List findAll(Integer start, Integer limit) {
	log.debug("finding all SipNews instances");
	try {
		String queryString = "from SipNews";
		Query query = this.getSession().createQuery(queryString);
		query.setFirstResult(start);
		query.setMaxResults(limit);
		return query.list();
	} catch (RuntimeException re) {
		log.error("find all failed", re);
		throw re;
	}
}

package cn.ineeke.hibernate.dao;
import java.io.Serializable;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
/**
* 进一步封装HibernateSessionFacotry，减少代码书写量，提高效率。
*/
public abstract class BaseHibernateDAO {
private Session session = null;
public Session getSession() {
this.session = HibernateSessionFactory.getSession();
return session;
}
public void setSession(Session session) {
this.session = session;
}
public void closeSession(){
this.session = null;
HibernateSessionFactory.closeSession();
}
public Object get(Class clz,Serializable id){
Object obj = null;
Session session = this.getSession();
try {
obj = session.get(clz, id);
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return obj;
}
public void save(Object item){
Session session = this.getSession();
Transaction ts = null;
try {
ts = session.beginTransaction();
session.save(item);
ts.commit();
} catch (HibernateException e) {
// TODO Auto-generated catch block
if(ts != null){
ts.rollback();
}
e.printStackTrace();
} finally{
this.closeSession();
}
}
public void update(Object item){
Session session = this.getSession();
Transaction ts = null;
try {
ts = session.beginTransaction();
session.clear();
session.update(item);
ts.commit();
} catch (HibernateException e) {
// TODO Auto-generated catch block
if(ts != null){
ts.rollback();
}
e.printStackTrace();
} finally{
this.closeSession();
}
}
public void delete(Class clz,Serializable id){
Session session = this.getSession();
Transaction ts = null;
try {
ts = session.beginTransaction();
session.delete(this.get(clz, id));
ts.commit();
} catch (HibernateException e) {
// TODO Auto-generated catch block
if(ts != null){
ts.rollback();
}
e.printStackTrace();
} finally{
this.closeSession();
}
}
}

public void delete(Class clz,Serializable id){
Session session = this.getSession();
Transaction ts = null;
try {
ts = session.beginTransaction();
session.delete(this.get(clz, id));
ts.commit();
} catch (HibernateException e) {
// TODO Auto-generated catch block
if(ts != null){
ts.rollback();
}
e.printStackTrace();
} finally{
this.closeSession();
}
}