hibernate 非xml实体类配置方法！

package com.bird.channel;

import java.util.Date;
import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;

import com.bird.entity.JcChannel;
import com.bird.entity.JcChannelExt;
import com.bird.entity.JcChnlGroupContri;
import com.bird.entity.JcSiteFlow;
import com.bird.util.HibernateSessionFactory;

public class TestUtil {
//查询的例子
public List<JcChannel> getChannelList() {
Session session = HibernateSessionFactory.getSession();
String hql = "from JcChannel where  parent_id is not null ";
Query query = session.createQuery(hql);
List<JcChannel> jchList = (List<JcChannel>) query.list();
for (int i = 0; i < jchList.size(); i++) {
JcChannel jcEn = jchList.get(i);
System.out.println(jcEn.getChannel_id());
}
return jchList;
}
//查询最大id的例子
public int getChannelMaxIdByHql() {
int id = 0;
Session session = HibernateSessionFactory.getSession();
String hql = "select max(channel_id) from JcChannel";
Query query = session.createQuery(hql);
List jchList = query.list();
if (jchList.size() > 0) {
id = Integer.parseInt(jchList.get(0).toString());
}
return id;
}
//查询最大id的例子
public int getChannelMaxIdBySql() {
int id = 0;
Session session = HibernateSessionFactory.getSession();
String hql = "select max(channel_id) from jc_channel ";
Query query = session.createSQLQuery(hql);
List jchList = query.list();
if (jchList.size() > 0) {
id = Integer.parseInt(jchList.get(0).toString());
}
return id;
}
// 修改的例子
public int updateChannelMaxId() {
Session session = HibernateSessionFactory.getSession();
String hql = "update jc_channel  t set t.rgt = 2  ";
Query query = session.createSQLQuery(hql);
int over = query.executeUpdate();
session.beginTransaction().commit();
return over;
}
// 删除的例子
public int deleteChannelMaxId(int id) {
Session session = HibernateSessionFactory.getSession();
String hql = "delete from  jc_channel  where channel_id = ?  ";
Query query = session.createSQLQuery(hql).setParameter(0, id);
int over = query.executeUpdate();
session.beginTransaction().commit();
return over;
}

}