hibernatedao.java

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package com.util;
import java.io.Serializable;
import java.util.List;

import org.hibernate.Session;



public interface HibernateDao {
	
	public void save(Object po) throws Exception ;
	
	public List query(String hql)throws Exception ;
	
	public Object get(Class clas ,Serializable id)throws Exception;
	
	public void update(Object po) throws Exception ;
	
	public void delete(Object po) throws Exception ;
	
	public void executeSql(String sql)throws Exception ;
	
	/**
	 * 直接执行一个统计的Sql，返回统计数量（第一个字段）
	 * @param sql
	 * @return
	 * @throws Exception
	 */
	public int getCountByExecuteSql(String sql)throws Exception ;
	public List getTopN(String hql,int n)throws Exception ;
	
	public List getListByExecuteSql(String sq,String columnNamel)throws Exception;
	
	public List getListByExecuteSql(String sq, int fetchNubmer)throws Exception;
	
	public Session openSession()throws Exception;
	
	public void closeSession()throws Exception;
}