package qi.yun.dong.dao;

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

public interface IMyBaseDao<E> {

	/**
	 * 根据id查询实体
	 *@param id
	 *@return
	 *@autor:dongyunqi
	 *@createDate:2014-10-15下午2:54:03
	 */
	public E findById(Serializable id);
	
	/**
	 * 查询所有实体
	 *@return
	 *@autor:dongyunqi
	 *@createDate:2014-10-15下午2:54:58
	 */
	public List<E> findAll();
	
	/**
	 * 根据hql查询数据的总计路数
	 *@param whereHql
	 *@return
	 *@autor:dongyunqi
	 *@createDate:2014-10-15下午2:56:20
	 */
	public Integer findCount(final String whereHql);
	
	/**
	 * 查询当前页的信息
	 *@param whereHql
	 *@param from 数据查询起始位置
	 *@param size 查询的数据量
	 *@return
	 *@autor:dongyunqi
	 *@createDate:2014-10-15下午2:57:51
	 */
	public List<E> findByPage(final String whereHql, final int from, final int size);
	
	/**
	 * 更新或添加实体
	 *@param instance
	 *@autor:dongyunqi
	 *@createDate:2014-10-15下午2:59:37
	 */
	public void saveOrUpdate(E instance);
	
	/**
	 * 删除实体
	 *@param instace
	 *@autor:dongyunqi
	 *@createDate:2014-10-15下午3:00:43
	 */
	public void delete(E instace);
}