我自己实现了一个数据访问层

				package dark.db.entity;
				
				import java.sql.SQLException;
				
				import dark.db.record.Record;
				
				/**
				 * Title:            
				 * Description:      
				 * Copyright:        Copyright (c) 2003
				 * Company:          DIS
				 * Create Time:      2004-3-21 21:29:48
				 * @author             darkhe
				 * @version            1.0
				 */
				public abstract class AbstractEntityObject implements EntityObject
				{
					/**
					 * @throws SQLException
					 * @see dark.db.entity.EntityObject#add(java.sql.Connection)
					 */
					public void add() throws SQLException
					{
						throw new SQLException("没有实现当前方式");
					}
					
					
					/**
					 * @param conditon
					 * @throws SQLException
					 * @see dark.db.entity.EntityObject#edit(java.lang.String, java.sql.Connection)
					 */
					public void edit(String conditon) throws SQLException
					{
						throw new SQLException("没有实现当前方式");
					}
					
					
					/**
					 * @param condition
					 * @throws SQLException
					 * @see dark.db.entity.EntityObject#del(java.lang.String, java.sql.Connection)
					 */
					public void del(String condition) throws SQLException
					{
						throw new SQLException("没有实现当前方式");
					}
					
					
					/**
					 * @return
					 * @see dark.db.entity.EntityObject#getRecord()
					 */
					public abstract Record getRecord();
				}