DAO和数据传输对象

本文介绍了DAO和数据传输对象的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

因此，在数据传输对象"中，应仅包含setter和getter.但是，如何处理还从数据传输对象中插入和删除对象呢?

So in the Data transfer Object there should be only setters and getters.. However what about handling also inserting and deleting objects from the Data transfer Object?

public class dto{ setters and getters... .. .. public void delete(){ CustomreDao.delete(this.ID); } }

会违背DAO模式本身吗?

Would it be against the DAO pattern itself?

谢谢.

推荐答案

问一下自己:更新DAO的delete方法有多困难?"如果您有很多DTO，并且突然需要更改DAO，那么您要做的就是很多工作.

Ask yourself this: "how hard would it be to update the DAO's delete method?" If you have a lot of DTOs and suddenly need to change the DAO, then that's a lot of work you just created for yourself.

将DTO连接到DAO的责任留在其他地方，您可以在此从单个点控制交互.

Leave the responsibility of connecting the DTO to the DAO to something else, where you could control the interaction from a single point.