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作者 Re:DAO设计,测试的问题 [Re:gaoxt1983]

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于 2008-04-19 09:30 user profilesend a private message to usersearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
depends on your service.

For login service, my experience is yes, you need that, Smile, if you have tens of ways to verify them, user/password, nt login, digital certs, finger prints, face recognition, etc...

I have a dao interface so that users can specify in the runtime to output the result to console, database, file, special cache, or downstream targets.

Most important thing is that you have to think hard about the interface, the data you send across this interface. Using a Map on the interface is almost for sure is a bad idea because it makes the interface almost invisible at all.

For example,
User load(int userId);

or load(User user);

which one is better?

insertUser(int userId, String password, String name);



which one is better?

int getUserId();

should this be on the interface?

How about this:


and how about

load(User[] users)

"Any fool can write code that a computer can understand. Good programmers write code that humans can understand."
- Martin Fowler, Refactoring - Improving the Design of Existing Code

人气 标题 作者 字数 发贴时间
16577 DAO设计,测试的问题 gaoxt1983 1078 2006-11-24 08:52
14216 Re:DAO设计,测试的问题 zhangzhaofeng 12 2007-01-26 15:33
10471 Re:DAO设计,测试的问题 Jacob53 105 2008-02-12 18:00
10574 Re:DAO设计,测试的问题 floater 922 2008-04-19 09:30

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