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lxz(flyer)

this is the elevator control system for 15 floor building with 4 elevators. it runs just like normal elevators system in our real world. My system should provide an outside panel for user to require the UP/DOWN at any floor and also an inside panel to allow user in the elevators to select which floor he head to. The system should move UP/DOWN and STOP at any floor according to boht outside and inside requests. If without response for a outside request within 3 minutes there would be an alarm . Also an administrator paned is needed to control the whole system to stop and restart. My system also need to simulate the movement of the 4 elevators. Is that clear ?

(#375968@0)
Last Updated: 2002-2-21
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工作学习 / IT技术讨论 / 请问各位大虾:我在用JAVA编一个电梯控制系统,以CLASS1负责各个电梯的运行,以CLASS2控制中心调度,可如何让CLASS2随时知道各个电梯的运行状态(FLOOR,DIRECTION,MOVE OR STOP)呢?多谢! -lxz(flyer); 2002-2-21 (#375656@0)

在用那本how to program Java书？：-） -luoboyang(萝卜秧); 2002-2-21 (#375659@0)

不是啦,我在做一个COURSE PROJECT,这本书很好吗? -lxz(flyer); 2002-2-21 (#375719@0)

you must have "FLOOR ,DIRECTION, status" attribute in your elevator class, then getXXX();in my opinion, class2 needn't know these information, just tell class1 to do what. class1 determine it. -macsym(日进斗斤); 2002-2-21 (#375668@0)

问题是,如果有人在电梯外某楼按了向上或下的按钮,CLASS2不是要根据各个电梯的运行来决定把这一个REQUEST传给某一个电梯去处理吗? -lxz(flyer); 2002-2-21 (#375722@0)

if class2 can directely control the elevator, why you need the class1? -macsym(日进斗斤); 2002-2-21 (#375734@0)
In opinion, class2 just forward the request and get result. class1 to prosess the request. -macsym(日进斗斤); 2002-2-21 (#375737@0)

Thank you,macsym,i understand CLASS1 just forword the REQUEST to CLASS1 to let CLASS1 to process, but what you mean "get result" here? -lxz(flyer); 2002-2-21 (#375754@0)

like "success, fail, true , false". just like you bushed the button, the light turn on. -macsym(日进斗斤); 2002-2-21 (#375762@0)

还有,如果让几部电梯同时运行,互不相干,是不是可以在CLASS1里用几个THREADS来实现,每个THREAD控制一个电梯的MOVEMENT,或是有别的好方法?多谢! -lxz(flyer); 2002-2-21 (#375741@0)

yeah, class1 must be muliti-thread -macsym(日进斗斤); 2002-2-21 (#375747@0)

you are so warm-hearted,macsym.another question: do you think three classes is enough for this system(CLASS1, CLASS2 plus another class for adminstrator)? -lxz(flyer); 2002-2-21 (#375774@0)

plus elevator class -macsym(日进斗斤); 2002-2-21 (#375777@0)

but i think CLASS2 is controller and CLASS1 is elevator, or maybe i should be a scheduler? the "elevator class" you mentioned here should include what kind of attributes and methods? -lxz(flyer); 2002-2-21 (#375786@0)

my picture: elevator class, administrator class(muliti-thread), client class(to response and forward request). -macsym(日进斗斤); 2002-2-21 (#375796@0)

forgot it, it's wrong. let me think it -macsym(日进斗斤); 2002-2-21 (#375801@0)

there are two kinds of request, one is outside elevators, the other is inside each elevator, should i combine these two requests inot one class? look forword to your reply. -lxz(flyer); 2002-2-21 (#375811@0)

no, that's diffirent . -macsym(日进斗斤); 2002-2-21 (#375818@0)

so maybe i can use the controller class i mentioned above to respond the outside requests and add a elevator class you mentioned before to deal with inside requests and forowrd them to scheduler class? -lxz(flyer); 2002-2-21 (#375826@0)

you are right! -macsym(日进斗斤); 2002-2-21 (#375813@0)

? i am confused. at what point i am right? -lxz(flyer); 2002-2-21 (#375821@0)

I need more detail about it, do you have a description about it? -macsym(日进斗斤); 2002-2-21 (#375853@0)

here is the description: -lxz(flyer); 2002-2-21 {669} (#375968@0)
this is the elevator control system for 15 floor building with 4 elevators. it runs just like normal elevators system in our real world. My system should provide an outside panel for user to require the UP/DOWN at any floor and also an inside panel to allow user in the elevators to select which floor he head to. The system should move UP/DOWN and STOP at any floor according to boht outside and inside requests. If without response for a outside request within 3 minutes there would be an alarm . Also an administrator paned is needed to control the whole system to stop and restart. My system also need to simulate the movement of the 4 elevators. Is that clear ?

hi, macsym. busy or just mad at my stupid question? anyway, thank for your help and would appreciate your further reply. -lxz(flyer); 2002-2-21 (#375887@0)

CLASS2 is controller and CLASS1 is elevator, -macsym(日进斗斤); 2002-2-21 (#375862@0)

hi, macsym, where are you, away. offline, busy, or just mad at my stupid question? anyway, thank fou your help and also wait for your futher reply. -lxz(flyer); 2002-2-21 (#375881@0)

CLASS2 is controller and CLASS1 is elevator(maybe thread or threadGroup) -macsym(日进斗斤); 2002-2-21 (#375901@0)

"maybe thread or threadGroup"? so you mean i even don't need thread? and also, only these 2 class is enough? -lxz(flyer); 2002-2-21 (#375974@0)

I think you can get some idea from MVC pattern. -redriver(redriver); 2002-2-21 {214} (#375920@0)
Class1 is represent the state of elevator and implement obserable interface. Class2 is a Viewer and Controller responsible for display and control elevator implement observor interface. so the system is more clear.

do i have to learn MVC pattern? to design the whole system, write related documents(such as SDD) for submmission, and learn java already almost exaust me. -lxz(flyer); 2002-2-21 (#375989@0)

@Las Vegas

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