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Cohesion and coupling examples

User_19BPUMay 9 2012 — edited May 14 2012
Hi,


Increased cohesion and decreased coupling do lead to good software design.

Decoupling allows you to change the implementation without affecting other parts of your software.
Cohesion ensures that the implementation more specific to functionality and at the same time easier to maintain.
he most effective method of decreasing coupling and increasing cohesion is design by interface.

Example of Cohesion:-

Overloading a method of a class with more functionality will result in low cohesion. Hence to avoid that break the methods in to
small chunks (packets) and perform the operations which will result in better re usability and maintainability of the code.


Example of Coupling:-

Abstraction using a interface to invoke the respective methods in an action class without directly exposing the Implementation class by creating
an instance.

Please correct me if I have gone wrong. If so please do clarify.

Thanks.

Comments

kdario

Hmm, it seems that this forum has some issues(or 'features')

Post above is reply to this thread: Image field cannot refresh when navigate records in jsf page so I don't know how this became totally new thread

Dario

BAO.SZ

Dario,

As you said, this topic is off the original thread (Image field cannot refresh when navigate records in jsf page), but is valuable to me. so I branch it as a new one.

I have two furthur question2:

1.Your suggestion to refresh page data seems a bit complicated, does it the best practice for the job?

--It seems, we also need to use Active Data technology?

2.Can have more evidence or reference docs on this sayings:

"normal way" to refresh page is usually very bad for applications based on JSF/ADF

Thanks.

BAO.SZ

I use the Actions-->branch feature.

But I cannot edit the first branched post, and you become the author of this thread.

Timo Hahn

BAZ, now things get messi

Your intention was good, however branching away the answer isn't something you, we or anybody should do. Now @"kdario" is in the drivers seat for this thread, not you. It's a flaw in the software that you can branch away part of the thread, not your fault.

Anyway I suggest that you open a new thread with your follow up question referring to the original thread. Abandon this one, please. We are happy to answer to the new thread.

Timo

BAO.SZ

Timo and kdario,

I'd glad to open a new thread for the topic. and thank you all very much for your patiences and kindness.

I think the 'Action-->.branch' is an useful feature when some improvement been made, that is:

When make the branching, the operator (which should be the author of the original thread) should be still the 'driver of the new thread',

and can edit the title and post content for the new thread.(but now cannot).

The benefit of above feature is :

1. the new thread usaually will have some relation with the original one, so keep the relation between them will make the contents/threads in this forum more relevent.

A relevant connected network of information will be more useful than a vast volume of unrelated segements of posts.

2.little inputing will be needed by branch if the author can edit the original branch out post.


Timo Hahn

I agree with you, however this is not the right place to discuss this. There is already an enhancement request (idea as it called in the new forum wording) for this at where you can add your comment and vote for the request to get implemented.

Timo

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Locked on Jun 11 2012
Added on May 9 2012
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