Employee and EmployeeInfo - C# relationship

Question

I have two classes.

Employee (Model)

EmployeeInfo (Another Class)
//Employee GetEmployeeInfo(int empCode) (MethodName)

EmployeeInfo class returns a Employee type.

Now, what is the relationship between Employee and EmployeeInfo ? (Aggregation, Composition or Association ?)

My guess is that, a new instance of Employee is created within the EmployeeInfo. So, when EmployeeInfo class object dies, so does Employee . This signifies a death relationship. So, the relationship is Composition ?

Sorry if this is a naive question, but cant get it right.

You mean the `EmployeeInfo` class contains an `Employee` type, not returns, right? — Rufus L, Sep 05 '14 at 06:33
@Rufus: No. Actually, `EmployeeInfo` class has a method called `GetEmployee` and it returns `Employee` type. — now he who must not be named., Sep 05 '14 at 06:40

Mick · Accepted Answer · 2014-09-05T08:06:33.237

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If a particular EmployeeInfo is created with and dies with a specific Employee then it's Composition.

If a particular EmployeeInfo can have a specific Employee, but can exist without it then it's Aggregation.

Both Composition and Aggregation are types of Associations, they are just specialized associations.

Yes I would say the relationship you are describing would be composition.

edited Sep 05 '14 at 08:06

answered Sep 05 '14 at 06:39

Mick

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score 0 · Answer 2 · answered Sep 05 '14 at 06:41

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It could be either Composition if EmployeeInfo owns (creates/disposes) the Employee, or Association (if Employee may exist outside EmployeeInfo).

So more information on how you use them (source code) is needed to answer your question.

answered Sep 05 '14 at 06:41

MiN

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score -2 · Answer 3 · answered Sep 05 '14 at 06:38

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Strange, these two classes is designed by you? If not , it's hard to know the relationship between the two.

answered Sep 05 '14 at 06:38

wshcdr

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He's asking for the name of the design pattern. – Cody Gray - on strike Sep 05 '14 at 06:42
Your answer is not an answer... – Rufus L Sep 05 '14 at 06:44

Employee and EmployeeInfo - C# relationship

3 Answers3