DOT NET Interview Questions - DotNetSpider

(A)What is aspect oriented programming?
Note :- This is something which is catching up the market so interviewer can ask you to see
how you are in touch with the market.So probably this explanation can be quiet long but
bear with me it is worth of it
I will try to be as short as possible as this book is not a reference book. Just to save you
from interviewer I will give a short description of aspect oriented programming in .NET.
First let's try to define it which can probably save you during interview
Aspect-oriented software development is a new technology for separation of concerns (SOC)
in software development. The techniques of AOSD make it possible to modularize
crosscutting aspects of a system.
Ok that statement’s can save you for the first stage let’s get down actually what is it. Let’s
revisit back how software development cycle evolved.
When we look back at times of Cobol where we used to break the modules in small
functionalities and use reusability to its maximum.
Then came the time when we talked in terms of Objects where things where clearer as
software was modeled in terms of real life examples. It worked fine and till today is the
most accepted way of implementing and organizing project. So why AOP ?
Aspect oriented programming does not oppose OOP’s but rather supports it and make’s
it more maintainable. So remove the logic from head the AOP is replacement of OOP.
No its brother of OOP helping him to be better.
When we talk in terms of object’s it’s an entity which maps to real world domain. Object
has attributes which represent the state of object and also define its behavior. By rule of
object oriented programming object should be stand alone and communicate with other
object’s using messages or defined interface.
One object should not communicate with other object directly rather communicate through
defined interfaces. Every object satisfies some “Concern” in relation to the system.
Twist: - What is Concern in AOP?
“A concern is a particular goal, concept, or area of interest”
There are mainly two types of concern from an object perspective:-
√
Core / Main concerns which it should satisfy and is his work.
I hope in my second edition i will come out with a seperate chapter on AOP
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