One key abstraction
From CSSEMediaWiki
(Difference between revisions)
m (Reverted edits by Ebybymic (Talk); changed back to last version by MartinvanZijl) |
|||
Line 1: | Line 1: | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
:''A class should capture one and only one key abstraction.'' --Riel's Heuristic 2.8, [[Arthur Riel 1996]] | :''A class should capture one and only one key abstraction.'' --Riel's Heuristic 2.8, [[Arthur Riel 1996]] | ||
Latest revision as of 03:11, 25 November 2010
- A class should capture one and only one key abstraction. --Riel's Heuristic 2.8, Arthur Riel 1996
A class should represent one key abstraction of the domain model, no more and no less. A key abstraction is generally a noun in a requirements statement. If a key abstraction maps to more than one class, the designer may be representing each function of the abstraction as a class. If several key abstractions map to one class, the designer may be creating a centralized system and needs to split the class into several smaller classes.