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How To Use Refactoring To Handle Multiple Versions of Classes
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How To Use Refactoring To Handle Multiple Versions of Classes
http://www.eggheadcafe.com/articles/20031103.asp
Using the Parameterized Factory Pattern, we can create a VersionFactory class that returns back a version specific class based on the version type or id passed into the VersionFactory. Not only can we dynamically return a specific class, we can also move methods back and forth between the version specific classes and the VersionMain class without adjusting anything in our ASP.NET pages or outside classes. This enables us to create a default class to handle all standard versions and custom classes for those versions with special business rules while the UI section of our code is obvilious. We don't have store any information in the database stating whether it is a custom class or not. If the custom class simply exists, it is used. Otherwise, the default class is returned. The following is a graphical representation of our class diagram:
ASP.NET > Tips and Tutorials
Oct 10, 2006
Robbe D. Morris
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