June 2010
Intermediate to advanced
328 pages
7h 51m
English
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Legitimate Uses of the Antipattern
You should avoid the Polymorphic Associations antipattern—use constraints like foreign keys to ensure referential integrity. Polymorphic Associations often relies too much on application code instead of metadata.
You may find that this antipattern is unavoidable if you use an object-relational programming framework such as Hibernate. Such a framework may mitigate the risks introduced by Polymorphic Associations by encapsulating application logic to maintain referential integrity.
If you choose a mature and reputable framework, then you have some confidence that its designers have written the code to implement the association without error. However, if you are implementing Polymorphic Associations from scratch ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.