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ORM Frameworks

Anil Vupputuri
Ranch Hand

Joined: Oct 31, 2000
Posts: 527
Hi,

Does your book mention any pitfalls or antipatterns related ORM frameworks such as Hibernate.

Thanks.


SCJP 1.5, SCEA, ICED (287,484,486)
Bill Karwin
author
Ranch Hand

Joined: Aug 02, 2010
Posts: 32
Hi Anil, your question is related to the question Wouter asked earlier.
http://www.coderanch.com/t/508679/JDBC/java/ORM-Antipatterns

I have a chapter describing how some ORM users confuse "model" with "table," and this confusion impacts their application design. Martin Fowler calls this the Anemic Domain Model: http://martinfowler.com/bliki/AnemicDomainModel.html

The confusion between model and table is pretty common in the Ruby, PHP, Python, and Perl developer communities, but I haven't found this to be as much of a problem in the Java community.

My advise is to decouple the model from the database access object. Treat them as two separate objects.


Bill Karwin is the author of SQL Antipatterns: Avoiding the Pitfalls of Database Programming
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: ORM Frameworks