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Object-Relational Mapping Pitfalls
Object-relational mapping (ORM) has become an indispensable tool to work with relational databases in Java applications. This topic, along with JPA and Hibernate, has been the subject of innumerable articles. Therefore, the present post will not enumerate again the pros and cons of using these tools but describe a real situation involving the misuse of ORM.
How Good of an Abstraction Is ORM?To some extent, ORM has proved to be a successful tool to hide the complexities of relational databases. Yet an abstraction is as good as its design to abstract implementation details away. When these details leak through the abstraction, there is likely to be problems (see the law of leaky abstractions for more details).
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