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Java Persistence with Hibernate
book

Java Persistence with Hibernate

by Gavin King, Christian Bauer
October 2006
Intermediate to advanced content levelIntermediate to advanced
880 pages
22h 11m
English
Manning Publications
Content preview from Java Persistence with Hibernate

16.2. Creating a persistence layer

Mixing data-access code with application logic violates the emphasis on separation of concerns. There are several reasons why you should consider hiding the Hibernate calls behind a facade, the so-called persistence layer:

  • The persistence layer can provide a higher level of abstraction for data-access operations. Instead of basic CRUD and query operations, you can expose higher-level operations, such as a getMaximumBid() method. This abstraction is the primary reason why you want to create a persistence layer in larger applications: to support reuse of the same non-CRUD operations.

  • The persistence layer can have a generic interface without exposing actual implementation details. In other words, you can hide ...

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