1 of 1 people found the following review helpful
Good JDO Overview,
This review is from: Core Java Data Objects (Paperback)
Java Data Objects (JDO) is a persistence framework to save Java objects to a datastore. The example code shows you how to create, read, update, and delete a persistent object using the JDO API. The book goes through the JDP API, especially the five main interfaces needed. The metadata, an xml file, that is needed for JDO is make clear in one chapter and the various options in the JDO xml file are explained to show you how to store your type of objects. The explanation of first-class and second-class object could have been longer. It seems like a more important topic and the brief mention in the book.
Part of the book shows you how to develop applications with JDO and the architecture scenarios where you should or should not use JDO. The third part of the book covers using JDO and J2EE application. The authors argue that JDO in most situations offers a better solution over EJB entity beans to store your objects or to use JDO and some direct JDBC. Practical examples showing how JDO can be applied to existing applications
The authors also have a real world case study that provides best practices and tips for your projects. The only part missing from the book, are using JDO implementations, which makes the examples impossible to test without using an implementation from one on the JDO implementers. I would recommend this book for anyone trying to learn JDO, but more information would be needed to use an actual JDO implementation.