Title: Great concepts, Worthless index, Questionable technology
Product review: The authors do a fine job explaining the concepts behind object relational mapping in general and Hibernate in particular. Too bad the book is absolutely crippled by its index. For instance, there is no entry for "discriminator" (or anything close to that), so to go back to that section where I positively recall reading about this term, I have to browse the whole book. Ridiculous. Furthermore, the following statement by the authors themselves throws this entire technology into question: "Retrieving persistent objects from the database is one of the most interesting (and complex) parts of working with Hibernate." If this is so complex, than the Java community has been sold a bill of goods, and its no wonder the exodus to Ruby is gaining momentum.
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