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Enterprise JavaBeans

List Price: $34.95
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Average Customer Rating: Average rating of 4.5/5Average rating of 4.5/5Average rating of 4.5/5Average rating of 4.5/5Average rating of 4.5/5

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Enterprise JavaBeans

Binding: Paperback
Format: Bargain Price
Publication Date: 1999-05-31
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Spotlight customer reviews:
Customer Rating: Average rating of 4/5Average rating of 4/5Average rating of 4/5Average rating of 4/5Average rating of 4/5
Summary: Everything EJB
Comment: This book covers almost everything related to EJBs in their new reincarnation. Its author have rightfully chosen to scrap any information concerning EJB 2.1. This is the right path to take as the new 3.X standard is so radically different (read much more useful) from the earlier versions.

The book starts out with a fairly detailed introduction to JPA 1.0 persistence mappings, entity relations and inheritance. It then moves on to covering session beans, interceptors, JAX-WS/RPC, the JNDI ENC and JTA.

This is a massive amount of stuff and still the author manages to convey its primary use, pitfalls and corner cases in an engaging technical style. So from a topical point of view you get what you pay for (and then some). The book is however not without some problems. First of all it contains some annoying errors, like:

1) In the interceptor chapter, the author fails to inform you that EJB interceptors are only used on direct invocations. That is if you put a interceptor on EJB A and inject it into EJB B, then delegated method invocations on EJB A from B are not intercepted. This is annoying at best, and at worst it could be considered an enormous flaw in the EJB spec.

2) Some JPA information is just plain wrong (like the use of named parameters in native queries). Most of these errors can be traced back to the fact that the author uses Hibernate which indeed supports this non-standard functionality. While understandable, it does confuse you some when confronted with strange errors in other containers

Many other errors exists and this book badly needs a review from some of the other EJB/JPA spec members, preferably someone not involved with the JBoss container. Another and more grave problem is the fact that the book presents most technologies as separate entities, and thereby you fail to see the complete picture. I really miss a complete real life EJB applications including:

1) Security (propagation of client role to the server (i.e. getCallerPrincipal)).
2) Interceptors (for logging and security).
3) Use of EJBs from a web application.
4) Testing of EJBs (best practices for easy unit testing).
5) Packaging and compiling (these days you cannot write a JEE book without a complete Maven sample)

This might sound like allot of grief, but I still choose to give the book four stars from the simple fact that it is complete, contains allot of useful samples (like the .NET SOAP application client) and manages to make many hard topics easy to understand.

In general a well written and useful book with a heap of information, written in a pragmatic style without to much fluff.

Customer Rating: Average rating of 5/5Average rating of 5/5Average rating of 5/5Average rating of 5/5Average rating of 5/5
Summary: Great EJB3 Book! You will be greatly pleased with your purchase.
Comment: This is a great introduction to EJBs in general, and now EJB3. (the JSR 220 standard) Just like EJBs are now easier to develop with version 3, so is it easy to read and study this book. I hold O'Reilly in a high regard, (doesn't mean I'm a fan boy though, they do have their share of bad apples) and their high standards show in the quality of writing in this book. You will be happy with your purchase.
Customer Rating: Average rating of 2/5Average rating of 2/5Average rating of 2/5Average rating of 2/5Average rating of 2/5
Summary: Good but outdated
Comment: To be brief, this is a great book, but you will almost certainly want the newest edition of it.
Customer Rating: Average rating of 3/5Average rating of 3/5Average rating of 3/5Average rating of 3/5Average rating of 3/5
Summary: Is Good but Quality down in the code
Comment: I recommend this book. The book cover almost topics in EJB 3.0 and you can depend it for preparing the SCBCD 5. The author explain and describe the topics in easy way.

The problem of this book have more error in code I escalation it for author. cause the book have his name not auditor name.

I will give this book three stars for losing the quality.
Customer Rating: Average rating of 5/5Average rating of 5/5Average rating of 5/5Average rating of 5/5Average rating of 5/5
Summary: Excellent book on EJB 3.0 and JPA 1.0, even for a beginner
Comment: I found this book very helpful getting me up to date with the latest version of EJB. I had used EJB 2.1 before, but this book is good even for complete beginners. The first couple hundred pages are about the new Java Persistence Architecture. The last couple hundred pages are on using EJB 3.0 in JBoss AS. The middle of the book covers the rest of EJB 3.0. I still reference this book from time to time when working with JPA and complex relationships. I highly recommend this book.
  
Editorial Reviews:
Enterprise JavaBeans was recently voted "Best Java Book" by the editors and readers of Java Developer's Journal. Readers of JavaPro named it the "Best Java Book for Experts." And Amazon.com included it in the Top Computer Books for 2000. Now the best only gets better! In the new 3rd edition, Enterprise JavaBeans has been completely revised and updated with a thorough introduction to the new 2.0 version of the EJB specification. Significantly different from the earlier version, the 2.0 specification introduces three dramatic improvements: A completely new version of container-managed persistence; local interfaces; and a totally new kind of bean called the "message driven bean."

The new version of container-managed persistence (CMP) beans in 2.0 is more portable and robust than in the older 1.1 version. Most significant is the introduction of the relationship fields, which allow entity beans to declare relationships with each other as natural references. In order to make this huge leap in component relationships possible, EJB 2.0 had to redesign how entity beans are defined and interact. Our new 3rd edition examines this critical CMP model in detail.

Local interfaces are thoroughly discussed as well. Local interfaces allow beans that are co-located to interact without the overhead of remote method calls. This improves the performance of beans considerably and complements the CMP relationship fields.

Message driven beans are a new kind of enterprise bean based on asynchronous messaging and the Java Message service (JMS). Instead of responding to Java RMI calls, message driven beans process JMS messages sent by messaging clients. An entire chapter is devoted to message-driven beans and how to use them effectively.

In addition, the 3rd edition contains an architecture overview, information on resource management and primary services, design strategies, and XML deployment descriptors.
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