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New Articles
 o JDBC Performance Series: Retrieving Only Required Data

Book Chapters
 o Decompiling Classes
 o Replacing and Patching Core Java Classes

Book Reviews
 o Weblogic: The Definitive Guide

Patterns
 o Active XML Components
 o Singleton Session Pattern

Key J2EE Industry News Headlines
 Some key headlines:
 o EJB 3.0 Announcement at TheServerSide Symposium
 o TMC Announces Who's Who in Enterprise Java 2004

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JDBC Performance Series: Retrieving Only Required Data

By John Goodson

In this article, Part 2 of the JDBC Peformance Series, John Goodson shows us how to optimize system performance by retrieving data efficiently. He looks at the costs of retrieving long data, how to reduce the size of the data retrieved, choosing the right data types when designing your schema, and gives tips on working with Result Sets.

This newsletter is sponsored in part by Veritas

Need to gain control of your growing J2EE environment? Looking to improve the reliability and performance of your J2EE applications? Download the Emerging J2EE Challenges: Maturing J2EE Applications Support White Paper authored by Corey Ferengul of The META Group and find out why META recommends the emergence of three critical roles that will be vital to maximizing your investment in J2EE applications. Download Now.

Covert Java: Decompiling Classes, Replacing and Patching Core Java Classes

By Alex Kalinovsky

The 'Decompiling Classes' chapter helps you determine when you would need to decompile your Java classes, provides a list of the popular decompilers and shows you how to decompile a class using JAD. It also looks at what makes decompiling possible and examines potential problems with decompiled code. The 'Replacing and Patching Core Java Classes' chapter discusses why you might need to patch the core Java classes, looks at how to patch core Java classes using the boot class path, and shows you a simple patch to java.lang.Integer.

Weblogic: The Definitive Guide

By Vinny Carpenter

Vinny Carpenter reviews O'Reilly's 'WebLogic: The Definitive Guide'. He looks at the various topics covered in the book, including JNDI, JDBC and databases in the context of WebLogic, the Java Transaction API (JTA), Java Connector Architecture (JCA), and Java Messaging Service (JMS). He also reviews the sections on WLS packaging and deployment, installing and creating WebLogic domains, performance, security and more.

Active XML Components

We all use multiple frameworks and APIs and often find complexities of multiple metadata storage and access, as well as constant custom integration of all of such frameworks together. The solution offered proposes a framework supporting a language that would let developers use common reusable techniques to integrate various APIs.

Singleton Session Pattern

This pattern solves the problem of carrying over otherwise globally defined variables in a Singleton pattern-like environment like Struts. This avoids having to define all the variables as local variables and then carrying them over by passing all of those variables to each method (which is very unreadable in the method signature), by creating a Singleton Session class to encapsulate all of the variables.

EJB 3.0 and JDO 2.0: Views from both sides
Gavin King recently wrote an entry discussing EJB 3.0 where he discussed his thoughts on JDO. Abe White of Solarmetric has posted a response to his comments, and has given TSS permission to post them.

TMC Announces Who's Who in Enterprise Java 2004
TMC announced today the Who's Who in Enterprise Java 2004 award winners. Published as a deck of cards, individuals are recognized and honoured under the categories of Contribution (Hearts), Power & Influence (Spades), Entrepreneurship (Diamonds), Pot Pourri (Clubs) and Jokers. A lot of known and unknown deserving people are recognized, including a few surprises.

AndroMDA 3.0M1 milestone release is out
The AndroMDA development team is proud to announce the release 3.0M1 of the code generation framework. It is the first milestone release towards V3.0 and supports really exciting new features. AndroMDA is a code generation framework that follows the Model Driven Architecture (MDA) paradigm. It takes a UML model from a CASE tool and generates classes and deployable components (J2EE or other) specific for your application architecture.

EJB 3.0 Announcement at TheServerSide Symposium
By far the biggest news of TheServerSide Symposium was the EJB 3.0 coming out party. People have been alluding to this for a while, and today we found out, that EJB 3.0 is moving to a lightweight programming model. No more home interfaces, deployment descriptors, SessionBean interfaces. Welcome annotations. There has been a mixed reaction to the news.

JDO 2 Ballot Results: Concerns from IBM, BEA, and Oracle
There has been an interesting twist to the JDO story. IBM, BEA, and Oracle all voted against the new JSR, while Sun and Macromedia supported it in their comments. The battle-ground seems to be that JDO overlaps with "other JSRs". Namely EJB 3.

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