Effective Enterprise Java

You must lay aside all prejudice on both sides, and neither believe nor reject anything, because any other persons, or descriptions of persons, have rejected...

KISS (Keep It Simple, Stupid). Do the Simplest Thing That Could Possibly Work. The Rule of Simplicity. It goes by several names, but they all...

Frequently, business or domain logic reaches degrees of complexity that are difficult, if not outright impossible, to express in imperative languages like Java. Purists will...

As programmers, we are used to a model where operations carried out by the languages we use are implicitly atomic: that is, a function called...

A user is working with an online banking system. She wants to do a simple balance transfer from her savings account to her checking account...

Readers of Effective Java [Bloch] will undoubtedly remember this advice from Item 49: "As a rule, you should do as little work as possible inside...

Readers of Effective Java [Bloch] will undoubtedly remember this item's title as advice from Item 49, phrased in almost exactly the same way. Fortunately, deadlock...

It's one of those aspects of the EJB Specification that many EJB programmers either never think about or, if they do, they sort of shunt...

Creating a transaction against a given resource is typically a technology-specific action—for example, in a relational database, a transaction is created by using the SQL...

Consider the canonical problem of two users trying to work with the same data: each takes out a working copy of the data in the...

Consider once again the problem of two users and one set of data, as introduced in Item 33. Each user reads the set of data,...

Consider for a moment the Isolation property of an ACID transaction. It puts up artificial "walls" between transactions, screening out any changes made to the...

Unfortunately, transaction atomicity isn't always a wonderful thing. In particular, one of the problems that can arise with an atomic transaction is that when something goes...

Imagine, for just a moment, that you are a kindergarten teacher. Twenty kids, all five years old or so, are under your care for what...

After reading through this chapter, you may begin to despair—after all, if Java, transactions, or even the EJB Specification can't keep you from having to...