Preface

Table of Contents

Conventions Used in this Book
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This document describes how to use the Direct Persistence Layer (DPL) to store and retrieve Java object data. The DPL is introduced in this document in a tutorial-style fashion. This document describes the DPL concepts and the scenarios under which you would use it.

This book is aimed at the software engineer responsible for writing an application in which the ability to persist object data is a desired feature.

Note

The DPL is currently in beta.

Conventions Used in this Book

The following typographical conventions are used within in this manual:

Class names are represented in monospaced font, as are method names. For example: "The Environment() constructor returns an Environment class object."

Variable or non-literal text is presented in italics. For example: "Go to your JE_HOME directory."

Program examples are displayed in a monospaced font on a shaded background. For example:

In some situations, programming examples are updated from one chapter to the next. When this occurs, the new code is presented in monospaced bold font. For example:

Note

Finally, notes of special interest are represented using a note block such as this.

For More Information

Beyond this manual, you may also find the following sources of information useful when building a transactional JE application: