Book Image

Play Framework Cookbook

By : Alexander Reelsen
Book Image

Play Framework Cookbook

By: Alexander Reelsen

Overview of this book

<p>The Play framework is the new kid on the block of Java frameworks. By breaking with existing standards the play framework tries not to abstract away from HTTP as most web frameworks do, but tightly integrates with it. This means quite a shift for Java programmers. Understanding these concepts behind the play framework and its impact on web development with Java are crucial for fast development of applications.<br /><br />The Play Framework Cookbook starts where the beginner documentation ends. It shows you how to utilize advanced features of the Play framework &ndash; piece by piece and completely outlined with working applications!<br /><br />The reader will be taken through all layers of the Play Framework and provided with in-depth knowledge from as many examples and applications as possible. Leveraging the most from the Play framework means to think simple again in a java environment. Implement your own renderers, integrate tightly with HTTP, use existing code, improve site performance with caching and integrate with other web services and interfaces. Learn about non-functional issues like modularity or integration into production and testing environments. In order to provide the best learning experience during reading Play Framework Cookbook, almost every example is provided with source code, so you can start immediately to integrate recipes into your own play applications.</p>
Table of Contents (16 chapters)
Play Framework Cookbook
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Further Information About the Play Framework
Index

Understanding bytecode enhancement


This recipe should show you why it is important to understand the basic concepts of bytecode enhancement and how it is leveraged in the Play framework. The average developer usually does not get in contact with bytecode enhancement. The usual build cycle is compiling the application, and then using the created class files.

Bytecode enhancement is an additional step between the compilation of the class files and the usage by the application. Basically this enhancement step allows you to change the complete behavior of the application by changing what is written in the class files at a very low level. A common use case for this is aspect oriented programming, is where you add certain features to methods after the class has been compiled. A classical use case for this is the measurement of method runtimes.

If you have already explored the source code of the persistence layer you might have noticed the use of bytecode enhancement. This is primarily to overcome...