Play Framework Cookbook

Play Framework Cookbook

By : Alexander Reelsen

Buy this Book

Play Framework Cookbook

By: Alexander Reelsen

Buy this Book

Overview of this book

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. The Play Framework Cookbook starts where the beginner documentation ends. It shows you how to utilize advanced features of the Play framework – piece by piece and completely outlined with working applications! 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.

Play Framework Cookbook

Credits

Foreword

About the Author

About the Reviewers

www.PacktPub.com

Preface

Free Chapter

Basics of the Play Framework

Introduction

Downloading and installing the Play framework

Creating a new application

Defining routes as the entry point to your application

Configuring your application via application.conf

Defining your own controllers

Defining your own models

Using fixtures to provide initial data

Defining your own views

Writing your own tags

Using Java Extensions to format data in your views

Adding modules to extend your application

Using Oracle or other databases with Play

Understanding suspendable requests

Understanding session management

Using Controllers

Introduction

URL routing using annotation-based configuration

Basics of caching

Using HTTP digest authentication

Generating PDFs in your controllers

Binding objects using custom binders

Validating objects using annotations

Adding annotation-based right checks to your controller

Rendering JSON output

Writing your own renderRSS method as controller output

Leveraging Modules

Introduction

Dependency injection with Spring

Dependency injection with Guice

Using the security module

Adding security to the CRUD module

Using the MongoDB module

Using MongoDB/GridFS to deliver files

Creating and Using APIs

Introduction

Using Google Chart API as a tag

Including a Twitter search in your application

Managing different output formats

Binding JSON and XML to objects

Introduction to Writing Modules

Introduction

Creating and using your own module

Building a flexible registration module

Understanding events

Managing module dependencies

Using the same model for different applications

Understanding bytecode enhancement

Adding private module repositories

Preprocessing content by integrating stylus

Integrating Dojo by adding command line options

Practical Module Examples

Introduction

Adding annotations via bytecode enhancement

Implementing your own persistence layer

Integrating with messaging queues

Using Solr for indexing

Writing your own cache implementation

Running in Production

Introduction

Test automation with Jenkins

Test automation with Calimoucho

Creating a distributed configuration service

Running jobs in a distributed environment

Running one Play instance for several hosts

Forcing SSL for chosen controllers

Implementing own monitoring points

Configuring log4j for log rotation

Integrating with Icinga

Integrating with Munin

Setting up the Apache web server with Play

Setting up the Nginx web server with Play

Setting up the Lighttpd web server with Play

Multi-node deployment introduction

Further Information About the Play Framework

Further information

Index

Customer Reviews

5 star

4 star

3 star

2 star

1 star

Validating objects using annotations

Basic validation should be clear for you now. It is well-documented in the official documentation and shows you how to use the different annotations such as @Min, @Max, @Url, @Email, @InFuture, @InPast, or @Range. You should go a step forward and add custom validation. An often needed requirement is to create some unique string used as identifier. The standard way to go is to create a UUID and use it. However, validation of the UUID should be pretty automatic and you want to be sure to have a valid UUID in your models.

You can find the source code of this example in the chapter2/annotation-validation directory.

Getting ready

As common practice is to develop your application in a test driven way, we will write an appropriate test as first code in this recipe. In case you need more information about writing and using tests in Play, you should read http://www.playframework.org/documentation/1.2/test.

This is the test that should work:

public class UuidTest extends...

Play Framework Cookbook

By : Alexander Reelsen

Play Framework Cookbook

By: Alexander Reelsen

Overview of this book

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Play Framework Cookbook

Validating objects using annotations

Getting ready