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  • Book Overview & Buying Play Framework essentials
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Play Framework essentials

Play Framework essentials

By : Julien Richard-Foy
3.6 (8)
Buy this Book
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Play Framework essentials

Play Framework essentials

3.6 (8)
By: Julien Richard-Foy
Buy this Book

Overview of this book

This book targets Java and Scala developers who already have some experience in web development and who want to master Play framework quickly and efficiently. This book assumes you have a good level of knowledge and understanding of efficient Java and Scala code.
Table of Contents (9 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Building a Web Service
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1. Building a Web Service
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Play – a framework used to write web applications
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Bootstrapping a Play application
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URL routing
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Building HTTP responses
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Reading JSON requests
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Summary
2
2. Persisting Data and Testing
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2. Persisting Data and Testing
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Testing your web service
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Persisting data
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Using an in-memory database for tests
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Summary
3
3. Turning a Web Service into a Web Application
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3. Turning a Web Service into a Web Application
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Delta between a web service and a web application
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Using the template engine to build web pages
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Generating HTML forms
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Reading and validating HTML form data
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Handling content negotiation
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Putting things together
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Writing web user interface tests
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Summary
4
4. Integrating with Client-side Technologies
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4. Integrating with Client-side Technologies
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Philosophy of Play regarding client-side technologies
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Serving static assets
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Using the JavaScript reverse router
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Managing assets from the build system
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Summary
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5. Reactively Handling Long-running Requests
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5. Reactively Handling Long-running Requests
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Play application's execution model
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Scaling up your server
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Embracing non-blocking APIs
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Managing execution contexts
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Writing incremental computations using iteratees
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Streaming results using enumerators
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Manipulating data streams by combining iteratees, enumerators, and enumeratees
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Controlling the data flow
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Summary
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6. Leveraging the Play Stack – Security, Internationalization, Cache, and the HTTP Client
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6. Leveraging the Play Stack – Security, Internationalization, Cache, and the HTTP Client
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Handling security concerns
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Saving computation time using cache
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Serving content in several languages
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Calling remote web services
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Summary
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7. Scaling Your Codebase and Deploying Your Application
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7. Scaling Your Codebase and Deploying Your Application
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Making an action's logic reusable and composable with action builders
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Modularizing your code
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Application deployment
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Summary
8
Index
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Index

Testing your web service

The architecture of your web service is depicted in the following diagram:

Testing your web service

This section presents the testing libraries that are integrated with Play and the testing infrastructure provided by Play to test the HTTP layer of your web service.

Writing and running tests

As Play projects are just sbt projects by default, you can add tests to your Play project just as you would do for any other sbt project, except that the root directory for test sources is not src/test/scala/ but simply test/.

sbt provides a mechanism to integrate testing libraries so that their tests can be run from the build system. The testing component of Play integrates two testing libraries out of the box: specs2 for Scala tests and JUnit for Java tests. Play projects automatically depend on the Play testing component, so you don't need to add this dependency in your build.sbt file. Obviously, you are free to use any other testing library supported by sbt—just follow their usage instructions...

CONTINUE READING
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Tech Concepts
36
Programming languages
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