Scala for Java Developers. Build reactive, scalable applications and integrate Java code with the power of Scala Thomas Alexandre

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Spis treści książki

• Scala for Java Developers
  • Table of Contents
  • Scala for Java Developers
  • Credits
  • Foreword
  • About the Author
  • Acknowledgments
  • About the Reviewers
  • www.PacktPub.com
    • Support files, eBooks, discount offers, and more
      • Why Subscribe?
      • Free Access for Packt account holders
  • Preface
    • What this book covers
    • What you need for this book
    • Who this book is for
    • Conventions
    • Reader feedback
    • Customer support
      • Downloading the example code
      • Errata
      • Piracy
      • Questions
  • 1. Programming Interactively within Your Project
    • Advantages of using Scala for Java projects
      • More concise and expressive
      • Increased productivity
      • Natural evolution from Java
      • Better fit for asynchronous and concurrent code
    • Learning Scala through the REPL
      • Declaring val/var variables
      • Defining classes
      • Explaining case classes
    • Operations on collections
      • Transforming collections containing primitive types
      • Collections of more complex objects
        • Filter and partition
        • Dealing with tuples
        • Introducing Map
        • Introducing the Option construct
        • A glimpse at pattern matching
        • The map method
        • Looking at String Interpolation
        • The groupBy method
        • The foldLeft method
    • Summary
  • 2. Code Integration
    • Creating a REST API from an existing database
      • The sample database
      • Setting up a Maven project
      • Creating JPA entities and REST web services
      • Running and testing the project
        • Adding a unit test in Java
    • Adding a test in Scala
    • Setting up Scala within a Java Maven project
    • Scala and Java collaboration
      • Converting between collection types
      • JavaBean-style properties
      • Scala and Java object orientation
      • Scala traits as enhanced Java interfaces
      • Declaring objects
      • Introducing companion objects
      • Handling exceptions
    • Differences in style between Java and Scala code
      • Adjusting the code layout
      • Naming conventions
    • Summary
  • 3. Understanding the Scala Ecosystem
    • Inheriting Java Integrated Development Environments (IDEs)
    • Building with Simple Build Tool (SBT)
      • Getting started with SBT
        • Creating a sample project
        • Importing the project in Eclipse, IntelliJ IDEA, and NetBeans
        • Creating a web application that runs on a servlet container
      • Using sbt-assembly to build a single .jar archive
      • Formatting code with Scalariform
    • Experimenting with Scala Worksheets
    • Working with HTTP
      • Scalas for comprehension
    • Taking advantage of Typesafe Activator
      • Creating an application based on activator templates
    • The REPL as a scripting engine
    • Summary
  • 4. Testing Tools
    • Writing tests with ScalaTest
      • BDD-style testing
      • Functional testing
      • Mocking with ScalaMock
    • Testing with ScalaCheck
    • Summary
  • 5. Getting Started with the Play Framework
    • Getting started with the classic Play distribution
    • Getting started with the Typesafe Activator
    • Architecture of a Play application
      • Visualizing the framework stack
      • Exploring the request-response lifecycle
      • Handling a request in the controller
      • Rendering the view
    • Playing with authentication
    • Practical tips when using Play
      • Debugging with Play
      • Dealing with version control
    • Summary
  • 6. Database Access and the Future of ORM
    • Integrating an existing ORM Hibernate and JPA
      • Making JPA available in Scala
    • Dealing with persistence in the Play Framework
      • A simple example using Anorm
    • Replacing ORM
    • Learning about Slick
    • Scaffolding a Play application
      • Importing test data
      • Visualizing the database in the H2browser
      • Exploring the code behind the app generation
      • Limitations of the playcrud utility
    • Summary
  • 7. Working with Integration and Web Services
    • Binding XML data in Scala
      • Running scalaxb from a SOAP web service
    • Working with XML and JSON
      • Manipulating XML
      • Manipulating JSON
      • Using Play JSON
    • Handling Play requests with XML and JSON
      • Mocking Play responses with JSON
      • Calling web services from Play
    • Summary
  • 8. Essential Properties of Modern Applications Asynchrony and Concurrency
    • The pillars of Concurrency
    • The Async library SIP-22-Async
      • Combining web services
      • Combining services without await
    • Getting started with Akka
      • Understanding the Actor model
      • Switching behavior
      • Supervising actors to handle failure
      • Testing actor systems
      • Exploring further with Akka
    • Summary
  • 9. Building Reactive Web Applications
    • Describing reactive applications
    • Handling streams reactively
      • Understanding Iteratees in Play
      • Adapting Enumerator with Enumeratee
    • Experimenting with WebSockets and Iteratees in Play
    • Learning from activator templates
      • Reactive stocks
      • Reactive real-time search
      • The Play-Akka-Angular-WebSocket template
    • Playing with Actor Room
    • Summary
  • 10. Scala Goodies
    • Exploring MongoDB
      • Entering Casbah
      • Applying MapReduce transformations
    • Scratching the surface of Big Data
    • Introducing DSLs in Scala
      • Observing internal DSLs
      • Tackling external DSLs through parser combinators
    • Introducing Scala.js
    • Final tips
      • Copying and pasting in the REPL
      • Timing code execution in the REPL
    • Summary
  • Index

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