Book Image

Gradle Effective Implementations Guide - Second Edition

By : Hubert Klein Ikkink
Book Image

Gradle Effective Implementations Guide - Second Edition

By: Hubert Klein Ikkink

Overview of this book

Gradle is a project automation tool that has a wide range of applications. The basic aim of Gradle is to automate a wide variety of tasks performed by software developers, including compiling computer source code to binary code, packaging binary codes, running tests, deploying applications to production systems, and creating documentation. The book will start with the fundamentals of Gradle and introduce you to the tools that will be used in further chapters. You will learn to create and work with Gradle scripts and then see how to use Gradle to build your Java Projects. While building Java application, you will find out about other important topics such as dependency management, publishing artifacts, and integrating the application with other JVM languages such as Scala and Groovy. By the end of this book, you will be able to use Gradle in your daily development. Writing tasks, applying plugins, and creating build logic will be your second nature.
Table of Contents (18 chapters)
Gradle Effective Implementations Guide - Second Edition
About the Author
About the Reviewer

Adding additional properties to tasks

A task object already has several properties and methods. However, we can add any arbitrary new property to a task and use it. Gradle provides an ext namespace for the task object. We can set new properties and use them again once they are set. We can either set a property directly or use a closure to set a property with a value. In the following sample, we print the value of the message task property. The value of the property is assigned with the simple.ext.message = 'world' statement:

// Create simple task. 
task simple << { 
    println "Hello ${message}" 
// We set the value for 
// the non-existing message 
// property with the task extension 
// support. 
simple.ext.message = 'world' 

When we run the task, we get the following output:

Hello world
Total time: 0.584 secs