Book Image

Gradle Effective Implementation Guide

Book Image

Gradle Effective Implementation Guide

Overview of this book

Gradle is the next generation in build automation. It uses convention-over-configuration to provide good defaults, but is also flexible enough to be usable in every situation you encounter in daily development. Build logic is described with a powerful DSL and empowers developers to create reusable and maintainable build logic."Gradle Effective Implementation Guide" is a great introduction and reference for using Gradle. The Gradle build language is explained with hands on code and practical applications. You learn how to apply Gradle in your Java, Scala or Groovy projects, integrate with your favorite IDE and how to integrate with well-known continuous integration servers.Start with the foundations and work your way through hands on examples to build your knowledge of Gradle to skyscraper heights. You will quickly learn the basics of Gradle, how to write tasks, work with files and how to use write build scripts using the Groovy DSL. Then as you develop you will be shown how to use Gradle for Java projects. Compile, package, test and deploy your applications with ease. When you've mastered the simple, move on to the sublime and integrate your code with continuous integration servers and IDEs. By the end of the "Gradle Effective Implementation Guide" you will be able to use Gradle in your daily development. Writing tasks, applying plugins and creating build logic will be second nature.
Table of Contents (20 chapters)
Gradle Effective Implementation Guide
About the Author
About the Reviewers

Executing multiple tasks

With just a simple build script, we already learned that we have a couple of default tasks besides our own task that we can execute. To execute multiple tasks we only have to add each task name to the command line. Let's execute our custom task helloWorld and the built-in task tasks, as follows:

hello-world $ gradle helloWorld tasks
Hello world.

All tasks runnable from root project

Help tasks
dependencies - Displays the dependencies of root project 'hello-world'.
help - Displays a help message
projects - Displays the sub-projects of root project 'hello-world'.
properties - Displays the properties of root project 'hello-world'.
tasks - Displays the tasks runnable from root project 'hello-world' (some of the displayed tasks may belong to subprojects).

Other tasks

To see all tasks and more detail, run with --all.


Total time: 1.718 secs

We see the output of both the tasks. First, helloWorld is executed, followed by tasks. When executed, we see the task names prepended with a colon (:) and the output on the following lines.

Gradle executes the tasks in the same order as they are defined on the command line. Gradle will execute a task only once during the build. So even if we define the same task multiple times, it will be executed only once. This rule also applies when tasks have dependencies on other tasks. Gradle will optimize the task execution for us, and we don't have to worry about that.