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Gradle Effective Implementation Guide

Gradle Effective Implementation Guide

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Gradle Effective Implementation Guide

Gradle Effective Implementation Guide

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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)
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Gradle Effective Implementation Guide
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
1
Index

Defining dependencies between tasks


Until now, we have defined tasks independent of each other. But in our projects we need dependencies between tasks. For example, a task to package compiled class files is dependent on the task to compile the class files. The build system should then first run the compile task, and when the task is finished, the package task must be executed.

In Gradle, we can add task dependencies with the dependsOn method for a task. First, let's look at a simple task dependency:

task first << { task ->
    println "Run ${task.name}"
}

task second << { task ->
    println "Run ${task.name}"
}

// Define dependency of task second on task first
second.dependsOn 'first'

Note that we define the dependency of task second on task first, in the last line. When we run the script, we see that the first task is executed before the second task:

$ gradle second
:first
Run first
:second
Run second

BUILD SUCCESSFUL

Total time: 2.145 secs

Another way to define the...

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