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Gradle Dependency Management
Gradle Dependency Management

Gradle Dependency Management:

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Gradle Dependency Management

Chapter 2. Working with Repositories

In the previous chapter, you learned how to define dependencies for your project. Those dependencies are mostly stored somewhere in a repository or a directory structure. A repository usually has a structure to support different versions for the same dependency. Also, some metadata, such as the other dependencies for a module, is saved in the repository.

In our build files, we must define the location of a repository for our dependencies. We can mix different types of repositories, such as Maven and Ivy. We can even use a local filesystem as a repository. We will see how we can define and configure repositories in our build files.

Also, Gradle offers the option of configuring the repository layout, if the repository is using a custom layout. We will learn how to provide credentials for repositories with basic authentication.

Declaring repositories

If we want to add dependencies from a repository in a Gradle build file, we must explicitly add the repositories configuration block. Within the configuration block, we define the location of the repository and maybe some extra configuration. In the following example of a build file, we define a Maven repository with a custom location:

// Repositories configuration block,
// must be present to define and
// configure repositories to get
// dependencies in our build script.
repositories {

  // Sample Maven repository with a
  // custom location.
  maven {
    url 'http://mycompany.net/maven'
  }

}

We can include several repositories in our build file. We can even mix the type of repositories, for example to, include both the Ivy repository and a local filesystem. Gradle supports the following types of repositories:

Type

Description

Maven JCenter repository

This is a preconfigured repository for Bintray JCenter

Maven central repository

This is a preconfigured...

Using different protocols

The Maven and Ivy repositories can be accessed via several protocols. We already learned that we can use the http and https protocols. However, we can also use the file and sftp protocols. We must provide credentials when we use the sftp protocol. The file protocol doesn't support authentication.

The next example build file will use the file and sftp protocols to define the Maven and Ivy repositories:

repositories {
  ivy {
    // Use file protocol, for example an
    // accessible network share or local directory.
    url 'file://Volumes/shared/developers/repo'
  }

  maven {
    url 'sftp://ourcompany.com:22/repo'

    // With the sftp protocol we must provide
    // the username and password.
    credentials {
      username 'developer'
      password 'secret'
    }
  }
}

Summary

In this chapter, you learned how to define repositories in your Gradle build scripts. You saw how to use predefined shortcut methods: jcenter, mavenCentral, and mavenLocal. To access a Maven repository at a custom location, we can use the url property and the maven method. When we configure an Ivy repository, we have the most control. We can specify a URL, and also the layout pattern of the repository. You learned that you can also use a flat directory repository in your build scripts.

You saw how to provide credentials for repositories with basic authentication. You now know how to save the username and password outside your build script. Finally, you learned how to use different transport protocols to access repositories.

In the next chapter, we will see how Gradle will resolve dependencies.

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Description

If you work on Java projects, use Gradle as a build automation tool, and you use dependencies in your project, this is the book for you. Additionally, if you want to deploy your project artifacts as dependencies for other developers using Gradle, you've found the right book.

What you will learn

  • Define dependencies in your Java projects
  • Publish your artifacts to Maven and Ivy repositories
  • Configure transitive dependencies
  • Install your artifacts in Bintray
  • Customize the resolution of dependency rules
  • Use your own code as dependencies in a multimodule project
  • Configure repositories to resolve dependencies
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Jun 17, 2015
Length: 188 pages
Edition : 1st
Language : English
ISBN-13 : 9781784392789
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Product Details

Publication date : Jun 17, 2015
Length: 188 pages
Edition : 1st
Language : English
ISBN-13 : 9781784392789
Vendor :
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Languages :
Tools :

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Table of Contents

8 Chapters
1. Defining Dependencies Chevron down icon Chevron up icon
2. Working with Repositories Chevron down icon Chevron up icon
3. Resolving Dependencies Chevron down icon Chevron up icon
4. Publishing Artifacts Chevron down icon Chevron up icon
5. Publishing to a Maven Repository Chevron down icon Chevron up icon
6. Publishing to Bintray Chevron down icon Chevron up icon
7. Publishing to an Ivy Repository Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Full star icon 5
(3 Ratings)
5 star 100%
4 star 0%
3 star 0%
2 star 0%
1 star 0%
Ganesh Oct 31, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
great book forever.
Amazon Verified review Amazon
Chris Everett Sep 08, 2015
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I have recently switched to Gradle as an automation tool for a work project. Previously dealt only with Java. I chanced upon this book & its a blessing. If you want to learn how to deploy your artifacts to repositories with Gradle and through code snippets and real-life examples then this the book you would want.
Amazon Verified review Amazon
CS Aug 26, 2015
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I have been working in java for quite a time and got introduced to Gradle. The code samples and examples in the book are really helpful, made my job way easier. Handling dependencies in my project has become a simple task for me, all due the this well written book. This book helps with managing and deploying dependencies in your project, I highly recommend it.
Amazon Verified review Amazon
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