[Grails][Grails] is a framework used to build web applications with the [Groovy][Groovy] programming language. The core framework is very extensible and there are numerous [plugins][plugins] available that provide easy integration of add-on features. [Grails]: http://grails.org/ [Groovy]: http://groovy-lang.org/ [plugins]: http://grails.org/plugins/
You need a Java Development Kit (JDK) installed, but it is not necessary to install Groovy because it's bundled with the Grails distribution.
To install Grails, visit http://grails.org/Download and download the version you would like to use. Set a GRAILS_HOME environment variable to point to the root of the extracted download and add GRAILS_HOME/bin to your executable PATH. Then in a shell, type the following:
grails create-app sampleapp
cd sampleapp
grails run-app
To build Grails, clone this GitHub repository and execute the install Gradle target:
git clone https://github.com/grails/grails-core.git
cd grails-core
./gradlew install
Releases of Grails are automated by Travis CI.
To create a release perform the following steps first update the Grails version in build.gradle and grails-core/src/test/groovy/grails/util/GrailsUtilTests.java then add them to git:
$ git add build.gradle grails-core/src/test/groovy/grails/util/GrailsUtilTests.java
$ git commit -m "Prepare release"
$ git push
After pushing these changes to the repository and wait for the build to complete. During this phase the JAR files will be uploaded to the Grails Artefactory Repository.
Once the build completes successfully then tag the release using Git. The tag should begin with the letter 'v'. For example:
$ git tag v3.0.1
$ git push --tags
The tagged release will be automatically uploaded to Sonatype OSS and Github Releases.
Although Grails doesn't require the JARs to be in Maven Central for a release, without signing in releasing the staged release via Sonatype OSS the JARs will not be synced to Maven Central.
Grails and Groovy are licensed under the terms of the [Apache License, Version 2.0][Apache License, Version 2.0]. [Apache License, Version 2.0]: http://www.apache.org/licenses/LICENSE-2.0.html
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