Package ratpack.groovy

Support for writing Ratpack applications in the Groovy programming language.

Key Features

The Groovy support provides the following key features:

• A Closure based Handler Chain building DSL - see GroovyChain.
• Dynamic templates based on embedded groovy code - see TextTemplateModule.
• Defining applications as a single script - see Groovy.Ratpack.

Use of closures and DelegatesTo

Ratpack makes heavy use of a feature of Groovy 2.1 that allows the delegate of a closure to be specified via the type system. Namely, the DelegatesTo annotation. On all parts of the API where a Closure is being accepted as a method parameter, the parameter will be annotated with this annotation. This specifies the type of the closure delegate object during execution. For more information on closure delegates, see this article.

When reading the API reference, it's important to take note of the DelegatesTo annotation on closure parameters. This parameter indicates what type to look at for information on what the closure can do.

Interface Summary

Interface	Description
Groovy.Ratpack	The definition of a Groovy Ratpack application.

Class Summary

Class	Description
Groovy	Static methods for specialized Groovy integration.
Groovy.Script	Methods for working with Groovy scripts as application components.
GroovyRatpackMain	A boilerplate entry point, which combines RatpackServer.start(Action) and Groovy.Script.app().