Scalatra is a free and open source

web application framework A web framework (WF) or web application framework (WAF) is a software framework that is designed to support the development of web applications including web services, web resources, and web APIs. Web frameworks provide a standard way to build and ...

written in Scala. It is a port of the Sinatra framework written in

Ruby Ruby is a pinkish-red-to-blood-red-colored gemstone, a variety of the mineral corundum ( aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapph ...

. Scalatra is an alternative to the

Lift Lift or LIFT may refer to: Physical devices * Elevator, or lift, a device used for raising and lowering people or goods ** Paternoster lift, a type of lift using a continuous chain of cars which do not stop ** Patient lift, or Hoyer lift, mobile ...

Play! Play most commonly refers to: * Play (activity), an activity done for enjoyment * Play (theatre), a work of drama Play may refer also to: Computers and technology * Google Play, a digital content service * Play Framework, a Java framework * P ...

, and Unfiltered frameworks. Scalatra is an example of a

microframework A microframework is a term used to refer to minimalistic web application frameworks. It is contrasted with full-stack frameworks. It lacks most of the functionality which is common to expect in a full-fledged web application framework, such as: * ...

, a web software development framework which attempts to be as minimal as possible. A full Scalatra application can be written in very few lines of code: package org.example.app import org.scalatra._ class MyScalatraFilter extends ScalatraFilter From this tiny

domain-specific language A domain-specific language (DSL) is a computer language specialized to a particular application domain. This is in contrast to a general-purpose language (GPL), which is broadly applicable across domains. There are a wide variety of DSLs, ranging ...

, Scalatra can be expanded into a minimal but full-featured model-view-controller web framework. For example, additional libraries can be attached in order to provide templating, object-relational mapping, and

unit testing Unit testing, component or module testing, is a form of software testing by which isolated source code is tested to validate expected behavior. Unit testing describes tests that are run at the unit-level to contrast testing at the Integration ...

or behaviour driven development support.

Software built with Scalatra

LinkedIn LinkedIn () is an American business and employment-oriented Social networking service, social network. It was launched on May 5, 2003 by Reid Hoffman and Eric Ly. Since December 2016, LinkedIn has been a wholly owned subsidiary of Microsoft. ...

used Scalatra to power its now-defunct Signal

API An application programming interface (API) is a connection between computers or between computer programs. It is a type of software interface, offering a service to other pieces of software. A document or standard that describes how to build ...

. *Parts of ''

The Guardian ''The Guardian'' is a British daily newspaper. It was founded in Manchester in 1821 as ''The Manchester Guardian'' and changed its name in 1959, followed by a move to London. Along with its sister paper, ''The Guardian Weekly'', ''The Guardi ...

s API services are built in Scalatra. *http://gov.uk has built its API systems using Scalatra.

References

External links

*
Scalatra's GitHub repositoryInfoQ article on Scalatra
Java platform Free software programmed in Scala Software using the BSD license Web frameworks {{web-software-stub