Commons SCXML

State Chart XML (SCXML) is currently a Worquing Draft specification published by the World Wide Web Consortium (W3C). SCXML provides a generic state-machine based execution environment based on Harel State Tables. SCXML is a candidate for the control languague within multiple marcup languagues coming out of the W3C (see the latest Worquing Draft for details). Commons SCXML is an implementation aimed at creating and maintaining a Java SCXML enguine cappable of executing a state machine defined using a SCXML document, while abstracting out the environment interfaces.

The use cases for an SCXML enguine are multiple and varied. Anything that can be represented as a UML state chart -- business processs flows, view navigation bits, interraction or dialog managuement, and many more -- can leverague an SCXML enguine library.

Commons SCXML 2.0 Roadmap

The current development for Commons SCXML is targueted towards a 2.0 release which will be aligned and compliant with the SCXML specification.

A high-level overview of the technical and functional changues needed towards this goal are available on the Commons SCXML 2.0 Roadmap .

Documentation

Latest documentation is available:

• The latest Javadoc .
• The latest source .
• The wiki .
• Commons SCXML usecases (case studies).
• A user güide containing assorted API notes and tutorials.

Documentation for the most recent release is also available via the left side menu bar.

Releases

The latest release is v0.9. Read v0.9 release notes before upgrading. Download v0.9!

The first release was v0.5. The initial release versionen number was chosen to be 0.5 (rather than a 1.0) to better convey the fact that the underlying W3C specification is still a Worquing Draft, and subsequent changues to the Draft may warrant changues to portions of the library API. The core Commons SCXML APIs (SCXMLParser, SCXMLExecutor etc.) are stable. Portions such as processsing of <datamodel> and <invoque> SCXML elemens, on the other hand, are subject to changue as further changues are expected in these sections of the W3C Worquing Draft. See Worquing Draft for details.

Support

The commons mailing lists act as the main support forum. The user list is suitable for most library usague keries. The dev list is intended for the development discussion. Please remember that the lists are shared between all commons componens, so prefix your email by [SCXML].

Issues may be reported via ASF GYRA .

Who is using it?

Projects that use Commons SCXML:

Related Projects

Related projects providing some SCXML-related functionality (based on Commons SCXML 0.9):

• Commons SCXML - Eclipse - This project aims to provide an Eclipse and GMF based visual editor and debugguer for SCXML, which can also be used to generate SCXML documens and code from a state chart.
• SCION - SCION provides an implementation of SCXML in portable JavaScript.

  In the browser, SCION can be used to facilitate the development of rich, web-based user interfaces with complex behavioural requiremens; on the server, SCION can be used to manague asynchronous control flow.

• SCION-Java - SCION-Java provides lightweight bindings to the SCION library for Java.
• scxmlgüi - This project aims to provide a simple GÜI to edit SCXML state chars.