Content deleted Content added
Tag: possible conflict of interest |
m compound modifier |
||
| (32 intermediate revisions by 25 users not shown) | |||
Line 1:
{{Short description|XML-based markup language}}
{{Use mdy dates|date=June 2013}}
{{Infobox file format
Line 12 ⟶ 13:
| owner = [[World Wide Web Consortium]]
| genre = [[Markup language]]
| latest release version =
| latest release date =
| container for =
| contained by =
Line 20 ⟶ 21:
| url = [http://www.w3.org/TR/scxml/ http://www.w3.org/TR/scxml/]
}}
'''SCXML''' stands for State Chart XML: State Machine Notation for Control Abstraction. It is an [[XML]]-based [[markup language]] which provides a generic state-machine based execution environment based on [[Harel statechart]]s.▼
▲'''SCXML''' stands for State Chart XML: State Machine Notation for Control Abstraction. It is an [[XML]]-based [[markup language]]
SCXML is able to describe complex [[Finite state machine|state-machines]]. For example, it is possible to describe notations such as sub-states, parallel states, synchronization, or concurrency, in SCXML.▼
▲SCXML is able to describe complex [[
==Goals==
The objective of this standard is to
One of the goals of this language is to make sure that the language is compatible with CCXML and that there is an easy path for existing CCXML scripts to be converted to SCXML without major changes to the programming model or document structure (for example, by using an [[XSL Transformations|XSL Transformation]]).
The
| url=
| title=
| publisher=[[World Wide Web Consortium]]
| date=
| accessdate=
==
According to the W3C SCXML specification,<ref>[http://www.w3.org/TR/scxml/ State Chart XML (SCXML): State Machine Notation for Control Abstraction specification]
*As a high-level dialog language controlling VoiceXML 3.0's encapsulated speech modules (voice form, voice picklist, etc.)
*As a voice application metalanguage, where in addition to VoiceXML 3.0 functionality, it may also control database access and business logic modules.
*As a multimodal control language in the MultiModal Interaction framework, combining VoiceXML 3.0 dialogs with dialogs in other modalities including keyboard and mouse, ink, vision, haptics, etc. It may also control combined modalities such as lipreading (combined [[speech recognition]] and vision) speech input with keyboard as fallback, and multiple keyboards for multi-user editing.
*As the state machine framework for a future version of CCXML.
*As an extended call center management language, combining CCXML call control functionality with computer-telephony integration for call centers that integrate telephone calls with computer screen pops, as well as other types of message exchange such as chats, instant messaging, etc.
*As a general [[process control]] language in other contexts not involving speech processing.
The draft W3C [[VoiceXML]] 3.0 specification<ref>[http://www.w3.org/TR/voicexml30/ Voice Extensible Markup Language (VoiceXML) 3.0 specification]</ref> includes State Chart and SCXML Representation to define functionality.
===Multimodal applications===
[[File:Multimodal2.png|A multimodal configuration]]
The W3C document Authoring Applications for the Multimodal Architecture<ref>[http://www.w3.org/TR/mmi-auth/ Authoring Applications for the Multimodal Architecture]</ref> describes a multimodal system
(Apache Licenced, see on [http://jakarta.apache.org/commons/scxml/usecases/scxml-stopwatch.html this page])▼
==Implementations==
*[http://scxmlcc.org scxmlcc] An efficient scxml to C++ compiler.
*[http://jakarta.apache.org/commons/scxml/ Apache Commons SCXML], a pure Java library to parse and execute SCXML diagrams
*[
*[https://github.com/tklab-tud/uscxml uSCXML] C/C++ interpreter and transformer/compiler with language bindings for Java and C#. Full ECMAScript support via JavaScriptCore or Google's v8, additional LUA and Prolog datamodels, only rudimentary support for XPath datamodel. PROMELA datamodel for formal verification with the SPIN model-checker.
*[https://github.com/Phrogz/LXSC LXSC] Lua XML StateChart interpreter - parses and executes SCXML state machines with a Lua data model.
*[http://code.qt.
*[https://xstate.js.org XState] implemented in TypeScript.
== Inactive implementations ==
The following implementations are inactive, i.e., the last change to their source code was made more than two years ago:
*[http://www.ling.gu.se/~lager/Labs/SCXML-Lab/ Web interface to an experimental SCXML implementation in the Oz programming language]
*[https://github.com/pelatimtt/Legian Legian] An SCXML engine implemented in Java using Rhino as a Javascript engine. It also supports some additional features such as custom tag libraries and includes. It is not fully W3C compliant.
*[
▲*[http://qt.gitorious.org/qt-labs/scxml Qt SCXML Engine] implemented in C++ as well and tightly integrated with their [[Signals and slots|Signals and Slots]] concept.
▲*[http://github.com/jroxendal/PySCXML PySCXML] a Python-implementation under active development. Supports a wide range of technologies, including websockets and SOAP. Highly standards-compliant. Also supports the ECMAScript datamodel.
*[http://pyscxml.spyderbrain.com The PySCXML Console] a web-based interactive SCXML console for running and interacting with SCXML documents. Supports the ECMAScript datamodel.
*[
▲*[http://code.google.com/p/scxmlgui/ SCXMLgui] Java Visual Editor for SCXML.
▲*[https://github.com/jbeard4/SCION SCION] SCXML implemented in portable JavaScript.
▲*[http://github.com/Touffy/JSSCxml JSSCxml] a Web browser implementation under active development. Highly conformant, with good support for DOM Events. Only supports the ECMAScript datamodel.
==See also==
Line 107 ⟶ 86:
==External links==
*[http://www.w3.org/TR/scxml/ W3C SCXML
▲
{{W3C standards}}
| |||