“ShEx”的意思、由来-开放百科全书

词条 ShEx

释义

Example
Implementations
Online playgrounds and demos
References
Further reading
See also

{{Infobox programming language
| name = ShEx - Shape Expressions
| logo =
| paradigm = Data Validation
| year_started = 2013
| designer = Eric Prud'hommeaux, Iovka Boneva, Jose Emilio Labra Gayo, Gregg Kellogg, [https://www.w3.org/community/shex/ Shape Expressions W3C Community Group]
| programming language = Javascript, Scala
| latest_release_version = 2.1
| latest_release_date = {{Start date and age|2018|11|21}}
| file ext = shex, sx
| scope = Semantic Web
| abbreviation = ShEx
| website = {{url|https://www.w3.org/community/shex/}}
| implementations = [https://github.com/shexSpec/shex.js/ shex.js]^[1], Shaclex^[1]
| influenced by = Turtle, SPARQL, RelaxNG
| influenced = SHACL
}}

Shape Expressions (ShEx) ^[2] is a language for validating and describing RDF.

It was proposed at the 2012 RDF Validation Workshop^[3] as a high-level, concise language for RDF validation.

The shapes can be defined in a human-friendly compact syntax called ShExC or using any Resource Description Framework (RDF) serialization formats like JSON-LD or Turtle.

ShEx expressions can be used both to describe RDF and to automatically check the conformance of RDF data.

The syntax of ShEx is similar to Turtle and SPARQL while the semantics is inspired by regular expression languages like RelaxNG.

Example

PREFIX :

PREFIX schema:

Person {

 schema:name  xsd:string   ; schema:knows @:Person   * ;

}

The previous example declares that nodes conforming to shape Person must have one property schema:name with a string value and zero or more properties schema:knows whose values must conform with shape Person.

Implementations

[https://github.com/shexSpec/shex.js/ shex.js]: Javascript
shaclex: Scala library with support for Jena (framework) and RDF4J
[https://pypi.org/project/PyShEx/ PyShEx]: Python
[https://github.com/iovka/shex-java shexjava]: Java

Online playgrounds and demos

[https://rawgit.com/shexSpec/shex.js/master/doc/shex-simple.html ShExSimple]: Online demo based on [https://github.com/shexSpec/shex.js/ shex.js]
rdfshape: online demo based on shaclex

References

1. ^¹{{cite book | last1 = Labra Gayo | first1 = Jose Emilio | last2 = Prud'hommeaux | first2 = Eric | last3 = Boneva | first3 = Iovka | last4 = Kontokostas | first4 = Dimitris | title = Validating RDF Data | publisher = Morgan & Claypool | pages = 328 | date = 2018 | isbn = 9781681731650 | url = http://book.validatingrdf.com/ }}
2. ^http://shex.io/shex-semantics-20170327/
3. ^https://www.w3.org/2012/12/rdf-val/

Example

Implementations

Online playgrounds and demos

References

Further reading

See also