SHACL support

This issue tracks SHACL support in RDFUnit

Scopes

• sh:targetNode
• sh:targetClass
• sh:targetSubjecsOf
• sh:targetObjects

SHACL Core Constraint Components

• sh:class
• sh:datatype
• sh:nodeKind
• sh:minCount
• sh:maxCount
• sh:minExclusive
• sh:minInclusive
• sh:maxExclusive
• sh:maxInclusive
• sh:minLength
• sh:maxLength
• sh:pattern
• sh:languageIn (does not yet match cases like @en / @en-us, only works for exact matches for now)
• sh:uniqueLang
• sh:equals
• sh:disjoint
• sh:lessThan
• sh:lessThanOrEquals
• sh:not
• sh:and (partial support in top-level sh:and constraints)
• sh:or
• sh:xone
• sh:node
• sh:property
• sh:qualifiedValueShape, sh:qualifiedMinCount, sh:qualifiedMaxCount
• sh:closed, sh:ignoredProperties
• sh:hasValue
• sh:in

SPARQL-based Constraints

• Almost fully supported
  • shapesGraph prebinding is not supported
  • currentShape prebinding is not supported
  • projection expressions in SPARQL queries are not yet supported e.g. the path variable in SELECT ?this (<a> AS ?path) WHERE {...} is not yet supported (planned to be). what can be done instead for now is SELECT ?this ?path WHERE { BIND(<a> AS ?path) ...}

SPARQL-based Constraint Components

• Supported
  • noticed some strange behavior in complex ASK-based validators and node constraints that is investigated. simple ASK-based validators that contain only a filter clause are well supported.

Actually, all of the supported SHACL-Core is defined in this document which are SPARQL-based Constraint Components

Some pre-binding corner cases are not covered yet and are under development (see implementation report (to be submitted soon))

[jimkont]

Hi, for those following this issue (cc/ @akuckartz , @nandana , @chile12 , @gcpdev, @seebi) the description is now updated to the latest SHACL support from RDFUnit. Thanks to @neradis an implementation report will be submitted soon and a new artifact will be published to maven central after some polishing. Until then, you can use latest master branch for testing.

Any feedback / bug reports are more than welcome

[tomas-knap]

Great, we will try it out!