New target type: literals of language or literals of certain datatypes.

[JervenBolleman]

Use case rules.

Imagine a rule that triggers on any insert:

• of a language literal in German and uses an LLM to translate it automatically into French and Italian and store these in the store.
• of a literal with a DNA datatype immediately insert the reverse complement as well as biological use case.
• of a literal with a value in grams datatype automatically insert an equivalent value in troy ounces, etc.

A longer term goal is for "virtual triples" or index maintenance. Mostly around use cases raised in comments to this SPARQL-DEV.

[tpluscode]

Another specific target which could also be implemented as a Node Expressions and implemented in a Note and published as TTL for easy resuse?

Earlier proposal: #168

[JervenBolleman]

A yes a node expression: like

ex:DNALiteralShape
	a sh:NodeShape ;
	sh:target [
		a sh:SPARQLTarget ;
		sh:prefixes ex: ;
		sh:select """
			SELECT ?this
			WHERE {
				[] ?p  ?this .
                                FILTER(sameTerm(datatype(?this), ex:DNA)
			}
			""" ;
	] ;

Is that roughly what you suggest @tpluscode ?

[tpluscode]

tl;dr; you'd use sh:targetNode with a parametrised expression

[]
  a sh:NodeShape ;
  sh:targetNode [
    ex:objectsWithDatatype ( ex:DNA )
  ] ;
.

And then we share the definition of ex:objectsWithDatatype in a Group Note so that it can be easily imported with owl:imports

[VladimirAlexiev]

Another way to implement this would be with targetShape, see

• https://rdf4j.org/documentation/programming/shacl/#rsx---eclipse-rdf4j-shacl-extensions: a brief description
• https://rdf4j.org/shacl/extensions.html (@hmottestad the styling of this page is broken)
• https://www.ontotext.com/blog/shacl-ing-the-data-quality-dragon-iii-a-good-artisan-knows-their-tools/: a blog post