FOLD/UNFOLD aggregates highlighted as invalid in Fuseki UI

Ostrzyciel commented 10 hours ago

Version

5.2.0

What happened?

A recent version of Jena added the support for SPARQL CDTs, which includes a new aggregate (FOLD) and an operator (UNFOLD). The two thingies work fine, but in the SPARQL editor in the Fuseki UI, they are highlighted in red as invalid syntax.

Example query:

SELECT ?s (FOLD(?p, ?o) AS ?map) WHERE {
  ?s ?p ?o
}
GROUP BY ?s

How it appears in the editor:

Second example:

SELECT * WHERE {
  ?s ?p ?list .
  UNFOLD(?list as ?element)
}

Relevant output and stacktrace

No response

Are you interested in making a pull request?

None

Ostrzyciel commented 10 hours ago

I corrected the report – initially I mistakenly wrote that UNFOLD is an aggregate, while only FOLD is one. Nonetheless, the issue is the same.

afs commented 9 hours ago

The syntax highlighter is codemirror based via the maintained yasgui for.

https://github.com/codemirror/codemirror5/blob/master/mode/sparql/sparql.js

As FOLD, UNFOLD and ADJUST are Jena specific extensions, they need adding to the keywords.

Other Jena extensions:

LATERAL
MEDIAN and MODE
SEMIJOIN, ANTIJOIN (coming soon!)
LET
A few others

More importantly, add the SPARQL Update keywords.

apache / jena