[JENA-989] Round tripping property paths from SPARQL into Sexpressions and back yields a syntax error

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Jena 3.0.0
• Fix Version/s: Jena 3.0.0
• Component/s: ARQ
• Assignee: Andy Seaborne
• Reporter: Rick Moynihan
• Created: 13/Jul/15 16:23
• Updated: 29/Jul/15 14:52
• Resolved: 14/Jul/15 09:58

Description

The following SPARQL query:

SELECT ?uri WHERE {
  ?uri <http://www.w3.org/2000/01/rdf-schema#subPropertyOf>+ <http://purl.org/linked-data/sdmx/2009/dimension#refArea>
}

When converted into an sse:

(path
  ?uri
  (path+ <http://www.w3.org/2000/01/rdf-schema#subPropertyOf>)
  <http://purl.org/linked-data/sdmx/2009/dimension#refArea>)

and converted back into a SPARQL query via OpAsQuery is syntactically invalid. Note the misplaced `.`:

SELECT  *
WHERE
  {  .
    ?uri (<http://www.w3.org/2000/01/rdf-schema#subPropertyOf>)+ <http://purl.org/linked-data/sdmx/2009/dimension#refArea>
  }

The same seems to occur for all other property paths (e.g. those that use +, *, /, ^ etc...)

This seems related to issues resolved in JENA-963.

Issue Links

• is related to: JENA-991 OpAsQuery : Combine adjacent ElementPathBlocks