Background
Import & Export
Import Elements
Options
Examples
Basic Examples
See Also
GraphStore`
Wolfram Language code: Wolfram Language code: Wolfram Language code: Wolfram Language code:
SPARQLQuery (.rq)
Background
-
- MIME type: application/sparql-query.
- The SPARQL query syntax is specified at https://www.w3.org/TR/sparql11-query/.
Import Elements
- General Import elements:
-
"Elements" list of elements and options available in this file"Rules" full list of rules for each element and option"Options" list of rules for options, properties and settings
- Data representation elements:
-
"Data" symbolic SPARQL query operator"Base" base IRI used to resolve relative IRIs"Prefixes" association of prefixes to namespace IRIs
Options
- Import options:
-
"Base" Automatic base IRI used to resolve relative IRIs
- The value of "Base" is only used if the file does not specify a base IRI.
- "Base" can take the following values:
-
Automatic the file name of the imported fileNone no base IRI
- Export options:
-
"Base" None produce IRIs relative to this base"Prefixes" <||> produce prefixed names using these prefixes
- A prefixed name has the form pre:local. The corresponding IRI is obtained by joining the namespace IRI associated with the prefix pre with the local part local.
- "Base" and "Prefixes" can be used to shorten an exported file. These options do not change the meaning of the SPARQL query that the file represents.
Examples
Basic Examples (1)
Needs["GraphStore`"]Import a SPARQL query string:
query = ImportString["
select ?author (count(?work) as ?count) where {
?work <http://schema.org/author> ?author .
} group by ?author
", "SPARQLQuery"]Export as a query string:
ExportString[query, "SPARQLQuery"]Specify a prefix to shorten IRIs:
ExportString[query, "SPARQLQuery", "Prefixes" -> <|
"schema" -> "http://schema.org/"
|>]See Also
Formats: SPARQLUpdate