Interface SparqlContext

Data-factoryMixins to be used when constructing rdf primitives.

Currently scoped base IRI. Only used to resolve the IRIs of function calls for namedAggregatorCallback.

Decides whether the function with the given full IRI is a custom aggregate. Without it, validation assumes any function call might be one. Can be called multiple times per function call.

Set of queryModes. Primarily used for note 8, 14.

Current scoped prefixes. Used to validate parsed prefixes are known, and to resolve the IRIs of function calls for namedAggregatorCallback.

Reject select expressions that use a variable bound by an earlier select expression in a grouped query, like SELECT (COUNT(?o) AS ?c) (?c + 1 AS ?d) WHERE { ?s ?p ?o }. In an ungrouped query, this reuse is always allowed: https://www.w3.org/TR/sparql11-query/#selectExpressions

In SELECT expressions, the variable may be used in an expression later in the same SELECT clause In a grouped query, the SPARQL 1.1 text does not allow it, since only aggregates, constants, and GROUP BY variables may be projected: https://www.w3.org/TR/sparql11-query/#aggregateRestrictions SPARQL 1.2 allows it (https://github.com/w3c/sparql-query/pull/380): https://www.w3.org/TR/sparql12-query/#aggregateRestrictions Defaults to false, following SPARQL 1.2 and since the algebra does not really care.

Can be used to disable the validation that used variables in a select clause are in scope.