class SPARQL::Algebra::Operator::StrLang
The SPARQL
`strlang` operator.
@example
(prefix ((: <http://example.org/>)) (project (?s ?s2) (extend ((?s2 (strlang ?str "en-US"))) (filter (langMatches (lang ?str) "en") (bgp (triple ?s :str ?str))))))
Constants
- NAME
Public Instance Methods
apply(value, langTag, **options)
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Constructs a literal with lexical form and type as specified by the arguments.
@param [RDF::Literal] value
a literal
@param [RDF::Literal] langTag
datatype
@return [RDF::Literal] a datatyped literal @see www.w3.org/TR/sparql11-query/#func-strlang
# File lib/sparql/algebra/operator/strlang.rb, line 28 def apply(value, langTag, **options) raise TypeError, "Literal #{value.inspect} is not simple" unless value.simple? RDF::Literal.new(value.to_s, language: langTag.to_s) end