class RDF::N3::Algebra::Log::OutputString
The subject is a key and the object is a string, where the strings are to be output in the order of the keys.
Constants
- NAME
- URI
Public Instance Methods
Source
# File lib/rdf/n3/algebra/log/output_string.rb, line 30 def apply(term1, term2) (@options[:strings][term1.to_s] ||= []) << term2.to_s term2 end
Returns ‘term2`, but adds `term2` as an output keyed on `term1`.
@param [RDF::Term] term1
an RDF term
@param [RDF::Term] term2
an RDF term
@return [RDF::Literal::Boolean] ‘true` or `false` @raise [TypeError] if either operand is not an RDF
term or operands are not comperable
@see RDF::Term#==
Source
# File lib/rdf/n3/algebra/log/output_string.rb, line 36 def input_operand RDF::N3::List.new(values: operands) end
Both subject and object are inputs.
Source
# File lib/rdf/n3/algebra/log/output_string.rb, line 15 def resolve(resource, position:) SPARQL::Algebra::Expression.cast(RDF::XSD.string, resource) if resource.term? end
Resolves inputs as strings.
@param [RDF::Term] resource @param [:subject, :object] position @return [RDF::Term] @see RDF::N3::ResourceOperator#evaluate