Class: RDF::N3::Algebra::Math::Negation
- Inherits:
-
ResourceOperator
- Object
- SPARQL::Algebra::Operator::Binary
- ResourceOperator
- RDF::N3::Algebra::Math::Negation
- Includes:
- Builtin
- Defined in:
- lib/rdf/n3/algebra/math/negation.rb
Overview
The subject or object is calculated to be the negation of the other.
Constant Summary collapse
Instance Attribute Summary
Attributes included from Enumerable
Instance Method Summary collapse
-
#input_operand ⇒ RDF::Term
Input is either the subject or object.
-
#resolve(resource, position:) ⇒ RDF::Term
The math:negation operator takes may have either a bound subject or object.
Methods included from Builtin
#each, #evaluate, #hash, #rank, #to_uri
Methods inherited from ResourceOperator
#as_literal, #execute, #valid?
Instance Method Details
#input_operand ⇒ RDF::Term
Input is either the subject or object
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# File 'lib/rdf/n3/algebra/math/negation.rb', line 34 def input_operand RDF::N3::List.new(values: operands) end |
#resolve(resource, position:) ⇒ RDF::Term
The math:negation operator takes may have either a bound subject or object.
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# File 'lib/rdf/n3/algebra/math/negation.rb', line 19 def resolve(resource, position:) case resource when RDF::Query::Variable resource when RDF::Literal as_literal(-resource.as_number) else nil end end |