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Contents
module RDF::N3::Algebra::Log
##
# True if the subject and object are the same RDF node (symbol or literal). Do not confuse with owl:sameAs. A cwm built-in logical operator, RDF graph level.
class EqualTo < RDF::N3::Algebra::ResourceOperator
NAME = :logEqualTo
URI = RDF::N3::Log.equalTo
##
# Resolves inputs as terms.
#
# @param [RDF::Term] resource
# @param [:subject, :object] position
# @return [RDF::Literal]
# @see RDF::N3::ResourceOperator#evaluate
def resolve(resource, position:)
resource if resource.term?
end
# Both subject and object are inputs.
def input_operand
RDF::N3::List.new(values: operands)
end
##
# @param [RDF::Literal] left
# a literal
# @param [RDF::Literal] right
# a literal
# @return [RDF::Literal::Boolean]
def apply(left, right)
RDF::Literal(left.sameTerm?(right))
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems