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module RDF::N3::Algebra::Time
##
# For a date-time format string, its time:gmtime is the result of formatting the Universal Time of processing in the format given. If the format string has zero length, then the ISOdate standard format is used. `[ is time:gmtime of ""]` the therefore the current date time. It will end with "Z" as a timezone code.
#
# @see https://www.w3.org/TR/xpath-functions/#func-current-dateTime
class GmTime < RDF::N3::Algebra::ResourceOperator
NAME = :timeGmTime
URI = RDF::N3::Time.gmTime
##
# The time:gmTime operator takes string or dateTime and returns current time formatted according to the subject.
#
# @param [RDF::Term] resource
# @param [:subject, :object] position
# @return [RDF::Term]
# @see RDF::N3::ResourceOperator#evaluate
def resolve(resource, position:)
case position
when :subject
return nil unless resource.literal?
resource = "%FT%T%:z" if resource.to_s.empty?
RDF::Literal(DateTime.now.new_offset(0).strftime(resource.to_s))
when :object
return nil unless resource.literal? || resource.variable?
resource
end
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems