Class: SPARQL::Algebra::Operator::Desc

Inherits:

Asc

• Object
• SPARQL::Algebra::Operator
• Unary
• Asc
• SPARQL::Algebra::Operator::Desc

Defined in:

vendor/bundler/ruby/2.7.0/bundler/gems/sparql-ebcec52fe1e6/lib/sparql/algebra/operator/desc.rb

Overview

The SPARQL descending sort operator.

Examples:

(prefix ((foaf: <http://xmlns.com/foaf/0.1/>))
  (project (?name)
    (order ((desc ?name))
      (bgp (triple ?x foaf:name ?name)))))

See Also:

• http://www.w3.org/TR/sparql11-query/#modOrderBy

Constant Summary

NAME =

:desc

Constants inherited from Unary

Unary::ARITY

Constants inherited from SPARQL::Algebra::Operator

ARITY, IsURI, URI

Instance Attribute Summary

Attributes inherited from SPARQL::Algebra::Operator

#operands

Method Summary

Methods inherited from Asc

#evaluate

Methods included from Evaluatable

#apply, #evaluate, #memoize, #replace_aggregate!, #replace_vars!

Methods inherited from Unary

#initialize

Methods inherited from SPARQL::Algebra::Operator

#aggregate?, arity, #base_uri, base_uri, base_uri=, #boolean, #constant?, #each_descendant, #eql?, #evaluatable?, evaluate, #executable?, #first_ancestor, for, #initialize, #inspect, #ndvars, #node?, #operand, #optimize, #parent, #parent=, prefixes, #prefixes, prefixes=, #rewrite, #to_binary, #to_sxp, #to_sxp_bin, #validate!, #variable?, #vars

Methods included from Expression

cast, #constant?, #evaluate, extension, extensions, for, #invalid?, new, #node?, open, #optimize, parse, register_extension, #to_sxp_bin, #valid?, #validate!, #variable?

Constructor Details

This class inherits a constructor from SPARQL::Algebra::Operator::Unary