Class: SPARQL::Algebra::Operator::Nullary Abstract

Inherits:

SPARQL::Algebra::Operator

• Object
• SPARQL::Algebra::Operator
• SPARQL::Algebra::Operator::Nullary

Defined in:

lib/sparql/algebra/operator.rb

Overview

This class is abstract.

A SPARQL nullary operator.

Operators of this kind take no operands.

Direct Known Subclasses

Now, Rand, StrUUID, UUID

Constant Summary

ARITY =

0

Constants inherited from SPARQL::Algebra::Operator

IsURI, URI

Constants included from Expression

Expression::PATTERN_PARENTS

Instance Attribute Summary

Attributes inherited from SPARQL::Algebra::Operator

#operands

Instance Method Summary

• #initialize(**options) ⇒ Nullary constructor

  A new instance of Nullary.

Methods inherited from SPARQL::Algebra::Operator

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

Methods included from Expression

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

Constructor Details

#initialize(**options) ⇒ Nullary

Returns a new instance of Nullary.

Parameters:

• options (Hash{Symbol => Object}) —

  any additional options (see SPARQL::Algebra::Operator#initialize)

# File 'lib/sparql/algebra/operator.rb', line 900

def initialize(**options)
  super
end