Class: SPARQL::Algebra::Operator::Unary Abstract

Inherits:

SPARQL::Algebra::Operator

• Object
• SPARQL::Algebra::Operator
• SPARQL::Algebra::Operator::Unary

Defined in:

lib/sparql/algebra/operator.rb

Overview

This class is abstract.

A SPARQL unary operator.

Operators of this kind take one operand.

Direct Known Subclasses

Abs, Asc, Ask, BNode, Bound, Ceil, Datatype, Day, Delete, DeleteData, DeleteWhere, Distinct, EncodeForURI, Exists, Floor, Hours, IRI, Insert, InsertData, IsBlank, IsIRI, IsLiteral, IsNumeric, IsTriple, LCase, Lang, MD5, Minutes, Month, Negate, Not, NotExists, Object, PathOpt, PathPlus, PathStar, PathZero, Predicate, Reduced, Reverse, Round, SHA1, SHA256, SHA384, SHA512, Seconds, Str, StrLen, Subject, TZ, Timezone, UCase, Year

Constant Summary

ARITY =

1

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(arg, **options) ⇒ Unary constructor

  A new instance of Unary.

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(arg, **options) ⇒ Unary

Returns a new instance of Unary.

Parameters:

• arg (RDF::Term) —

  the operand

• options (Hash{Symbol => Object}) —

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

# File 'lib/sparql/algebra/operator.rb', line 919

def initialize(arg, **options)
  super
end