Class: Axiom::Attribute::Numeric

Inherits:
Object show all
Includes:
Axiom::Aggregate::Sum::Methods, Comparable
Defined in:
lib/axiom/attribute/numeric.rb

Overview

Represents a Numeric value in a relation tuple

Direct Known Subclasses

Decimal, Float, Integer

Constant Summary

Constants inherited from Axiom::Attribute

FalseClass, TrueClass

Instance Attribute Summary

Attributes inherited from Axiom::Attribute

#name, #type

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Comparable

#asc, #desc

Methods included from Function::Predicate::GreaterThan::Methods

#gt

Methods included from Function::Predicate::GreaterThanOrEqualTo::Methods

#gte

Methods included from Function::Predicate::LessThan::Methods

#lt

Methods included from Function::Predicate::LessThanOrEqualTo::Methods

#lte

Methods included from Axiom::Aggregate::Minimum::Methods

#minimum

Methods included from Axiom::Aliasable

#inheritable_alias

Methods included from Axiom::Aggregate::Maximum::Methods

#maximum

Methods included from Axiom::Aggregate::Mean::Methods

#mean

Methods included from Axiom::Aggregate::Variance::Methods

#variance

Methods included from Axiom::Aggregate::StandardDeviation::Methods

#standard_deviation

Methods included from Axiom::Aggregate::Sum::Methods

#sum

Methods included from Function::Predicate::Equality::Methods

#eq

Methods included from Function::Predicate::Exclusion::Methods

#exclude

Methods included from Function::Predicate::Inequality::Methods

#ne

Methods included from Function::Predicate::Inclusion::Methods

#include

Methods included from Axiom::Aggregate::Count::Methods

#count

Methods inherited from Axiom::Attribute

#call, coerce, #include?, infer_type, name_from, #optional?, #rename, #required?

Methods included from Visitable

#accept

Constructor Details

#initialize(_name, options = EMPTY_HASH) ⇒ undefined

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize a Numeric Attribute

Parameters:

  • _name (#to_sym) —

    the attribute name

  • options (#to_hash) (defaults to: EMPTY_HASH) —

    the options for the attribute

Options Hash (options):

  • :required (Boolean) — default: true —

    if true, then the value cannot be nil

  • :size (Range<::Numeric>) —

    The numeric range for a valid value



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# File 'lib/axiom/attribute/numeric.rb', line 37

def initialize(_name, options = EMPTY_HASH)
  super
  size = options[:size]
  if size
    @type = type.new do
      minimum(size.first)
      maximum(size.last)
    end
  end
end

Class Method Details

.type ⇒ Class<Types::Numeric>

The attribute type

Examples:

type = Axiom::Attribute::Numeric.type  # => Axiom::Types::Numeric

Returns:

  • (Class<Types::Numeric>) 


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# File 'lib/axiom/attribute/numeric.rb', line 19

def self.type
  Types::Numeric
end