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|
# frozen_string_literal: true
module Arel # :nodoc: all
module Nodes
class Binary < Arel::Nodes::NodeExpression
attr_accessor :left, :right
def initialize(left, right)
super()
@left = left
@right = right
end
def initialize_copy(other)
super
@left = @left.clone if @left
@right = @right.clone if @right
end
def hash
[self.class, @left, @right].hash
end
def eql?(other)
self.class == other.class &&
self.left == other.left &&
self.right == other.right
end
alias :== :eql?
end
module FetchAttribute
def fetch_attribute
if left.is_a?(Arel::Attributes::Attribute)
yield left
elsif right.is_a?(Arel::Attributes::Attribute)
yield right
end
end
end
class As < Binary
def to_cte
Arel::Nodes::Cte.new(left.name, right)
end
end
class Between < Binary; include FetchAttribute; end
class GreaterThan < Binary
include FetchAttribute
def invert
Arel::Nodes::LessThanOrEqual.new(left, right)
end
end
class GreaterThanOrEqual < Binary
include FetchAttribute
def invert
Arel::Nodes::LessThan.new(left, right)
end
end
class LessThan < Binary
include FetchAttribute
def invert
Arel::Nodes::GreaterThanOrEqual.new(left, right)
end
end
class LessThanOrEqual < Binary
include FetchAttribute
def invert
Arel::Nodes::GreaterThan.new(left, right)
end
end
class IsDistinctFrom < Binary
include FetchAttribute
def invert
Arel::Nodes::IsNotDistinctFrom.new(left, right)
end
end
class IsNotDistinctFrom < Binary
include FetchAttribute
def invert
Arel::Nodes::IsDistinctFrom.new(left, right)
end
end
class NotEqual < Binary
include FetchAttribute
def invert
Arel::Nodes::Equality.new(left, right)
end
end
class NotIn < Binary
include FetchAttribute
def invert
Arel::Nodes::In.new(left, right)
end
end
%w{
Assignment
Join
Union
UnionAll
Intersect
Except
}.each do |name|
const_set name, Class.new(Binary)
end
end
end
|
