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module Arel
module Predicates
class Binary < Predicate
def eval(row)
operand1.eval(row).send(operator, operand2.eval(row))
end
end
class Equality < Binary
def operator; :== end
end
class Inequality < Equality
def eval(row)
operand1.eval(row) != operand2.eval(row)
end
end
class GreaterThanOrEqualTo < Binary
def operator; :>= end
end
class GreaterThan < Binary
def operator; :> end
end
class LessThanOrEqualTo < Binary
def operator; :<= end
end
class LessThan < Binary
def operator; :< end
end
class Match < Binary
def operator; :=~ end
end
class NotMatch < Binary
def operator; :!~ end
end
class In < Binary
def operator; :include? end
end
class NotIn < Binary
def eval(row)
!(operand1.eval(row).include?(operand2.eval(row)))
end
end
end
end
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