module Arel module Predicates class Binary < Predicate def to_sql(formatter = nil) "#{operand1.to_sql} #{predicate_sql} #{operand1.format(operand2)}" end end class CompoundPredicate < Binary def to_sql(formatter = nil) "(#{operand1.to_sql(formatter)} #{predicate_sql} #{operand2.to_sql(formatter)})" end end class Or < CompoundPredicate def predicate_sql; "OR" end end class And < CompoundPredicate def predicate_sql; "AND" end end class Equality < Binary def predicate_sql operand2.equality_predicate_sql end end class GreaterThanOrEqualTo < Binary def predicate_sql; '>=' end end class GreaterThan < Binary def predicate_sql; '>' end end class LessThanOrEqualTo < Binary def predicate_sql; '<=' end end class LessThan < Binary def predicate_sql; '<' end end class Match < Binary def predicate_sql; 'LIKE' end end class In < Binary def predicate_sql; operand2.inclusion_predicate_sql end end end end