module Arel module Predications def not_eq other Nodes::NotEqual.new self, other end def not_eq_any others grouping_any :not_eq, others end def not_eq_all others grouping_all :not_eq, others end def eq other Nodes::Equality.new self, other end def eq_any others grouping_any :eq, others end def eq_all others grouping_all :eq, others end def in other case other when Arel::SelectManager Arel::Nodes::In.new(self, other.ast) when Range if other.begin == -Float::INFINITY && other.end == Float::INFINITY Nodes::NotIn.new self, [] elsif other.end == Float::INFINITY Nodes::GreaterThanOrEqual.new(self, other.begin) elsif other.begin == -Float::INFINITY && other.exclude_end? Nodes::LessThan.new(self, other.end) elsif other.begin == -Float::INFINITY Nodes::LessThanOrEqual.new(self, other.end) elsif other.exclude_end? left = Nodes::GreaterThanOrEqual.new(self, other.begin) right = Nodes::LessThan.new(self, other.end) Nodes::And.new [left, right] else Nodes::Between.new(self, Nodes::And.new([other.begin, other.end])) end else Nodes::In.new self, other end end def in_any others grouping_any :in, others end def in_all others grouping_all :in, others end def not_in other case other when Arel::SelectManager Arel::Nodes::NotIn.new(self, other.ast) when Range if other.begin == -Float::INFINITY && other.end == Float::INFINITY Nodes::In.new self, [] elsif other.end == Float::INFINITY Nodes::LessThan.new(self, other.begin) elsif other.begin == -Float::INFINITY && other.exclude_end? Nodes::GreaterThanOrEqual.new(self, other.end) elsif other.begin == -Float::INFINITY Nodes::GreaterThan.new(self, other.end) elsif other.exclude_end? left = Nodes::LessThan.new(self, other.begin) right = Nodes::GreaterThanOrEqual.new(self, other.end) Nodes::Or.new left, right else left = Nodes::LessThan.new(self, other.begin) right = Nodes::GreaterThan.new(self, other.end) Nodes::Or.new left, right end else Nodes::NotIn.new self, other end end def not_in_any others grouping_any :not_in, others end def not_in_all others grouping_all :not_in, others end def matches other Nodes::Matches.new self, other end def matches_any others grouping_any :matches, others end def matches_all others grouping_all :matches, others end def does_not_match other Nodes::DoesNotMatch.new self, other end def does_not_match_any others grouping_any :does_not_match, others end def does_not_match_all others grouping_all :does_not_match, others end def gteq right Nodes::GreaterThanOrEqual.new self, right end def gteq_any others grouping_any :gteq, others end def gteq_all others grouping_all :gteq, others end def gt right Nodes::GreaterThan.new self, right end def gt_any others grouping_any :gt, others end def gt_all others grouping_all :gt, others end def lt right Nodes::LessThan.new self, right end def lt_any others grouping_any :lt, others end def lt_all others grouping_all :lt, others end def lteq right Nodes::LessThanOrEqual.new self, right end def lteq_any others grouping_any :lteq, others end def lteq_all others grouping_all :lteq, others end private def grouping_any method_id, others nodes = others.map {|expr| send(method_id, expr)} Nodes::Grouping.new nodes.inject { |memo,node| Nodes::Or.new(memo, node) } end def grouping_all method_id, others Nodes::Grouping.new Nodes::And.new(others.map {|expr| send(method_id, expr)}) end end end