module Arel module Predications def not_eq other Nodes::NotEqual.new self, quoted_node(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, quoted_node(other) end def eq_any others grouping_any :eq, others end def eq_all others grouping_all :eq, quoted_array(others) end def between other if other.begin == -Float::INFINITY if other.end == Float::INFINITY not_in([]) elsif other.exclude_end? lt(other.end) else lteq(other.end) end elsif other.end == Float::INFINITY gteq(other.begin) elsif other.exclude_end? gteq(other.begin).and(lt(other.end)) else left = quoted_node(other.begin) right = quoted_node(other.end) Nodes::Between.new(self, left.and(right)) end end def in other case other when Arel::SelectManager Arel::Nodes::In.new(self, other.ast) when Range if $VERBOSE warn <<-eowarn Passing a range to `#in` is deprecated. Call `#between`, instead. eowarn end between(other) when Enumerable Nodes::In.new self, quoted_array(other) else Nodes::In.new self, quoted_node(other) end end def in_any others grouping_any :in, others end def in_all others grouping_all :in, others end def not_between other if other.begin == -Float::INFINITY # The range begins with negative infinity if other.end == Float::INFINITY self.in([]) elsif other.exclude_end? gteq(other.end) else gt(other.end) end elsif other.end == Float::INFINITY lt(other.begin) else left = lt(other.begin) right = if other.exclude_end? gteq(other.end) else gt(other.end) end left.or(right) end end def not_in other case other when Arel::SelectManager Arel::Nodes::NotIn.new(self, other.ast) when Range if $VERBOSE warn <<-eowarn Passing a range to `#not_in` is deprecated. Call `#not_between`, instead. eowarn end not_between(other) when Enumerable Nodes::NotIn.new self, quoted_array(other) else Nodes::NotIn.new self, quoted_node(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, escape = nil Nodes::Matches.new self, quoted_node(other), escape end def matches_any others, escape = nil grouping_any :matches, others, escape end def matches_all others, escape = nil grouping_all :matches, others, escape end def does_not_match other, escape = nil Nodes::DoesNotMatch.new self, quoted_node(other), escape end def does_not_match_any others, escape = nil grouping_any :does_not_match, others, escape end def does_not_match_all others, escape = nil grouping_all :does_not_match, others, escape end def gteq right Nodes::GreaterThanOrEqual.new self, quoted_node(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, quoted_node(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, quoted_node(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, quoted_node(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, *extras nodes = others.map {|expr| send(method_id, expr, *extras)} Nodes::Grouping.new nodes.inject { |memo,node| Nodes::Or.new(memo, node) } end def grouping_all method_id, others, *extras nodes = others.map {|expr| send(method_id, expr, *extras)} Nodes::Grouping.new Nodes::And.new(nodes) end def quoted_node(other) Nodes.build_quoted(other, self) end def quoted_array(others) others.map { |v| quoted_node(v) } end end end