module Arel::Predications

Public Instance Methods

between(other) click to toggle source
# File lib/arel/predications.rb, line 27
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
does_not_match(other, escape = nil) click to toggle source
# File lib/arel/predications.rb, line 133
def does_not_match other, escape = nil
  Nodes::DoesNotMatch.new self, quoted_node(other), escape
end
does_not_match_all(others, escape = nil) click to toggle source
# File lib/arel/predications.rb, line 141
def does_not_match_all others, escape = nil
  grouping_all :does_not_match, others, escape
end
does_not_match_any(others, escape = nil) click to toggle source
# File lib/arel/predications.rb, line 137
def does_not_match_any others, escape = nil
  grouping_any :does_not_match, others, escape
end
eq(other) click to toggle source
# File lib/arel/predications.rb, line 15
def eq other
  Nodes::Equality.new self, quoted_node(other)
end
eq_all(others) click to toggle source
# File lib/arel/predications.rb, line 23
def eq_all others
  grouping_all :eq, quoted_array(others)
end
eq_any(others) click to toggle source
# File lib/arel/predications.rb, line 19
def eq_any others
  grouping_any :eq, others
end
gt(right) click to toggle source
# File lib/arel/predications.rb, line 157
def gt right
  Nodes::GreaterThan.new self, quoted_node(right)
end
gt_all(others) click to toggle source
# File lib/arel/predications.rb, line 165
def gt_all others
  grouping_all :gt, others
end
gt_any(others) click to toggle source
# File lib/arel/predications.rb, line 161
def gt_any others
  grouping_any :gt, others
end
gteq(right) click to toggle source
# File lib/arel/predications.rb, line 145
def gteq right
  Nodes::GreaterThanOrEqual.new self, quoted_node(right)
end
gteq_all(others) click to toggle source
# File lib/arel/predications.rb, line 153
def gteq_all others
  grouping_all :gteq, others
end
gteq_any(others) click to toggle source
# File lib/arel/predications.rb, line 149
def gteq_any others
  grouping_any :gteq, others
end
in(other) click to toggle source
# File lib/arel/predications.rb, line 47
    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
in_all(others) click to toggle source
# File lib/arel/predications.rb, line 69
def in_all others
  grouping_all :in, others
end
in_any(others) click to toggle source
# File lib/arel/predications.rb, line 65
def in_any others
  grouping_any :in, others
end
lt(right) click to toggle source
# File lib/arel/predications.rb, line 169
def lt right
  Nodes::LessThan.new self, quoted_node(right)
end
lt_all(others) click to toggle source
# File lib/arel/predications.rb, line 177
def lt_all others
  grouping_all :lt, others
end
lt_any(others) click to toggle source
# File lib/arel/predications.rb, line 173
def lt_any others
  grouping_any :lt, others
end
lteq(right) click to toggle source
# File lib/arel/predications.rb, line 181
def lteq right
  Nodes::LessThanOrEqual.new self, quoted_node(right)
end
lteq_all(others) click to toggle source
# File lib/arel/predications.rb, line 189
def lteq_all others
  grouping_all :lteq, others
end
lteq_any(others) click to toggle source
# File lib/arel/predications.rb, line 185
def lteq_any others
  grouping_any :lteq, others
end
matches(other, escape = nil) click to toggle source
# File lib/arel/predications.rb, line 121
def matches other, escape = nil
  Nodes::Matches.new self, quoted_node(other), escape
end
matches_all(others, escape = nil) click to toggle source
# File lib/arel/predications.rb, line 129
def matches_all others, escape = nil
  grouping_all :matches, others, escape
end
matches_any(others, escape = nil) click to toggle source
# File lib/arel/predications.rb, line 125
def matches_any others, escape = nil
  grouping_any :matches, others, escape
end
not_between(other) click to toggle source
# File lib/arel/predications.rb, line 73
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
not_eq(other) click to toggle source
# File lib/arel/predications.rb, line 3
def not_eq other
  Nodes::NotEqual.new self, quoted_node(other)
end
not_eq_all(others) click to toggle source
# File lib/arel/predications.rb, line 11
def not_eq_all others
  grouping_all :not_eq, others
end
not_eq_any(others) click to toggle source
# File lib/arel/predications.rb, line 7
def not_eq_any others
  grouping_any :not_eq, others
end
not_in(other) click to toggle source
# File lib/arel/predications.rb, line 95
    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
not_in_all(others) click to toggle source
# File lib/arel/predications.rb, line 117
def not_in_all others
  grouping_all :not_in, others
end
not_in_any(others) click to toggle source
# File lib/arel/predications.rb, line 113
def not_in_any others
  grouping_any :not_in, others
end

Private Instance Methods

grouping_all(method_id, others, *extras) click to toggle source
# File lib/arel/predications.rb, line 202
def grouping_all method_id, others, *extras
  nodes = others.map {|expr| send(method_id, expr, *extras)}
  Nodes::Grouping.new Nodes::And.new(nodes)
end
grouping_any(method_id, others, *extras) click to toggle source
# File lib/arel/predications.rb, line 195
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
quoted_array(others) click to toggle source
# File lib/arel/predications.rb, line 211
def quoted_array(others)
  others.map { |v| quoted_node(v) }
end
quoted_node(other) click to toggle source
# File lib/arel/predications.rb, line 207
def quoted_node(other)
  Nodes.build_quoted(other, self)
end