Method: NoBrainer::Criteria::Where::IndexFinder#find_strategy_hidden_between

Defined in:

lib/no_brainer/criteria/where.rb

#find_strategy_hidden_between ⇒ Object

# File 'lib/no_brainer/criteria/where.rb', line 484

def find_strategy_hidden_between
  clauses = get_candidate_clauses(:gt, :ge, :lt, :le).group_by(&:key_path)
  return nil unless clauses.present?

  get_usable_indexes(:geo => false).each do |index|
    matched_clauses = clauses[[index.name]].try(:select) { |c| c.compatible_with_index?(index) }
    next unless matched_clauses.present?

    op_clauses = Hash[matched_clauses.map { |c| [c.op, c] }]
    left_bound  = op_clauses[:gt] || op_clauses[:ge]
    right_bound = op_clauses[:lt] || op_clauses[:le]

    # XXX we must keep only one bound when using `any', otherwise we get different semantics.
    right_bound = nil if index.multi && left_bound && right_bound

    options = {}
    options[:left_bound]  = {:gt => :open, :ge => :closed}[left_bound.op]  if left_bound
    options[:right_bound] = {:lt => :open, :le => :closed}[right_bound.op] if right_bound

    return IndexStrategy.new(self, ast, [left_bound, right_bound].compact, index, :between,
                             [left_bound  ? left_bound.try(:value)  : RethinkDB::RQL.new.minval,
                              right_bound ? right_bound.try(:value) : RethinkDB::RQL.new.maxval], options)
  end
  return nil
end