module Polyamorous::JoinDependencyExtensions

def join_constraints(joins_to_add, alias_tracker, references)
  @alias_tracker = alias_tracker
  @joined_tables = {}
  @references = {}
  references.each do |table_name|
    @references[table_name.to_sym] = table_name if table_name.is_a?(String)
  end
  joins = make_join_constraints(join_root, join_type)
  joins.concat joins_to_add.flat_map { |oj|
    if join_root.match?(oj.join_root) && join_root.table.name == oj.join_root.table.name
      walk join_root, oj.join_root, oj.join_type
    else
      make_join_constraints(oj.join_root, oj.join_type)
    end
  }
end