    # File lib/active_record/associations.rb, line 1259
              def initialize(base, associations, joins)
                @joins                 = [JoinBase.new(base, joins)]
                @associations          = associations
                @reflections           = []
                @base_records_hash     = {}
                @base_records_in_order = []
                @table_aliases         = Hash.new { |aliases, table| aliases[table] = 0 }
                @table_aliases[base.table_name] = 1
                build(associations)
              end