# File lib/dm-migrations/adapters/dm-do-adapter.rb, line 262
        def type_map
          length    = Property::String::DEFAULT_LENGTH
          precision = Property::Numeric::DEFAULT_PRECISION
          scale     = Property::Decimal::DEFAULT_SCALE

          @type_map ||= {
            Property::Binary => { :primitive => 'BLOB'                                              },
            Object           => { :primitive => 'TEXT'                                              },
            Integer          => { :primitive => 'INTEGER'                                           },
            String           => { :primitive => 'VARCHAR', :length => length                        },
            Class            => { :primitive => 'VARCHAR', :length => length                        },
            BigDecimal       => { :primitive => 'DECIMAL', :precision => precision, :scale => scale },
            Float            => { :primitive => 'FLOAT',   :precision => precision                  },
            DateTime         => { :primitive => 'TIMESTAMP'                                         },
            Date             => { :primitive => 'DATE'                                              },
            Time             => { :primitive => 'TIMESTAMP'                                         },
            TrueClass        => { :primitive => 'BOOLEAN'                                           },
            Property::Text   => { :primitive => 'TEXT'                                              },
          }.freeze
        end