is used for the custom mapping of SQL 使用者-defined types.
This interface must be 器具／実施するd by a service that is
登録（する）d in a type mapping. It is 推定する／予想するd that this interface
will 普通は be 器具／実施するd by a 道具. The methods in this interface
are called by the driver and are never called by a programmer
直接／まっすぐに.
居住させるs this 反対する with data read from the database.
The 実施 of the method must follow this 議定書:
It must read each of the せいにするs or elements of the SQL
type from the given input stream. This is done
by calling a method of the input stream to read each
item, in the order that they appear in the SQL 鮮明度／定義
of the type. The method
readSQL
then 割り当てるs the data to appropriate fields or elements (of this
or other 反対するs).
特に, it must call the appropriate
XSQLInput.readXXX
method(s) to do the に引き続いて:
for a 際立った Type, read its 選び出す／独身 data element;
for a Structured Type, read a value for each せいにする of the SQL type.
The SDBC driver initializes the input stream with a type 地図／計画する
before calling this method, which is used by the appropriate
SQLInput.readXXX
method on the stream.
The 実施 of the method must follow this 議定書:
It must 令状 each of the せいにするs of the SQL type to the given 生産（高）
stream. This is done by calling a method of the 生産（高） stream to 令状
each item, in the order that they appear in the SQL 鮮明度／定義 of the type.
特に, it must call the appropriate
XSQLOutput.writeXXX
method(s) to do the に引き続いて:
for a 際立った Type, 令状 its 選び出す／独身 data element;
for a Structured Type, 令状 a value for each せいにする of the SQL type.
