NotesSQL TEXT data type

Can somebody help on NotesSQL ODBC driver that I am using in a Java app through JDBC-ODBC bridge.

The doc says that TEXT field is mapped to SQL_CHAR, SQL_VARCHAR and SQL_LONGVARCHAR. How do I determine which TEXT field is really CHAR, VARCHAR or LONGVARCHAR as I always get precision as 254 for all TEXT fields even though some of them are long varchar.

You help is appreciated.

Thanks