public Reader getNCharacterStream(int columnIndex) throws SQLException {
       throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("jdbcrowsetimpl.featnotsupp").toString());
     }
Retrieves the value of the designated column in the current row
of this <code>ResultSet</code> object as a
<code>java.io.Reader</code> object.
It is intended for use when
accessing  <code>NCHAR</code>,<code>NVARCHAR</code>
and <code>LONGNVARCHAR</code> columns.

@return a <code>java.io.Reader</code> object that contains the column
value; if the value is SQL <code>NULL</code>, the value returned is
<code>null</code> in the Java programming language.
@param columnIndex the first column is 1, the second is 2, ...
@exception SQLException if a database access error occurs
@since 1.6
src/main/java/org/replicadb/rowset/sun/rowset/JdbcRowSetImpl.java