public void updateClob(int columnIndex,  Reader reader) throws SQLException {
        throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
    }
Updates the designated column using the given <code>Reader</code>
object.
When a very large UNICODE value is input to a <code>LONGVARCHAR</code>
parameter, it may be more practical to send it via a
<code>java.io.Reader</code> object. The data will be read from the stream
as needed until end-of-file is reached.  The JDBC driver will
do any necessary conversion from UNICODE to the database char format.

<P><B>Note:</B> This stream object can either be a standard
Java stream object or your own subclass that implements the
standard interface.
  <P><B>Note:</B> Consult your JDBC driver documentation to determine if
it might be more efficient to use a version of
<code>updateClob</code> which takes a length parameter.
<p>
The updater methods are used to update column values in the
current row or the insert row.  The updater methods do not
update the underlying database; instead the <code>updateRow</code> or
<code>insertRow</code> methods are called to update the database.

@param columnIndex the first column is 1, the second is 2, ...
@param reader An object that contains the data to set the parameter value to.
@exception SQLException if a database access error occurs,
the result set concurrency is <code>CONCUR_READ_ONLY</code>
or this method is called on a closed result set
@exception SQLFeatureNotSupportedException if the JDBC driver does not support
this method
@since 1.6
src/main/java/org/replicadb/rowset/sun/rowset/CachedRowSetImpl.java