public void setNull (String parameterName, int sqlType, String typeName)
       throws SQLException{
      throw new SQLFeatureNotSupportedException(resBundle.handleGetObject("cachedrowsetimpl.featnotsupp").toString());
   }
Sets the designated parameter to SQL <code>NULL</code>.
This version of the method <code>setNull</code> should
be used for user-defined types and REF type parameters.  Examples
of user-defined types include: STRUCT, DISTINCT, JAVA_OBJECT, and
named array types.

<P><B>Note:</B> To be portable, applications must give the
SQL type code and the fully-qualified SQL type name when specifying
a NULL user-defined or REF parameter.  In the case of a user-defined type
the name is the type name of the parameter itself.  For a REF
parameter, the name is the type name of the referenced type.  If
a JDBC driver does not need the type code or type name information,
it may ignore it.

Although it is intended for user-defined and Ref parameters,
this method may be used to set a null parameter of any JDBC type.
If the parameter does not have a user-defined or REF type, the given
typeName is ignored.


@param parameterName the name of the parameter
@param sqlType a value from <code>java.sql.Types</code>
@param typeName the fully-qualified name of an SQL user-defined type;
       ignored if the parameter is not a user-defined type or
       SQL <code>REF</code> value
@exception SQLException if a database access error occurs or
this method is called on a closed <code>CallableStatement</code>
@exception SQLFeatureNotSupportedException if the JDBC driver does not support
this method
@since 1.4
src/main/java/org/replicadb/rowset/StreamingRowSetImpl.java