*/
public static Object findByPrimaryKey(Connection con, PrimaryKey key) throws SQLException {
PreparedStatement pStmt = null;
ResultSet rs = null;
SortrowBean valueObject = null;
SortrowKey primaryKey = (SortrowKey) key;
try{
pStmt = con.prepareStatement(SortrowBeanBase.SELECT_STATEMENT);
pStmt.setObject(1, primaryKey.getUserid());
pStmt.setObject(2, primaryKey.getListname());
pStmt.setObject(3, primaryKey.getRowvalue());
rs = pStmt.executeQuery();
while (rs.next()){
valueObject = populate(rs);
valueObject.afterPopulate(con);
}