public AuditExportResult sendAuditMessages(final AuditMessageFilter filter) {
            AuditExportResult result = null;
            JdbcTemplate jdbcTemplate = new JdbcTemplate(getDS());
            AuditRowHandler auditRowHandler = new AuditRowHandler();
            long start = System.currentTimeMillis();
            jdbcTemplate.query(new PreparedStatementCreator() {
                  public PreparedStatement createPreparedStatement(Connection conn) throws SQLException {
                        String sql = filter.setFilter(SELECT_EXPORT_AUDIT_MESSAGES, defaultCol, cols);
                        PreparedStatement pst = conn.prepareStatement(sql, ResultSet.TYPE_SCROLL_INSENSITIVE,
                                   ResultSet.CONCUR_READ_ONLY);
                        filter.setPreparedStatement(pst);
                        return pst;
                  }
            }, auditRowHandler);
            log.trace("Transfer to Excel time(ms): {} ", String.valueOf(System.currentTimeMillis() - start));
            if (null != auditRowHandler.getBook() && null != auditRowHandler.getIds()) {
                  result = new AuditExportResult();
                  result.setBook(auditRowHandler.getBook());
                  result.setIds(auditRowHandler.getIds());
            }
            return result;
      }

public class AuditRowHandler implements RowCallbackHandler {
      
      private List ids;
      private HSSFWorkbook book;
      
      public AuditRowHandler() {
      }

      public void processRow(ResultSet rs) throws SQLException {