public final Response executeCommand(
      Object inputPar,
      UserSessionParameters userSessionPars,
      HttpServletRequest request,
      HttpServletResponse response,
      HttpSession userSession,
      ServletContext context) {
    try {
      DetailSaleDocRowVO rowVO = (DetailSaleDocRowVO) inputPar;
      VariantDescriptionsVO vo =
          (VariantDescriptionsVO)
              ((JAIOUserSessionParameters) userSessionPars)
                  .getVariantDescriptionsVO()
                  .get(rowVO.getCompanyCodeSys01DOC02());
      InsertSaleItem bean =
          (InsertSaleItem) JAIOBeanFactory.getInstance().getBean(InsertSaleItem.class);
      Response answer =
          bean.insertSaleItem(
              vo.getVariant1Descriptions(),
              vo.getVariant2Descriptions(),
              vo.getVariant3Descriptions(),
              vo.getVariant4Descriptions(),
              vo.getVariant5Descriptions(),
              rowVO,
              ((JAIOUserSessionParameters) userSessionPars).getServerLanguageId(),
              userSessionPars.getUsername());

      return answer;
    } catch (Throwable ex) {
      Logger.error(
          userSessionPars.getUsername(),
          this.getClass().getName(),
          "executeCommand",
          "Error while processing request",
          ex);
      return new ErrorResponse(ex.getMessage());
    }
  }
  /** Business logic to execute. */
  public VOListResponse loadOutDeliveryNotesForSaleDoc(
      GridParams pars, String serverLanguageId, String username, ArrayList companiesList)
      throws Throwable {
    PreparedStatement pstmt = null;
    Connection conn = null;
    try {
      if (this.conn == null) conn = getConn();
      else conn = this.conn;

      // retrieve companies list...
      String companies = "";
      for (int i = 0; i < companiesList.size(); i++)
        companies += "'" + companiesList.get(i).toString() + "',";
      companies = companies.substring(0, companies.length() - 1);

      String sql =
          "select DOC08_DELIVERY_NOTES.COMPANY_CODE_SYS01,DOC08_DELIVERY_NOTES.DOC_TYPE,"
              + "DOC08_DELIVERY_NOTES.DOC_YEAR,DOC08_DELIVERY_NOTES.DOC_NUMBER,DOC08_DELIVERY_NOTES.DOC_DATE, "
              + "DOC08_DELIVERY_NOTES.DESTINATION_CODE_REG18,DOC08_DELIVERY_NOTES.DESCRIPTION,"
              + "DOC08_DELIVERY_NOTES.DOC_SEQUENCE "
              + " from DOC08_DELIVERY_NOTES where "
              + "DOC08_DELIVERY_NOTES.COMPANY_CODE_SYS01 in ("
              + companies
              + ") and "
              + "DOC08_DELIVERY_NOTES.ENABLED='Y' and "
              + "DOC08_DELIVERY_NOTES.DOC_TYPE=? and "
              + "DOC08_DELIVERY_NOTES.DOC_STATE=? and "
              + "(DOC08_DELIVERY_NOTES.COMPANY_CODE_SYS01,DOC08_DELIVERY_NOTES.DOC_TYPE,DOC08_DELIVERY_NOTES.DOC_YEAR,DOC08_DELIVERY_NOTES.DOC_NUMBER) "
              + " in (select DOC10_OUT_DELIVERY_NOTE_ITEMS.COMPANY_CODE_SYS01,DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_TYPE,DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_YEAR,DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_NUMBER "
              + " from DOC10_OUT_DELIVERY_NOTE_ITEMS where "
              + " DOC10_OUT_DELIVERY_NOTE_ITEMS.COMPANY_CODE_SYS01=? and "
              + " DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_TYPE_DOC01=? and "
              + " DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_YEAR_DOC01=? and "
              + " DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_NUMBER_DOC01=? ";

      DetailSaleDocVO docVO =
          (DetailSaleDocVO)
              pars.getOtherGridParams().get(ApplicationConsts.SALE_DOC_VO); // invoice document...
      if (docVO.getDocNumberDOC01() == null)
        sql +=
            " and DOC10_OUT_DELIVERY_NOTE_ITEMS.QTY-DOC10_OUT_DELIVERY_NOTE_ITEMS.INVOICE_QTY>0)";
      else sql += ")";

      Map attribute2dbField = new HashMap();
      attribute2dbField.put("companyCodeSys01DOC08", "DOC08_DELIVERY_NOTES.COMPANY_CODE_SYS01");
      attribute2dbField.put("docTypeDOC08", "DOC08_DELIVERY_NOTES.DOC_TYPE");
      attribute2dbField.put("docYearDOC08", "DOC08_DELIVERY_NOTES.DOC_YEAR");
      attribute2dbField.put("docNumberDOC08", "DOC08_DELIVERY_NOTES.DOC_NUMBER");
      attribute2dbField.put("docDateDOC08", "DOC08_DELIVERY_NOTES.DOC_DATE");
      attribute2dbField.put(
          "destinationCodeReg18DOC08", "DOC08_DELIVERY_NOTES.DESTINATION_CODE_REG18");
      attribute2dbField.put("descriptionDOC08", "DOC08_DELIVERY_NOTES.DESCRIPTION");
      attribute2dbField.put("docSequenceDOC08", "DOC08_DELIVERY_NOTES.DOC_SEQUENCE");

      ArrayList values = new ArrayList();
      values.add(ApplicationConsts.OUT_DELIVERY_NOTE_DOC_TYPE);
      values.add(ApplicationConsts.CLOSED);
      values.add(docVO.getCompanyCodeSys01DOC01());
      values.add(docVO.getDocTypeDoc01DOC01());
      values.add(docVO.getDocYearDoc01DOC01());
      values.add(docVO.getDocNumberDoc01DOC01());

      // read from DOC08 table...
      Response res =
          QueryUtil.getQuery(
              conn,
              new UserSessionParameters(username),
              sql,
              values,
              attribute2dbField,
              OutDeliveryNotesVO.class,
              "Y",
              "N",
              null,
              pars,
              true);

      if (res.isError()) throw new Exception(res.getErrorMessage());

      // check if the invoice document has been already created and there exists delivery notes
      // linked to it...
      if (docVO.getDocNumberDOC01() != null) {
        pstmt =
            conn.prepareStatement(
                "select DOC08_DELIVERY_NOTES.DOC_NUMBER from DOC08_DELIVERY_NOTES where "
                    + "DOC08_DELIVERY_NOTES.COMPANY_CODE_SYS01 in ("
                    + companies
                    + ") and "
                    + "DOC08_DELIVERY_NOTES.ENABLED='Y' and "
                    + "DOC08_DELIVERY_NOTES.DOC_TYPE=? and "
                    + "DOC08_DELIVERY_NOTES.DOC_STATE=? and "
                    + "(DOC08_DELIVERY_NOTES.COMPANY_CODE_SYS01,DOC08_DELIVERY_NOTES.DOC_TYPE,DOC08_DELIVERY_NOTES.DOC_YEAR,DOC08_DELIVERY_NOTES.DOC_NUMBER) "
                    + " in (select DOC10_OUT_DELIVERY_NOTE_ITEMS.COMPANY_CODE_SYS01,DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_TYPE,DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_YEAR,DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_NUMBER "
                    + " from DOC10_OUT_DELIVERY_NOTE_ITEMS,DOC02_SELLING_ITEMS where "
                    + " DOC10_OUT_DELIVERY_NOTE_ITEMS.COMPANY_CODE_SYS01=? and "
                    + " DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_TYPE_DOC01=? and "
                    + " DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_YEAR_DOC01=? and "
                    + " DOC10_OUT_DELIVERY_NOTE_ITEMS.DOC_NUMBER_DOC01=? and "
                    + " DOC10_OUT_DELIVERY_NOTE_ITEMS.COMPANY_CODE_SYS01=DOC02_SELLING_ITEMS.COMPANY_CODE_SYS01 and "
                    + " DOC02_SELLING_ITEMS.DOC_TYPE=? and "
                    + " DOC02_SELLING_ITEMS.DOC_YEAR=? and "
                    + " DOC02_SELLING_ITEMS.DOC_NUMBER=? and "
                    + " DOC10_OUT_DELIVERY_NOTE_ITEMS.ITEM_CODE_ITM01=DOC02_SELLING_ITEMS.ITEM_CODE_ITM01)");

        pstmt.setString(1, ApplicationConsts.OUT_DELIVERY_NOTE_DOC_TYPE);
        pstmt.setString(2, ApplicationConsts.CLOSED);
        pstmt.setString(3, docVO.getCompanyCodeSys01DOC01());
        pstmt.setString(4, docVO.getDocTypeDoc01DOC01());
        pstmt.setBigDecimal(5, docVO.getDocYearDoc01DOC01());
        pstmt.setBigDecimal(6, docVO.getDocNumberDoc01DOC01());
        pstmt.setString(7, docVO.getDocTypeDOC01());
        pstmt.setBigDecimal(8, docVO.getDocYearDOC01());
        pstmt.setBigDecimal(9, docVO.getDocNumberDOC01());

        HashSet docNumberDOC08s = new HashSet();
        ResultSet rset = pstmt.executeQuery();
        while (rset.next()) docNumberDOC08s.add(rset.getBigDecimal(1));
        rset.close();

        java.util.List rows = ((VOListResponse) res).getRows();
        OutDeliveryNotesVO vo = null;
        for (int i = 0; i < rows.size(); i++) {
          vo = (OutDeliveryNotesVO) rows.get(i);
          if (docNumberDOC08s.contains(vo.getDocNumberDOC08())) vo.setSelected(Boolean.TRUE);
        }
      }

      Response answer = res;
      if (answer.isError()) throw new Exception(answer.getErrorMessage());
      else return (VOListResponse) answer;
    } catch (Throwable ex) {
      Logger.error(
          username,
          this.getClass().getName(),
          "executeCommand",
          "Error while fetching out delivery notes list, related to the specified sale document",
          ex);
      throw new Exception(ex.getMessage());
    } finally {
      try {
        pstmt.close();
      } catch (Exception exx) {
      }
      try {
        if (this.conn == null && conn != null) {
          // close only local connection
          conn.commit();
          conn.close();
        }

      } catch (Exception exx) {
      }
    }
  }