public String execute() {
    // ---------------------------------------------------------------------
    // Get group members
    // ---------------------------------------------------------------------

    if (id != null) {
      DataElementGroup group = dataElementService.getDataElementGroup(id);

      groupMembers = new ArrayList<DataElement>(group.getMembers());

      Collections.sort(groupMembers, new IdentifiableObjectNameComparator());
    }

    return SUCCESS;
  }
  @Override
  public String execute() {
    if (dataElementGroupId > 0) {
      DataElementGroup group =
          dataElementService.getDataElementGroup(dataElementGroupId.intValue());

      dataElements = new ArrayList<>(group.getMembers());
    } else {
      dataElements = new ArrayList<>(dataElementService.getAllDataElements());
    }

    Collections.sort(dataElements, new IdentifiableObjectNameComparator());

    for (DataElement dataElement : dataElements) {
      DataElementCategoryCombo categoryCombo = dataElement.getCategoryCombo();

      Set<DataElementCategoryOptionCombo> optionCombos = categoryCombo.getOptionCombos();

      if (optionCombos.size() > 1) {
        for (DataElementCategoryOptionCombo optionCombo : optionCombos) {
          DataElementOperand operand =
              new DataElementOperand(
                  dataElement.getUid(),
                  optionCombo.getUid(),
                  dataElement.getName() + optionCombo.getName());
          operands.add(operand);
        }
      } else {
        DataElementOperand operand =
            new DataElementOperand(
                dataElement.getUid(),
                optionCombos.iterator().next().getUid(),
                dataElement.getName());
        operands.add(operand);
      }
    }

    return SUCCESS;
  }
  @Transactional
  public void matchObject(int importObjectId, int existingObjectId) {
    ImportObject importObject = importObjectStore.getImportObject(importObjectId);

    Object object = importObject.getObject();

    // ---------------------------------------------------------------------
    // Updates the name of the import object to the name of the existing
    // object.
    // ---------------------------------------------------------------------

    if (object.getClass().equals(DataElement.class)) {
      DataElement element = (DataElement) object;

      element.setName(dataElementService.getDataElement(existingObjectId).getName());
    } else if (object.getClass().equals(DataElementGroup.class)) {
      DataElementGroup group = (DataElementGroup) object;

      group.setName(dataElementService.getDataElementGroup(existingObjectId).getName());
    } else if (object.getClass().equals(DataElementGroupSet.class)) {
      DataElementGroupSet groupSet = (DataElementGroupSet) object;

      groupSet.setName(dataElementService.getDataElementGroupSet(existingObjectId).getName());
    } else if (object.getClass().equals(IndicatorType.class)) {
      IndicatorType type = (IndicatorType) object;

      type.setName(indicatorService.getIndicatorType(existingObjectId).getName());
    } else if (object.getClass().equals(Indicator.class)) {
      Indicator indicator = (Indicator) object;

      indicator.setName(indicatorService.getIndicator(existingObjectId).getName());
    } else if (object.getClass().equals(IndicatorGroup.class)) {
      IndicatorGroup group = (IndicatorGroup) object;

      group.setName(indicatorService.getIndicatorGroup(existingObjectId).getName());
    } else if (object.getClass().equals(IndicatorGroupSet.class)) {
      IndicatorGroupSet groupSet = (IndicatorGroupSet) object;

      groupSet.setName(indicatorService.getIndicatorGroupSet(existingObjectId).getName());
    } else if (object.getClass().equals(DataDictionary.class)) {
      DataDictionary dictionary = (DataDictionary) object;

      dictionary.setName(dataDictionaryService.getDataDictionary(existingObjectId).getName());
    } else if (object.getClass().equals(DataSet.class)) {
      DataSet dataSet = (DataSet) object;

      dataSet.setName(dataSetService.getDataSet(existingObjectId).getName());
    } else if (object.getClass().equals(OrganisationUnit.class)) {
      OrganisationUnit unit = (OrganisationUnit) object;

      unit.setName(organisationUnitService.getOrganisationUnit(existingObjectId).getName());
    } else if (object.getClass().equals(OrganisationUnitGroup.class)) {
      OrganisationUnitGroup group = (OrganisationUnitGroup) object;

      group.setName(
          organisationUnitGroupService.getOrganisationUnitGroup(existingObjectId).getName());
    } else if (object.getClass().equals(OrganisationUnitGroupSet.class)) {
      OrganisationUnitGroupSet groupSet = (OrganisationUnitGroupSet) object;

      groupSet.setName(
          organisationUnitGroupService.getOrganisationUnitGroupSet(existingObjectId).getName());
    } else if (object.getClass().equals(OrganisationUnitLevel.class)) {
      OrganisationUnitLevel level = (OrganisationUnitLevel) object;

      level.setName(organisationUnitService.getOrganisationUnitLevel(existingObjectId).getName());
    } else if (object.getClass().equals(ValidationRule.class)) {
      ValidationRule validationRule = (ValidationRule) object;

      validationRule.setName(validationRuleService.getValidationRule(existingObjectId).getName());
    } else if (object.getClass().equals(Report.class)) {
      Report report = (Report) object;

      report.setName(reportService.getReport(existingObjectId).getName());
    } else if (object.getClass().equals(ReportTable.class)) {
      ReportTable reportTable = (ReportTable) object;

      reportTable.setName(reportTableService.getReportTable(existingObjectId).getName());
    } else if (object.getClass().equals(Chart.class)) {
      Chart chart = (Chart) object;

      chart.setName(chartService.getChart(existingObjectId).getName());
    } else if (object.getClass().equals(DataValue.class)) {
      DataValue dataValue = (DataValue) object;

      dataValue =
          updateDataValue(
              dataValue,
              dataValueService.getDataValue(
                  dataValue.getSource(),
                  dataValue.getDataElement(),
                  dataValue.getPeriod(),
                  dataValue.getOptionCombo()));
    }

    // ---------------------------------------------------------------------
    // Sets the status of the import object to match, these objects will
    // later be ignored on import all but is needed for matching of
    // associations.
    // ---------------------------------------------------------------------

    importObject.setStatus(ImportObjectStatus.MATCH);

    importObjectStore.updateImportObject(importObject);
  }