public static JRElement getElementByKey(JRCrosstab crosstab, String key) {
    JRElement element = null;

    if (crosstab.getHeaderCell() != null) {
      element = crosstab.getHeaderCell().getElementByKey(key);
    }

    if (element == null) {
      element = getHeadersElement(crosstab.getRowGroups(), key);
    }

    if (element == null) {
      element = getHeadersElement(crosstab.getColumnGroups(), key);
    }

    if (element == null) {
      if (crosstab instanceof JRDesignCrosstab) {
        List cellsList = ((JRDesignCrosstab) crosstab).getCellsList();
        for (Iterator it = cellsList.iterator(); element == null && it.hasNext(); ) {
          JRCrosstabCell cell = (JRCrosstabCell) it.next();
          element = cell.getContents().getElementByKey(key);
        }
      } else {
        JRCrosstabCell[][] cells = crosstab.getCells();
        for (int i = cells.length - 1; element == null && i >= 0; --i) {
          for (int j = cells[i].length - 1; element == null && j >= 0; --j) {
            JRCrosstabCell cell = cells[i][j];
            if (cell != null) {
              element = cell.getContents().getElementByKey(key);
            }
          }
        }
      }
    }

    if (element == null && crosstab.getWhenNoDataCell() != null) {
      element = crosstab.getWhenNoDataCell().getElementByKey(key);
    }

    return element;
  }
  public JRBaseCrosstab(JRCrosstab crosstab, JRBaseObjectFactory factory, int id) {
    super(crosstab, factory);

    this.id = id;

    this.columnBreakOffset = crosstab.getColumnBreakOffset();
    this.repeatColumnHeaders = crosstab.isRepeatColumnHeaders();
    this.repeatRowHeaders = crosstab.isRepeatRowHeaders();
    this.runDirectionValue = crosstab.getRunDirectionValue();
    this.ignoreWidth = crosstab.getIgnoreWidth();

    this.dataset = factory.getCrosstabDataset(crosstab.getDataset());

    copyParameters(crosstab, factory);
    copyVariables(crosstab, factory);
    headerCell = factory.getCell(crosstab.getHeaderCell());
    copyRowGroups(crosstab, factory);
    copyColumnGroups(crosstab, factory);
    copyMeasures(crosstab, factory);
    copyCells(crosstab, factory);

    whenNoDataCell = factory.getCell(crosstab.getWhenNoDataCell());
  }