src/org/tiefaces/components/websheet/dataobjects/CachedCells.java
public final void put(final Cell cell, final CellType formula) {
		Map<Cell, FormulaMapping> map = cachedMap;
		// if cellType not null then only specified Type will be put into Cache
		// e.g. only formula cell will be cached then pass in
		// Cell.CELL_TYPE_FORMULA
		if ((cell != null) && ((formula == null)
				|| (cell.getCellTypeEnum() == formula))) {
			String value = CellUtility.getCellValueWithFormat(cell,
					parent.getFormulaEvaluator(),
					parent.getDataFormatter());
			FormulaMapping f = map.get(cell);
			if (f == null) {
				f = new FormulaMapping();
			}
			f.setValue(value);
			map.put(cell, f);
		}
	}
public final void put(final Cell cell, final CellType formula) {
		Map<Cell, FormulaMapping> map = cachedMap;
		// if cellType not null then only specified Type will be put into Cache
		// e.g. only formula cell will be cached then pass in
		// Cell.CELL_TYPE_FORMULA
		if ((cell != null) && ((formula == null)
				|| (cell.getCellTypeEnum() == formula))) {
			String value = CellUtility.getCellValueWithFormat(cell,
					parent.getFormulaEvaluator(),
					parent.getDataFormatter());
			FormulaMapping f = map.get(cell);
			if (f == null) {
				f = new FormulaMapping();
			}
			f.setValue(value);
			map.put(cell, f);
		}
	}
Put.

@param cell
the cell
@param formula
the cell type