Bug 211703 Support muti-view on report item.
As title described.
xtab/org.eclipse.birt.report.item.crosstab.core/src/org/eclipse/birt/report/item/crosstab/core/de/CrosstabReportItemHandle.java
*            the position index of the move target
	 * @throws SemanticException
	 */
	public void pivotDimension( int srcAxisType, int srcIndex,
			int targetAxisType, int targetIndex ) throws SemanticException
	{
		new CrosstabReportItemTask( this ).pivotDimension( srcAxisType,
				srcIndex, targetAxisType, targetIndex );
	}
	/**
	 * Gets the row/column grand total cell of this crosstab. The axis type can
	 * be either <code>ICrosstabConstants.ROW_AXIS_TYPE</code> or
	 * <code>ICrosstabConstants.COLUMN_AXIS_TYPE</code>.
	 * 
	 * @param axisType
	 *            row/column axis type
	 * @return row/column grand total cell if set, otherwise null
	 */
	public CrosstabCellHandle getGrandTotal( int axisType )
	{
		CrosstabViewHandle crosstabView = getCrosstabView( axisType );
		return crosstabView == null ? null : crosstabView.getGrandTotal( );
	}
	/**
	 * Adds a row/column grand total to the crosstab if it is empty. The axis
	 * type can be either <code>ICrosstabConstants.ROW_AXIS_TYPE</code> or
	 * <code>ICrosstabConstants.COLUMN_AXIS_TYPE</code>.
	 * 
	 * @param axisType
	 *            row/column axis type