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
public String getMeasureDirection( )
	{
		return handle.getStringProperty( MEASURE_DIRECTION_PROP );
	}
	/**
	 * Sets the measure direction of this crosstab. The input direction must be
	 * one of:
	 * 
	 * <ul>
	 * <li><code>MEASURE_DIRECTION_HORIZONTAL</code>
	 * <li><code>MEASURE_DIRECTION_VERTICAL</code>
	 * 
	 * @param direction
	 *            measure direction to set, must be one of above choices
	 * @throws SemanticException
	 */
	public void setMeasureDirection( String direction )
			throws SemanticException
	{
		CommandStack stack = getCommandStack( );
		stack
				.startTrans( Messages
						.getString( "CrosstabReportItemHandle.msg.change.measure.direction" ) ); 
		try
		{
			handle.setStringProperty( MEASURE_DIRECTION_PROP, direction );
			new CrosstabReportItemTask( this ).validateCrosstab( );
		}
		catch ( SemanticException e )
		{