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/internal/CrosstabReportItemTask.java
* be either <code>ICrosstabConstants.ROW_AXIS_TYPE</code> or
	 * <code>ICrosstabConstants.COLUMN_AXIS_TYPE</code>. And index is 0-based
	 * integer.
	 * 
	 * @param dimensionHandle
	 *            the OLAP dimension handle to use
	 * @param axisType
	 *            row/column axis type
	 * @param index
	 *            insert position, a 0-based integer
	 * @return
	 * @throws SemanticException
	 */
	public DimensionViewHandle insertDimension(
			DimensionHandle dimensionHandle, int axisType, int index )
			throws SemanticException
	{
		
		
		if ( dimensionHandle != null
				&& crosstab.getDimension( dimensionHandle.getQualifiedName( ) ) != null )
		{
			crosstab.getLogger( ).log( Level.SEVERE,
					MessageConstants.CROSSTAB_EXCEPTION_DUPLICATE_DIMENSION,
					dimensionHandle.getQualifiedName( ) );
			throw new CrosstabException( crosstab.getModelHandle( )
					.getElement( ), new String[]{
					dimensionHandle.getQualifiedName( ),
					crosstab.getModelHandle( ).getElement( ).getIdentifier( )},
					MessageConstants.CROSSTAB_EXCEPTION_DUPLICATE_DIMENSION );