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
stack.rollback( );
			throw e;
		}
		stack.commit( );
	}
	/**
	 * Sets the page layout of this crosstab. The given value is defined in
	 * <code>ICrosstabConstants</code> and can be one of:
	 * 
	 * <ul>
	 * <li><code>PAGE_LAYOUT_DOWN_THEN_OVER</code>
	 * <li><code>PAGE_LAYOUT_OVER_THEN_DOWN</code>
	 * 
	 * </ul>
	 */
	public void setPageLayout( String value ) throws SemanticException
	{
		handle.setProperty( PAGE_LAYOUT_PROP, value );
	}
	/**
	 * Sets if repeat crosstab row header for each page. The row header is
	 * normally on left of the detail area.
	 */
	public void setRepeatRowHeader( boolean value ) throws SemanticException
	{
		handle.setProperty( REPEAT_ROW_HEADER_PROP, Boolean.valueOf( value ) );
	}
	/**
	 * Sets if repeat crosstab column header for each page. The column header is
	 * normally on top of the detail area.