Bug 210507 Enhance Report engine to support multiple view
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/parser/EngineIRVisitor.java
* data item's needRefreshMapping while it is in a extended item.
	 */
	int extendedItemNestingCount = 0;
	
	/**
	 * constructor
	 * 
	 * @param handle
	 *            the entry point to the DE report design IR
	 * 
	 */
	public EngineIRVisitor( ReportDesignHandle handle )
	{
		super( );
		this.handle = handle;
	}
	/**
	 * translate the DE's IR to FPE's IR.
	 * 
	 * @return FPE's IR.
	 */
	public Report translate( )
	{
		report = new Report( );
		cssEngine = report.getCSSEngine( );
		report.setReportDesign( handle );
		apply( handle );
		return report;
	}