Bug 137444 Can not preview the old file with PDF
Details: Can not preview the old file with PDF Please run the attached file with PDF, it can not preview. But HTML and web view is no problem.
engine/org.eclipse.birt.report.engine.emitter.pdf/src/org/eclipse/birt/report/engine/emitter/pdf/PDFEmitter.java
int areaY = curPos.y + area.getY();
			IHyperlinkAction hlAction = content.getHyperlinkAction();
			if ( null != hlAction )
			try
			{
				switch (hlAction.getType())
				{
				case IHyperlinkAction.ACTION_BOOKMARK: 
					writer.addAnnotation( new PdfAnnotation( writer,
							layoutPointX2PDF(areaX),
							layoutPointY2PDF(areaY+area.getHeight()),
							layoutPointX2PDF(areaX+area.getWidth()),
							layoutPointY2PDF(areaY),
							createPdfAction(
									hlAction.getHyperlink(), 
									hlAction.getBookmark(), 
									hlAction.getTargetWindow(), IHyperlinkAction.ACTION_BOOKMARK)) );
					break;
					
				case IHyperlinkAction.ACTION_DRILLTHROUGH: 
					String baseURL = null;
					
					if(context!=null)
					{
						baseURL = context.getBaseURL();
					}
					StringBuffer link = new StringBuffer( );
					String reportName = hlAction.getReportName( );
					if ( reportName != null && !reportName.equals( "" ) )
					{