Bug 152554 ReportServiceException is thrown out in PDF when preview attached design file
ReportServiceException is thrown out in PDF when preview attached design file, this exception doesn't occur in WebViewer/HTML. Error log: org.eclipse.birt.report.service.api.ReportServiceException: Error happened while running the report
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFLayoutManagerFactory.java
private Object handleText( ITextContent content )
		{
			boolean isInline = parent instanceof PDFLineAreaLM;
			if ( isInline )
			{
				assert ( parent instanceof PDFLineAreaLM );
				DimensionType width = content.getWidth( );
				
				
				if ( width != null )
				{
					return new PDFTextInlineBlockLM( context, parent, content,
							executor );
				}
				else
				{
					return new PDFTextLM( context, parent, content, 
							executor );
				}
			}
			else
			{
				String text = content.getText( );
				if(text==null || "".equals( text )) 
				{
					content.setText( " " ); 
				}
				return new PDFTextBlockContainerLM( context, parent, content,
						executor );
			}