Bug 152948 Print as pdf not working for bar chart having Y-Series interactivity.
In BIRT2.1 release, a bar chart having a drill-through set on its Y-Series when rendered works fine, but on clicking the print as pdf option, produces a blank page. In the same report, if the drill-through is set on the chart area interactivity, everything including the print as pdf option works fine.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ViewerHTMLActionHandler.java
{
			bookmark = URLEncoder.encode( bookmark,
					ParameterAccessor.UTF_8_ENCODE );
		}
		catch ( UnsupportedEncodingException e )
		{
			
		}
		link.append( baseURL );
		link.append( ParameterAccessor.QUERY_CHAR );
		
		if ( document != null )
		{
			link.append( ParameterAccessor.PARAM_REPORT_DOCUMENT );
			link.append( ParameterAccessor.EQUALS_OPERATOR );
			String documentName = document.getName( );
			try
			{
				documentName = URLEncoder.encode( documentName,
						ParameterAccessor.UTF_8_ENCODE );
			}
			catch ( UnsupportedEncodingException e )
			{
				
			}
			link.append( documentName );
		}
		else if ( action.getReportName( ) != null
				&& action.getReportName( ).length( ) > 0 )
		{