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
value,
																	ParameterAccessor.UTF_8_ENCODE ) ) );
						}
					}
					catch ( UnsupportedEncodingException e )
					{
						
					}
				}
				
				if ( !reportName.toLowerCase( ).endsWith(
						ParameterAccessor.SUFFIX_REPORT_DOCUMENT )
						&& baseURL
								.lastIndexOf( IBirtConstants.SERVLET_PATH_FRAMESET ) > 0 )
				{
					link.append( ParameterAccessor.getQueryParameterString(
							ParameterAccessor.PARAM_OVERWRITE, String
									.valueOf( true ) ) );
				}
			}
			if ( locale != null )
			{
				link.append( ParameterAccessor.getQueryParameterString(
						ParameterAccessor.PARAM_LOCALE, locale.toString( ) ) );
			}
			if ( isRtl )
			{
				link.append( ParameterAccessor.getQueryParameterString(
						ParameterAccessor.PARAM_RTL, String.valueOf( isRtl ) ) );
			}