Bug 173224 [regression] preview attached report caused data exception
steps to reproduce: - preview attached report within deployed birt report viewer expected behavior: - report is rendered properly actual behavior: - exception thrown in console, although report was rendered
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/actionhandler/BirtGetCascadeParameterActionHandler.java
{
							keyValue[params.size( ) + i] = listArray[i].get( 0 );
						}
					}
					listArray[k] = doQueryCascadeParameterSelectionList(
							remainingParamNames.get( k ).toString( ), design,
							group.getName( ), keyValue, options, attrBean );
					ret.put( remainingParamNames.get( k ), listArray[k] );
				}
			}
		}
		catch ( RemoteException e )
		{
			throw new ReportServiceException( e.getLocalizedMessage( ) );
		}
		return ret;
	}
	private List doQueryCascadeParameterSelectionList( String paramName,
			IViewerReportDesignHandle design, String groupName,
			Object[] groupKeys, InputOptions options,
			ViewerAttributeBean attrBean ) throws RemoteException,
			ReportServiceException
	{
		List selectionList = new ArrayList( );
		Collection list = getReportService( )
				.getSelectionListForCascadingGroup( design, groupName,
						groupKeys, options );
		if ( list != null && list.size( ) > 0 )
		{