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
extends
			AbstractGetCascadeParameterActionHandler
{
	/**
	 * Constructor.
	 * 
	 * @param context
	 * @param operation
	 */
	public BirtGetCascadeParameterActionHandler( IContext context,
			Operation operation, GetUpdatedObjectsResponse response )
	{
		super( context, operation, response );
	}
	protected void __execute( ) throws Exception
	{
		ViewerAttributeBean attrBean = (ViewerAttributeBean) context.getBean( );