Bug 188336 Fairly Simple Report Generates NPE When Saving as Excel
When attempting to Save the attached report to Excel, the following error is displayed in the viewer instead of the Excel file: + org.eclipse.birt.report.service.api.ReportServiceException: Error happened while running the report; nested exception is: java.util.EmptyStackException
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/ExcelEmitter.java
}
	public void startPage( IPageContent page )
	{
	}
	public void startRow( IRowContent row )
	{
	}
	/**
	 * Calculate the left or right border's style.
	 * 
	 * @param content
	 */
	private void startCase( IContent content )
	{
		Span span = (Span) design2ExcelSpan.get( content.getGenerateBy( ) );
		engine.addContainerStyle( content.getComputedStyle( ), span, lb
				.getListSize( span.getCol( ) ) );
	}
	public void startTable( ITableContent table )
	{
		TableBinding tb = (TableBinding) table2TableBinding.get( table
				.getGenerateBy( ) );
		
		if ( tb != null )
		{
			groupInfos
					.push( new GroupInfo( "Table", tb.getColumnExpression( ) ) );
			tableBindings.push( tb );
		}
		startCase( table );