Bug 138828 Export data column are disordered
Steps to reproduce: 1.Add a sample data source and a data set with table "CUSTOMERS" 2.Preview in Web Viewer 3.Click "Export data", choose columns "CUSTOMERNAME","PHONE","CITY","STATE" to be exported, click "OK" Expected result: The exported columns is alphabetic order or the same order as selected columns Actual result: The exported columns is disordered. they are "STATE","CITY","CUSTOMERNAME","PHONE".
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/api/IViewerReportService.java
/**
	 * Get the parameter definitions
	 * 
	 * @param design
	 * @param runOptions
	 * @return a Collection of ScalarParameter
	 * @throws ReportServiceException
	 */
	Collection getParameterDefinitions( IViewerReportDesignHandle design,
			InputOptions runOptions ) throws ReportServiceException;
	/**
	 * Get a map of parameter values (name (String) -> value (Object))
	 * 
	 * @param docName
	 * @param options
	 * @return
	 */
	Map getParameterValues( String docName, InputOptions options );
	/**
	 * Get parameter selection list for a cascading parameter group
	 * 
	 * @param design
	 * @param groupName
	 * @param groupKeys
	 * @return a Collection of IParameterSelectionChoice
	 * @throws ReportServiceException
	 */
	Collection getSelectionListForCascadingGroup(
			IViewerReportDesignHandle design, String groupName,
			Object[] groupKeys ) throws ReportServiceException;