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
* 
	 * @param context
	 * @param options
	 */
	void setContext( Object context, InputOptions options );
	/**
	 * Run a report
	 * 
	 * @param design
	 * @param outputDocName
	 * @param runOptions
	 * @param parameters,
	 *            a map of unparsed parameters (i.e. name (String) -> value
	 *            (String))
	 * @return
	 * @throws ReportServiceException
	 */
	String runReport( IViewerReportDesignHandle design, String outputDocName,
			InputOptions runOptions, Map parameters )
			throws ReportServiceException;
	/**
	 * Get the report design handle from the document
	 * 
	 * @param docName
	 * @param options
	 * @return
	 * @throws ReportServiceException
	 */
	IViewerReportDesignHandle getReportDesignHandle( String docName,
			InputOptions options ) throws ReportServiceException;