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/ReportEngineService.java
boolean isResourceOk = true;
		if ( !resourceFile.exists( ) )
		{
			isResourceOk = resourceFile.mkdirs( );
		}
		if ( isResourceOk )
		{
			config.setProperty(
					ParameterAccessor.INIT_PARAM_BIRT_RESOURCE_PATH,
					resourcePath );
		}
		
		imageDirectory = servletConfig.getServletContext( ).getInitParameter(
				ParameterAccessor.INIT_PARAM_IMAGE_DIR );
		if ( imageDirectory == null || imageDirectory.trim( ).length( ) <= 0
				|| ParameterAccessor.isRelativePath( imageDirectory ) )
		{
			imageDirectory = servletConfig.getServletContext( ).getRealPath(
					"/report/images" ); 
		}
		
		imageBaseUrl = "/run?__imageID="; 
		
		String logDirectory = servletConfig.getServletContext( )
				.getInitParameter( ParameterAccessor.INIT_PARAM_LOG_DIR );
		if ( logDirectory == null || logDirectory.trim( ).length( ) <= 0
				|| ParameterAccessor.isRelativePath( logDirectory ) )
		{
			logDirectory = servletConfig.getServletContext( ).getRealPath(
					"/logs" );