RangeFirstRow: Integer;
The RangeFirstRow property determines the number of the row starting from which the data is imported.
Executing the example requires that the repository contains an ETL task with the ETL identifier and the Data.txt file in the root of the C disk.
Sub Main;
Var
MB: IMetabase;
MObj: IMetabaseObject;
EtlTask: IEtlTask;
EtlProvider: IEtlPlainDataProvider;
TextProvider: IDtTextProvider;
WxProvider: IWxRectangle;
WxETLProvider: IWxETLObject;
Begin
MB := MetabaseClass.Active;
// ETL task search. Repository object with the ETL identifier
MObj := MB.ItemById("ETL").Edit;
EtlTask := MObj As IEtlTask;
// Start of data provider creation
// Create the "Import from Text" object
EtlProvider := EtlTask.Create(EtlObjectType.PlainDataTextProvider) As IEtlPlainDataProvider;
EtlProvider := EtlProvider.Edit;
EtlProvider.Id := "Text_Provider";
EtlProvider.Name := "Import from Text";
EtlProvider.Description := "Import from Text";
// Set up data provider
TextProvider := EtlProvider.Provider As IDtTextProvider;
TextProvider.File := "c:\Data.txt";
TextProvider.RangeHasHeader := True;
TextProvider.RowDelimiter := #13 + #10; //Carriage return + Line feed
TextProvider.DelimitedColumnDelimiter := #9; //TAB key
TextProvider.RangeFirstRow := 5;
TextProvider.FieldsFromFile;
EtlProvider.FillDefault;
// Save data provider
EtlProvider.Save;
// End of data provider creation
// Start of visual object creation
WxProvider := EtlTask.Workspace.CreateRectangle;
WxETLProvider := New WxETLObject.Create;
WxETLProvider.ETLObject := EtlProvider;
WxProvider.Style.TextPosition := WxTextPosition.Bottom;
WxProvider.Style.PictureMarginTop := -10;
WxProvider.PinPosition := New GxPointF.Create(50, 50);
WxProvider.Extension := WxETLProvider As IWxShapeExtension;
// End of visual object creation
// Save ETL task
MObj.Save;
End Sub Main;
After executing the example the Import from Text object is created in the ETL task. This data provider imports data from the specified text file. During import the Carriage Return+Line Feed combination is used as a row delimiter, and Tabulation symbol - as a field delimiter. Field names are imported from the first file row. Data is imported starting from the fifth file row.
See also: