IDtTextProvider.RangeHasHeader

Syntax

RangeHasHeader: Boolean;

Description

The RangeHasHeader property determines whether column headers are located in the first file row.

By default the property is set to False, field names are generated automatically (FIELD0, FIELD1, and so on).

Example

Executing the example requires that the repository contains an ETL task with the Etl identifier, and the text file Data.txt in the disk C root directory.

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 the provider creation

//The Import From Text object creation

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 + row transfer

TextProvider.DelimitedColumnDelimiter := #9; //The TAB key

TextProvider.FieldsFromFile;

EtlProvider.FillDefault;

//Save provider

EtlProvider.Save;

//End of 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. The provider imports data from the Data.txt text file. During import the Carriage return+Row transfer combination is used as a row delimiter, and Tabulation symbol - as a field delimiter. Field names are imported from the first file row.