The C:\Fixed.xlsx file, for which the example is createdStringPositionStart: Integer;
The StringPositionStart determines a start position of attribute in a string.
The attribute end position in the string is determined by the ICubeMetaLoaderBindingParser.StringPositionEnd property.
The StringPositionStart property is taken into account if the ICubeMetaLoaderBindingParser.ParserType value is CubeMetaLoaderParserType.FixedPosition.
Executing the example requires a time series database with the OBJ_FC identifier and the time series export file C:\Fixed.xlsx. Also, the repository must contain an MDM repository with the MDM_REPO identifier. This repository should have dictionaries with the DICT_CTR, DICT_IND and UNITS identifiers. The COUNTRY attribute of the time series database refers to the DICT_CTR dictionary, the INDICATOR attribute is a link to the DICT_IND dictionary, and measurement units refer to the UNITS dictionary.
The C:\Fixed.xlsx file, for which the example is created
Sub Main;
Var
Mb: IMetabase;
NsiDescr: IMetabaseObjectDescriptor;
CubeMetaLoader: ICubeMetaLoader;
CrInfo: IMetabaseObjectCreateInfo;
Obj: IMetabaseObject;
ObjDesc: IMetabaseObjectDescriptor;
CubeMetaLoaderBindings: ICubeMetaLoaderBindings;
CalendarBinding: ICubeMetaLoaderBinding;
CountryBinding: ICubeMetaLoaderBinding;
IndicatorBinding: ICubeMetaLoaderBinding;
UnitBinding: ICubeMetaLoaderBinding;
ScaleBinding: ICubeMetaLoaderBinding;
LevelBinding: ICubeMetaLoaderBinding;
ValueBinding: ICubeMetaLoaderBinding;
Parser: ICubeMetaLoaderBindingParser;
Excel: IDtExcelProvider;
Provider: IDatasetDataProvider;
Log: ICubeMetaLoaderLog;
Entry: ICubeMetaLoaderLogEntry;
Count, i: Integer;
Begin
Mb := MetabaseClass.Active;
NsiDescr := Mb.ItemById("RDS_REPO");
CrInfo := Mb.CreateCreateInfo;
CrInfo.ClassId := MetabaseObjectClass.KE_CLASS_CUBEMETALOADER;
CrInfo.Id := "CUBEMETALOADER";
CrInfo.Permanent := False;
ObjDesc := Mb.CreateObject(CrInfo);
Obj := ObjDesc.Edit;
CubeMetaLoader := Obj As ICubeMetaLoader;
CubeMetaLoader.LoadType := CubeMetaLoaderLoadType.CreateAndUpdate;
CubeMetaLoader.Rubricator := Mb.ItemById("OBJ_FC").Bind As IRubricator;
CubeMetaLoaderBindings := CubeMetaLoader.Bindings;
CalendarBinding := CubeMetaLoaderBindings.Add;
CalendarBinding.BindingType := CubeMetaLoaderBindingType.Calendar;
CalendarBinding.CalendarOptions.Levels := DimCalendarLevelSet.Year;
CalendarBinding.ByColumns := False;
CalendarBinding.CalendarDateFormat := "$Year$";
CalendarBinding.FieldType := CubeMetaLoaderFieldType.Name;
CalendarBinding.Field := "Year";
Parser := CalendarBinding.Parser;
Parser.ParserType := CubeMetaLoaderParserType.FixedPosition;
CalendarBinding.Parser.StringPositionStart := 2;
CalendarBinding.Parser.StringPositionEnd := -1;
IndicatorBinding := CubeMetaLoaderBindings.Add;
IndicatorBinding.BindingType := CubeMetaLoaderBindingType.Attribute;
IndicatorBinding.Attribute := "INDICATOR";
IndicatorBinding.Field := "Indicator Code";
IndicatorBinding.FieldType := CubeMetaLoaderFieldType.Name;
IndicatorBinding.Dimension := Mb.ItemByIdNamespace("DICT_IND", NsiDescr.Key).Bind As IDimensionModel;
// IX_CODE - is a dictionary DICT_IND unique key
IndicatorBinding.Index := "IX_CODE";
IndicatorBinding.KeyAttribute := "KEY";
Parser := IndicatorBinding.Parser;
Parser.ParserType := CubeMetaLoaderParserType.FixedPosition;
Parser.StringPositionStart := 2;
Parser.StringPositionEnd := -1;
CountryBinding := CubeMetaLoaderBindings.Add;
CountryBinding.BindingType := CubeMetaLoaderBindingType.Attribute;
CountryBinding.Attribute := "COUNTRY";
CountryBinding.Field := "Country Code";
CountryBinding.FieldType := CubeMetaLoaderFieldType.Name;
CountryBinding.Dimension := Mb.ItemByIdNamespace("DICT_CTR", NsiDescr.Key).Bind As IDimensionModel;
// IX_WEO - is a dictionary DICT_CTR unique key
CountryBinding.Index := "IX_WEO";
CountryBinding.KeyAttribute := "KEY";
CountryBinding.NameAttribute := "NAME";
Parser := CountryBinding.Parser;
Parser.ParserType := CubeMetaLoaderParserType.FixedPosition;
Parser.StringPositionStart := 3;
Parser.StringPositionEnd := 5;
LevelBinding := CubeMetaLoaderBindings.Add;
LevelBinding.BindingType := CubeMetaLoaderBindingType.Attribute;
LevelBinding.Attribute := "DL";
LevelBinding.FieldType := CubeMetaLoaderFieldType.ConstValue;
LevelBinding.FieldValue := DimCalendarLevel.Year As Integer;
UnitBinding := CubeMetaLoaderBindings.Add;
UnitBinding.BindingType := CubeMetaLoaderBindingType.Unit;
UnitBinding.Field := "Units";
UnitBinding.FieldType := CubeMetaLoaderFieldType.Name;
Parser := UnitBinding.Parser;
Parser.ParserType := CubeMetaLoaderParserType.FixedPosition;
Parser.StringPositionStart := 0;
Parser.StringPositionEnd := 11;
ScaleBinding := CubeMetaLoaderBindings.Add;
ScaleBinding.BindingType := CubeMetaLoaderBindingType.Unit;
ScaleBinding.Field := "Scale";
ScaleBinding.FieldType := CubeMetaLoaderFieldType.Name;
ScaleBinding.Dimension := Mb.ItemByIdNamespace("UNITS", NsiDescr.Key).Bind As IDimensionModel;
// IX_WEO_UNIT_SCALE - is a dictionary UNITS unique key
ScaleBinding.Index := "IX_WEO_UNIT_SCALE";
ScaleBinding.KeyAttribute := "KEY";
Parser := ScaleBinding.Parser;
Parser.ParserType := CubeMetaLoaderParserType.FixedPosition;
Parser.StringPositionStart := 0;
Parser.StringPositionEnd := -1;
ValueBinding := CubeMetaLoaderBindings.Add;
ValueBinding.BindingType := CubeMetaLoaderBindingType.Value;
ValueBinding.Field := "Value";
ValueBinding.FieldType := CubeMetaLoaderFieldType.Name;
Parser := ValueBinding.Parser;
Parser.ParserType := CubeMetaLoaderParserType.FixedPosition;
Parser.StringPositionStart := 0;
Parser.StringPositionEnd := -1;
Excel := New DtExcelProvider.Create;
Excel.ImexMode := DtExcelImexMode.Import;
Excel.File := "C:\Fixed.xlsx";
Excel.Query := "SELECT * FROM [Sheet1$]";
Excel.HasHeader := True;
Excel.CheckFieldName := True;
Excel.Open;
Provider := Excel As IDatasetDataProvider;
CubeMetaLoader.Data := Provider;
CubeMetaLoader.LoadData;
Log := CubeMetaLoader.Log;
Count := Log.Count;
Debug.WriteLine("Total number of records in the log: " + Count.ToString);
For i := 0 To Count - 1 Do
Entry := Log.Item(i);
Debug.WriteLine(i.ToString + " : "
+ Entry.DateBegin.ToString + ","
+ Entry.RecordNumber.ToString + ","
+ Entry.Field + ","
+ Entry.ErrorMessage);
If i >= 10 - 1 Then
Break;
End If;
End For;
End Sub Main;
After executing the example factors are exported from the C:\Fixed.xlsx file. Attributes are recognized by fixed positions.
See also:
