Class CDaFileImporter

class CDaFileImporter : public CDaIncremental;

Description

Base class for classes that import a file into a data application model.

Derivation

• MDaIncremental - Abstract interface for classes that implement data model incremental operations
• CBase - Base class for all classes to be instantiated on the heap

• CDaIncremental - CBase-based class for classes that implement data model incremental operations

• CDaFileImporter - Base class for classes that import a file into a data application model

Members

Defined in CDaFileImporter:
CDaFileImporter(), CloseL(), DoNext(), EBeforeStartOfToken, EEndOfFile, EReadingToken, EStartOfFile, HandleCancel(), HandleLeave(), ImportL(), Next(), OpenL(), TState, iColumnBuffer, iFile, iFileSize, iFs, iLineBuffer, iParams, iRecNo, iRow, iState, iTotalBytesRead, ~CDaFileImporter()

Inherited from CBase:
Delete(), Extension_(), operator new()

Inherited from CDaIncremental:
DoCancel(), Initialize(), SetActiveIncremental(), SetObserver(), TerminationState(), iActiveIncremental, iObserver, iRemainingSteps, iTerminationState

IMPORT_C CDaFileImporter(TDaFileImportParams const &aParams);

Description

Constructor.

Parameters

TDaFileImportParams const &aParams Import parameters

IMPORT_C ~CDaFileImporter();

Description

Destructor.

IMPORT_C void OpenL();

Description

Opens the database to which to import.

virtual IMPORT_C void CloseL();

Description

Closes the database.

virtual IMPORT_C TInt ImportL();

Description

Begins the data importation.

This calls Next() until that function says that there are no remaining steps.

Return value

TInt System wide error code

virtual IMPORT_C TInt Next(TInt &aRemainingSteps);

Description

Interface to performing an incremental step in data importation.

The default implementation simply calls DoNext().

Parameters

TInt &aRemainingSteps On return, number of remaining steps

Return value

TInt System wide error code

virtual IMPORT_C TInt DoNext(TInt &);

Description

Implements an incremental step in data importation.

The default implementation simply returns KErrGeneral.

Parameters

TInt &

Return value

TInt System wide error code.

virtual IMPORT_C void HandleLeave(TInt aError);

Description

Utility function to handle a leave occurring in data importation.

It calls the object's active object cancel function.

Parameters

TInt aError System wide error code

virtual IMPORT_C void HandleCancel();

Description

Utility function to handle a cancel event occurring in data importation.

It calls the object's active object cancel function.

protected: TState

Description

Import operation states.

EBeforeStartOfToken Read position is before the start of an input field. EReadingToken Input field is being read. EEndOfFile End of import file. EStartOfFile Start of import file.

protected: TDaFileImportParams iParams;

Description

Import parameters set on construction.

protected: RFs iFs;

Description

File server handle.

protected: RFileBuf iFile;

Description

Handle to import file.

protected: TState iState;

Description

Import operation state.

protected: CDaRow * iRow;

Description

Row pointer.

protected: CBufFlat * iLineBuffer;

Description

Input line buffer.

protected: CBufFlat * iColumnBuffer;

Description

Column import buffer.

protected: TInt iRecNo;

Description

Number of records imported.

protected: TInt iTotalBytesRead;

Description

Number of bytes imported.

protected: TInt iFileSize;

Description

Import file size.