Symbian
Symbian OS Library

SYMBIAN OS V9.3

[Index] [Spacer] [Previous] [Next]



Location: obexobjects.h
Link against: obex.lib

Class TObexFilenameBackedBuffer

class TObexFilenameBackedBuffer : public TObexBufferingDetails;

Description

Provides alternate behaviour for a CObexBufObject, allowing use of a file to hold the object in its entirety. Writes to this object are buffered through the supplied CBufBase derived object, which is never enlarged. Once it is full, the data is flushed to the file.

Derivation

Members

Defined in TObexFilenameBackedBuffer:
TObexFilenameBackedBuffer()


Construction and destruction


TObexFilenameBackedBuffer()

IMPORT_C TObexFilenameBackedBuffer(CBufBase &aBuffer, const TPtrC &aFilename, CObexBufObject::TFileBuffering aBufferingStrategy);

Description

Build a variant of TObexBufferingDetails which instructs the CObexBufObject to use a file as the main data store, buffering writes to this in chunks. Writes are buffered into the supplied CBufBase derived object, which is not resized. Once it is full, the data contained is written to file. Double buffering can be specified by setting aBufferingStrategy appropriately. If the file cannot be opened for read/write access it will be opened in read only mode. In this situation, attempts to store data in this object will cause an Obex error to be signalled in response to the Obex packet which carried the body data.

Parameters

CBufBase &aBuffer

The buffer to use as a temporary store. This is ignored when reading from the file.

const TPtrC &aFilename

The filename to use to permanently store the object.

CObexBufObject::TFileBuffering aBufferingStrategy

Use double or single buffering.