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

• TObexBufferingDetails - Wraps parameters which can affect the buffering method used by the CObexBufObject

• TObexFilenameBackedBuffer - Provides alternate behaviour for a CObexBufObject, allowing use of a file to hold the object in its entirety

Members

Defined in TObexFilenameBackedBuffer:
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.