dp3::blob::BlobOBuffer Class Reference

Abstract base class for output buffer for a blob. More...

#include <BlobOBuffer.h>

Inheritance diagram for dp3::blob::BlobOBuffer:

Public Member Functions
	BlobOBuffer ()
virtual	~BlobOBuffer ()
virtual uint64_t	put (const void *buffer, uint64_t nbytes)=0
	Put the requested nr of bytes. More...
virtual int64_t	setPos (int64_t pos)=0
virtual int64_t	tellPos () const =0

Detailed Description

Abstract base class for output buffer for a blob.

BlobOBuffer is the abstract base class for the sink of a BlobOStream object. In this way the destination of a BlobOStream can be chosen as needed. Currently three sink types are possible:

• BlobOBufStream uses an ostream as the sink. It is mainly meant to write blobs into a file, socket, etc.
• BlobOBufVector<T> uses a vector<T> (where T is char or uchar) as the sink. It is mainly meant for creating blobs to be stored using the classes in the LCS Persistent Object Layer.
• BlobOBufChar uses a plain C-array as the sink. It serves as a helper class for BlobOBufVector, but can also be used in itself.

Constructor & Destructor Documentation

BlobOBuffer()

dp3::blob::BlobOBuffer::BlobOBuffer ( )

inline

~BlobOBuffer()

virtual dp3::blob::BlobOBuffer::~BlobOBuffer ( )

inlinevirtual

Member Function Documentation

put()

virtual uint64_t dp3::blob::BlobOBuffer::put ( const void *  buffer, uint64_t  nbytes  )

pure virtual

Put the requested nr of bytes.

Implemented in dp3::blob::BlobOBufStream.

setPos()

virtual int64_t dp3::blob::BlobOBuffer::setPos ( int64_t  pos )

pure virtual

Set the position in the stream. It returns the new position which is -1 if the stream is not seekable.

Implemented in dp3::blob::BlobOBufStream.

tellPos()

virtual int64_t dp3::blob::BlobOBuffer::tellPos ( ) const

pure virtual

Get the position in the stream. -1 is returned if the stream is not seekable.

Implemented in dp3::blob::BlobOBufStream.

---

The documentation for this class was generated from the following file:

• BlobOBuffer.h