Abstract base class for input buffer for a blob. More...
#include <BlobIBuffer.h>
Inheritance diagram for dp3::blob::BlobIBuffer:
Public Member Functions | |
| BlobIBuffer () | |
| Constructor. More... | |
| virtual | ~BlobIBuffer () |
| Destructor. More... | |
| virtual uint64_t | get (void *buffer, uint64_t nbytes)=0 |
| Get 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 input buffer for a blob.
BlobIBuffer is the abstract base class for the source of a BlobIStream object. In this way the source of a BlobIStream can be chosen as needed. Currently three source types are possible:
- BlobIBufStream uses an istream as the source. It is mainly meant to read blobs from a file, socket, etc.
- BlobIBufChar uses a plain C-array as the source. Its mainly used as a helper class, but can also be used in itself.
- BlobIBufVector<T> uses a vector<T> (where T is char or uchar) as the source. It uses BlobIBufChar to do the actual work.
- BlobIBufString uses a BlobString as the source. It uses BlobIBufChar to do the actual work. It is mainly meant for reading blobs stored using the LCS Persistency Layer.
Constructor & Destructor Documentation
◆ BlobIBuffer()
|
inline |
Constructor.
◆ ~BlobIBuffer()
|
inlinevirtual |
Destructor.
Member Function Documentation
◆ get()
|
pure virtual |
Get the requested nr of bytes.
Implemented in dp3::blob::BlobIBufStream.
◆ setPos()
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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::BlobIBufStream.
◆ tellPos()
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pure virtual |
Get the position in the stream. -1 is returned if the stream is not seekable.
Implemented in dp3::blob::BlobIBufStream.
The documentation for this class was generated from the following file:
