Joutsen.Persistence.Lobs.Blob Class Reference

A base class for streaming data to a database. More...

Public Member Functions
abstract ReadOnlyStream	OpenReader ()
	Provides read access to the data of this Blob by providing a stream. More...
virtual void	WriteTo (Stream output)
	Writes the data of this Blob to a stream. More...

Detailed Description

A base class for streaming data to a database.

Remarks

This class is supposed to represent large binary data, trying to keep it out of memory as much as possible. It is immutable and only handles transfering the input data out to a different stream or reader. It is intended to lazy load large binary data as much as possible.
It is inspired by http://blog.calyptus.eu/seb/2009/03/large-object-storage-for-nhibernate-and-ddd-part-1-blobs-clobs-and-xlobs/

Since

0.3.0

Member Function Documentation

OpenReader()

abstract ReadOnlyStream Joutsen.Persistence.Lobs.Blob.OpenReader ( )

pure virtual

Provides read access to the data of this Blob by providing a stream.

Returns

a stream that provides read access to the data

Remarks

The returned stream is not managed and needs to be disposed of outside of this method.

Implemented in Joutsen.Persistence.Lobs.StreamBlob.

WriteTo()

virtual void Joutsen.Persistence.Lobs.Blob.WriteTo ( Stream  output )

virtual

Writes the data of this Blob to a stream.

Parameters

output

the stream to write the data to