One more note:

> BTW, current version of JayBird contains implementation for
> Blob.length() and has FBBlob.FBBlobInputStream.seek(int).

seek(int) will work only for not segmented blobs. All blobs created
with new version of JayBird are stream blobs (not segmented), however
there is no way to convert segment blob into stream blob except
copying the content.

Roman