Re: Renditions/Reviews/Thumbnails in WebDAV

Werner Donné wrote:
> Hi,
> 
> I would not limit preview-sets to images. Any type of document can have a
> preview thumbnail (cfr. Coverflow on Mac OS X).

Yes, that was the intention. Another use case are short, low-quality 
excerpts from audio files.

> When retrieving preview-set in expand-property, into what the URLs in
> preview-set would expand?

That would be server-defined. In theory, it wouldn't need to be WebDAV 
resources at all.

> There should be a property to represent an embedded form of a thumbnail, 
> i.e.
> one that also contains an element with the base64-encoded binary stream of
> the thumbnail. This way the contents of a folder, thumbnails included, 
> could
> be retrieved with a single round-trip, which is much more efficient on the
> server-side. Such a property would be available directly in the PROPFIND
> method.
> ...

In theory that can be done using the "data" uri scheme as well.

The tricky question here is who's role is to decide when inlining is 
better; the client or the server? (the latter does have more information 
about the size).

Also, inlining has the drawback of defeating caching.

BR, Julian