Hi,

Just a couple of thoughts,

> I strongly believe that those migration problems are perhaps caused
> by a too-twisted treatment of the recordings and the workflows in
> matterhorn. In the current philosophy, "workflow" is just a certain
> way of seeing a mediapackage, while the search results are another

I wouldn't quite say this.  I'd say that a media package is a
data structure, a workflow is a function, the results of running a
workflow are a bunch of other data structures, and that there is not a
clear link between the input data structure (media package) and the
output data structures (indicies, media files, distributed files, other
service calls, etc).

When you upgrade matterhorn you may change the workflow (intermediate
function).

Note that the function can take an identical mediapackage but result in
different output data structures.  There is no garuntee that the
function is a one way mapping.

> relates all the files of a mediapackage--, so that you just cannot
> get a complete picture of the mediapackage altogether. I strongly
> believe that we should see the mediapackage as a list of related
> files including media, metadata and attachments TO WHICH you can

I think the episode service is looking to do some of this.  That said,
I don't think anyone has suggested that published media is tied in any
way to the originally ingested media package.  Without this things like
URLs will continue to change, and that remains a pain point for folks.

> mediapackages at the system, to which you can apply different
> workflows, thus modifying the number, type, flavor, metadata, etc. of
> the files in the mediapackage. 2) Everything is centralized: the
> mediapackage flavors can tell you which files were the originally

How do you manage distributed artifacts as part of the media package?
E.g. something we publish to itunes?

Chris
-- 
Christopher Brooks, BSc, MSc
ARIES Laboratory, University of Saskatchewan

Web: http://www.cs.usask.ca/~cab938
Phone: 1.306.966.1442
Mail: Advanced Research in Intelligent Educational Systems Laboratory
     Department of Computer Science
     University of Saskatchewan
     176 Thorvaldson Building
     110 Science Place
     Saskatoon, SK
     S7N 5C9
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