On 18/10/06 8:07 AM, "Lisa Dusseault" <[EMAIL PROTECTED]> wrote:

> Extensions
> 
> When the client puts extension elements in a MER, MUST the server store those
> unrecognized extension elements?  I think the answer to this is actually that
> servers often do not and should not be required to do so.  That makes it hard
> for clients to extend AtomPub's syntax in ways that other clients will
> understand but servers don't care about.  Consider the consequences: when some
> enterprising client developer decides to do something cool and useful and
> encounters servers that don't store their metadata in the obvious place, the
> client developer is going to quickly work around that by storing in some
> unobvious place.  For example in HTML comments in the atom entry content, or
> microformats, etc.  Is that all cool?  

This issue also has implications on what extensions are passed through to
the published feed ... a client might insert some extension metadata they
want published (eg. geo-coordinates), and a client might insert some
extension metadata they only want visible within the collection feed (eg.
editor workflow comments) ... with the understanding also that if the server
actually understands a particular extension it might result in extensions
being added/modified outside of the bucket (eg. <ext:include
trackbacks="yes" /> resulting in lots of <link/> elements being added)

We did at one time discuss providing a bucket container specifically for the
latter, with the assumption that extensions outside the bucket are data
elements meant for publication. Having a bucket container would make life
simpler for server implementations -- just store everything as an xml blob,
the same as they do for atom:[EMAIL PROTECTED]

Lisa, would that help?

e.


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