Re: [MMUSIC] Partial Offer/Partial Answer draft

[Adam Roach <[e-mail]>]

On 10/15/13 11:47, Martin Thomson wrote:
> I've a
> third way of doing that, which commits the cardinal sin of ignoring
> RFC5888 and replicates functionality.  But your two options kinda did
> that anyway (and so did similar things I came up with).
>
> m=whatever ...
> a=mid:cnp2346987
> a=rgroup:BUNDLE w3nv567890 <- same
> m=something ...
> a=mid:5709gw78v45
> a=rgroup:BUNDLE w3nv567890 <- identifier
>
> That fixes a problem that I've had with 5888 for a long time: the lack
> of a stable identifier.  Eventually all things need identifiers.
> Using indices or references to other members of groups is indirect and
> brittle.

True, but this has its own point of brittleness: if a media section is 
part of two groups of the same type, you're back to the issue of not 
being able to clearly indicate which of the groups this rgroup attribute 
applies to.

If we can accept the constraint of each media group only belonging to 
(at most) one group of each type, then any single member of a group is 
sufficient to serve as a unique identifier.

/a