Re: Precondition add-must-be-new-label

The add-must-be-new precondition only applies if DAV:add is specified in 
the LABEL request (i.e. you want it to fail if the label is already 
applied to some version).

You use DAV:set in the LABEL request if you want to move the label from 
one version to another.

Cheers,
Geoff

Werner wrote on 07/14/2006 12:58:41 PM:

> 
> Hi,
> 
> The add-must-be-new precondition of the LABEL method makes it
> impossible to move a label. Moving a label requires a remove
> followed by an add, which are two round-trips. Instead of
> having the precondition, the postcondition label-must-be-unique
> would provide the same data integrity, while avoiding the
> extra round-trip.
> 
> An additional advantage is that the move would be atomic. A
> remove followed by an add is not. The impact of a failure in
> between can be dramatic.
> 
> Regards,
> 
> Werner.
> -- 
> Werner Donné  --  Re
> Engelbeekstraat 8
> B-3300 Tienen
> tel: (+32) 486 425803   e-mail: werner.donne@re.be
>