MS-RFC-27: Label Priority
dmorissette at MAPGEARS.COM
Tue May 22 16:01:28 EDT 2007
Frank Warmerdam wrote:
> Can you comment on why you use a multiple cache approach instead of doing
> a quicksort on a single cache based on the priority value? A quicksort
> is order n-log-n which should be a very modest performance impact.
But the array of caches has zero-cost, that's even better. Well, the
cost is the limit on the number of possible PRIORITY values. If others
think we should be doing a sort then I'll look at that possibility, but
personally I don't like the impact on performance, no matter how small
> Also, is the priority something that can come from an attribute? I think
> i'm asking if there is a corresponding PRIORITYITEM though I'm not sure.
Good point. I added that as a question in the RFC. I'll have to look at
how Steve handled the RFC-19 stuff and see if we can apply the mechanism
in this case.
> Lastly, should the RFC touch on the corresponding mapscript changes?
I've added a "MapScript Implications" section (one-liner).
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