[OSM-dev] visible-Flag in PBF

Jochen Topf jochen at remote.org
Sun May 8 10:21:35 BST 2011


On Fri, May 06, 2011 at 10:46:26PM -0500, Scott Crosby wrote:
> >  - include .proto definitions in the file format? -> self describing;
> > might be of interest of we ever break compatibility; or if you want to
> > read PBF files that were extended by a writer and don't want to hunt
> > down the definitions
> 
> Not useful. Without knowing the semantics of the message, I don't see
> any way to parse it. For instance, how would such a self-describing
> parser know which fields were delta-coding? Or used the keysvals
> encoding used in DenseNodes?

Also protobuf already supports some kind of introspection. I have never worked
with it, because, as Scott says, it doesn't really give you enough information.
But it is there.

Jochen
-- 
Jochen Topf  jochen at remote.org  http://www.remote.org/jochen/  +49-721-388298




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