David Earl wrote: > On 05/10/2009 11:43, Lester Caine wrote: >> Rather than all these separate elements, tag values should form part >> of the tagkey object, and descriptions can be added at any level. I >> need to find the link to a good example, but >> >> <tag name='barrier' type='value' relevantto='node'> >> <tagvalue name='gate' /> >> <tagvalue name='bollard'/> >> <tagvalue name='bollards'/> >> <description lang='en'>one or a series >> of short posts for excluding or diverting motor vehicles from a >> road, lawn, or the like</decription> >> <tag/> >> >> But I suspect this is just a misunderstanding, as a scheme needs to be >> defined in .xsl. >> http://www.cabinetoffice.gov.uk/media/260545/BuildingStructure.xml is >> a good example of a definition of a building with enumerated tag >> values. I was trying to find the one that goes with 'landuse' but I >> don't have time ... need to be on the road by 1 ... > > You're probably right - this was only a first attempt at suggesting the > principle. > > In practice, the actual representation would be as database tables, and > this gets exposed through the API as XML. I would think the values would > typically be in a separate table, which is why I wrote it the way I did, > but the API doesn't have to deliver it separately as I wrote it. > > I think you'd still want to be able to filter descriptions and possibly > other aspects by selected language to limit the size, but that's a minor > detail.
If one ignores the 'XML' then things are very much easier, and yes there would be table for 'descriptions', with a language flag as well as the 'id' for the description. Lookup would return a selected language or English if there is no alternative. THIS table would simply be used by anything that need to return a text string - and needs it translating - not just descriptions ;) I think though - we need to define a proper xsl schema wjjjjjich can be used WITH the tag data :( -- Lester Caine - G8HFL ----------------------------- Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk// Firebird - http://www.firebirdsql.org/index.php _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
