Am 15.01.2010 09:05, schrieb Jiri Klement: > I think it would be nice to use search patterns in mappaint. The style > information is cached in OsmPrimitive so it shouldn't have impact on > overall performance. And there are probably other usecases when > key=value matching is not sufficient. > > Actually I was planning to do some prototype to see if performance > really isn't a problem
Might be a problem for initial reading of large datasets, but you cannot say wether it's acceptable or not until you've really tried it. That's the conclusion I've got when doing the first round of mappaint performance improvements a lot of time ago :-) > and then ask here if it is really a good idea > to switch to search patterns. But when avar brought it up, we can > start the discussion now. So are there any other usecases when search > patterns would be usefull in mappaint or any objections agains search > patterns? Avar was the first one I've seen to come up with "show me stuff from user xy in a special way". I'm unsure if this is really a common use case. Personally, I'd like to keep things simple here - so even none developers have at least a chance to write their own rendering rules. Otherwise complexity grows and grows and ends up like the mapnik rendering rules with embedded SQL statements - the learning curve is now really high :-( Today, elemstyles.xml format is pretty simple and I like it that way. Regards, ULFL _______________________________________________ josm-dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/josm-dev
