[Imports] Bulk Import of Hotels

[Pieren]

On Thu, Jan 28, 2010 at 1:37 PM, Greg Troxel <gdt at ir.bbn.com> wrote:

>
> I've been thinking about how to handle maintenance of imports; so far
> osm has tended to import once and then just edit.  My suggestion is to
> put whatever database primary key you use on the node, and to be able to
> look at the node and tell which import was done, which really means the
> internal date or whatever identifier of your database extract.
>
>
But what happens if someone replaces your imported node with a new one or
the node is deleted or someone just changes your primary key for fun ?
I think it would be better to keep the node_id or way_id (building) in your
own database and check regularly if your element is still at the right
location (with some tolerance) with the right tags (with some tolerance) .
Then if the POI has been removed, check if the same one has not been
recreated around. If yes, just refresh the node_id in your db. If not,
recreate the POI or revert the deletion. The link between your db and OSM is
the lat/lon, not an id which is not guaranteed in time.

Pieren
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