On Wed, Sep 16, 2009 at 9:30 AM, Tom Hughes <[email protected]> wrote: > > This is NOT true. As I explained yesterday there is a very good reason > why we do not store a node revision in current_way_nodes and way_nodes. > > The problem is that if you do that then every time a node is changed you > have to go and find every way which uses that node and update it to use > the new version of the node. So it costs CPU time every time a node > is changed. >
Can a way assume that it uses the most recent version of a node until the way is changed? Then, when a way's revision number increments, all of the rev#'s for the nodes that make up that way are saved along with the way's history.
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