- # Read full version of old way
- # For get_nodes_undelete, uses same nodes, even if they've moved since
- # For get_nodes_revert, allocates new ids
- # Currently returns Potlatch-style array
- # where [5] indicates whether latest version is usable as is (boolean)
- # (i.e. is it visible? are we actually reverting to an earlier version?)
-
- def get_nodes_undelete
- points = []
- self.nds.each do |n|
- node=Node.find(n)
- points << [node.lon, node.lat, n, node.version, node.tags_as_hash, node.visible]
- end
- points
- end
-
- def get_nodes_revert(timestamp)
- points=[]
- self.nds.each do |n|
- oldnode=OldNode.find(:first, :conditions=>['id=? AND timestamp<=?',n,timestamp], :order=>"timestamp DESC")
- curnode=Node.find(n)
- id=n; reuse=curnode.visible
- if oldnode.lat!=curnode.lat or oldnode.lon!=curnode.lon or oldnode.tags!=curnode.tags then
- # node has changed: if it's in other ways, give it a new id
- if curnode.ways-[self.id] then id=-1; reuse=false end
- end
- points << [oldnode.lon, oldnode.lat, id, curnode.version, oldnode.tags_as_hash, reuse]
- end
- points
- end