+ def to_xml_node(visible_nodes = nil, user_display_name_cache = nil)
+ el1 = XML::Node.new 'way'
+ el1['id'] = self.id.to_s
+ el1['visible'] = self.visible.to_s
+ el1['timestamp'] = self.timestamp.xmlschema
+
+ user_display_name_cache = {} if user_display_name_cache.nil?
+
+ if user_display_name_cache and user_display_name_cache.key?(self.user_id)
+ # use the cache if available
+ elsif self.user.data_public?
+ user_display_name_cache[self.user_id] = self.user.display_name
+ else
+ user_display_name_cache[self.user_id] = nil
+ end
+
+ el1['user'] = user_display_name_cache[self.user_id] unless user_display_name_cache[self.user_id].nil?
+
+ # make sure nodes are output in sequence_id order
+ ordered_nodes = []
+ self.way_nodes.each do |nd|
+ if visible_nodes
+ # if there is a list of visible nodes then use that to weed out deleted nodes
+ if visible_nodes[nd.node_id]
+ ordered_nodes[nd.sequence_id] = nd.node_id.to_s
+ end