+ scope :visible, -> { where(:visible => true) }
+ scope :invisible, -> { where(:visible => false) }
+
+ # Read in xml as text and return it's Way object representation
+ def self.from_xml(xml, create = false)
+ p = XML::Parser.string(xml)
+ doc = p.parse
+
+ doc.find('//osm/way').each do |pt|
+ return Way.from_xml_node(pt, create)
+ end
+ fail OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/way element.")
+ rescue LibXML::XML::Error, ArgumentError => ex
+ raise OSM::APIBadXMLError.new("way", xml, ex.message)
+ end
+
+ def self.from_xml_node(pt, create = false)
+ way = Way.new
+
+ fail OSM::APIBadXMLError.new("way", pt, "Version is required when updating") unless create || !pt['version'].nil?
+ way.version = pt['version']
+ fail OSM::APIBadXMLError.new("way", pt, "Changeset id is missing") if pt['changeset'].nil?
+ way.changeset_id = pt['changeset']
+
+ unless create
+ fail OSM::APIBadXMLError.new("way", pt, "ID is required when updating") if pt['id'].nil?
+ way.id = pt['id'].to_i
+ # .to_i will return 0 if there is no number that can be parsed.
+ # We want to make sure that there is no id with zero anyway
+ fail OSM::APIBadUserInput.new("ID of way cannot be zero when updating.") if way.id == 0
+ end
+
+ # We don't care about the timestamp nor the visibility as these are either
+ # set explicitly or implicit in the action. The visibility is set to true,
+ # and manually set to false before the actual delete.
+ way.visible = true
+
+ # Start with no tags
+ way.tags = {}
+
+ # Add in any tags from the XML
+ pt.find('tag').each do |tag|
+ fail OSM::APIBadXMLError.new("way", pt, "tag is missing key") if tag['k'].nil?
+ fail OSM::APIBadXMLError.new("way", pt, "tag is missing value") if tag['v'].nil?
+ way.add_tag_keyval(tag['k'], tag['v'])