X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/3e9b6845d34f9cd80f9eb1099f76f7801bfae76f..8ae5d94b2f16d6f2cf1739e19ebc3793a18a0a4a:/app/models/node.rb diff --git a/app/models/node.rb b/app/models/node.rb index 2c25bbd14..8f154b473 100644 --- a/app/models/node.rb +++ b/app/models/node.rb @@ -8,7 +8,7 @@ class Node < ActiveRecord::Base belongs_to :changeset - has_many :old_nodes, :foreign_key => :id + has_many :old_nodes, :foreign_key => :id, :order => :version has_many :way_nodes has_many :ways, :through => :way_nodes @@ -30,9 +30,12 @@ class Node < ActiveRecord::Base validate :validate_position validates_associated :changeset + scope :visible, where(:visible => true) + scope :invisible, where(:visible => false) + # Sanity check the latitude and longitude and add an error if it's broken def validate_position - errors.add_to_base("Node is not in the world") unless in_world? + errors.add(:base, "Node is not in the world") unless in_world? end # @@ -58,7 +61,7 @@ class Node < ActiveRecord::Base find_by_area(min_lat, min_lon, max_lat, max_lon, :conditions => {:visible => true}, - :limit => APP_CONFIG['max_number_of_nodes']+1) + :limit => MAX_NUMBER_OF_NODES+1) end # Read in xml as text and return it's Node object representation @@ -70,6 +73,7 @@ class Node < ActiveRecord::Base doc.find('//osm/node').each do |pt| return Node.from_xml_node(pt, create) end + raise OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/node element.") rescue LibXML::XML::Error, ArgumentError => ex raise OSM::APIBadXMLError.new("node", xml, ex.message) end @@ -82,7 +86,7 @@ class Node < ActiveRecord::Base raise OSM::APIBadXMLError.new("node", pt, "lon missing") if pt['lon'].nil? node.lat = pt['lat'].to_f node.lon = pt['lon'].to_f - raise OSM::APIBadXMLError.new("node", pt, "changeset id missing") if pt['changeset'].nil? + raise OSM::APIBadXMLError.new("node", pt, "Changeset id is missing") if pt['changeset'].nil? node.changeset_id = pt['changeset'].to_i raise OSM::APIBadUserInput.new("The node is outside this world") unless node.in_world? @@ -92,21 +96,21 @@ class Node < ActiveRecord::Base node.version = create ? 0 : pt['version'].to_i unless create - if pt['id'] != '0' - node.id = pt['id'].to_i - end + raise OSM::APIBadXMLError.new("node", pt, "ID is required when updating.") if pt['id'].nil? + node.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 + raise OSM::APIBadUserInput.new("ID of node cannot be zero when updating.") if node.id == 0 end - # visible if it says it is, or as the default if the attribute - # is missing. - # Don't need to set the visibility, when it is set explicitly in the create/update/delete - #node.visible = pt['visible'].nil? or pt['visible'] == 'true' - # We don't care about the time, as it is explicitly set on create/update/delete - - tags = [] + # We don't care about the visibility as it is implicit based on the action + # and set manually before the actual delete + node.visible = true pt.find('tag').each do |tag| + raise OSM::APIBadXMLError.new("node", pt, "tag is missing key") if tag['k'].nil? + raise OSM::APIBadXMLError.new("node", pt, "tag is missing value") if tag['v'].nil? node.add_tag_key_val(tag['k'],tag['v']) end @@ -130,16 +134,16 @@ class Node < ActiveRecord::Base # provide repeatable reads for the used-by checks. this means it # shouldn't be possible to get race conditions. Node.transaction do + self.lock! check_consistency(self, new_node, user) - way = WayNode.find(:first, :joins => "INNER JOIN current_ways ON current_ways.id = current_way_nodes.id", - :conditions => [ "current_ways.visible = ? AND current_way_nodes.node_id = ?", true, self.id ]) - raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by way #{way.id}.") unless way.nil? + ways = Way.joins(:way_nodes).where(:visible => true, :current_way_nodes => { :node_id => id }).order(:id) + raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by ways #{ways.collect { |w| w.id }.join(",")}.") unless ways.empty? - rel = RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", - :conditions => [ "visible = ? AND member_type='Node' and member_id=? ", true, self.id]) - raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by relation #{rel.id}.") unless rel.nil? + rels = Relation.joins(:relation_members).where(:visible => true, :current_relation_members => { :member_type => "Node", :member_id => id }).order(:id) + raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by relations #{rels.collect { |r| r.id }.join(",")}.") unless rels.empty? self.changeset_id = new_node.changeset_id + self.tags = {} self.visible = false # update the changeset with the deleted position @@ -150,25 +154,28 @@ class Node < ActiveRecord::Base end def update_from(new_node, user) - check_consistency(self, new_node, user) - - # update changeset first - self.changeset_id = new_node.changeset_id - self.changeset = new_node.changeset - - # update changeset bbox with *old* position first - changeset.update_bbox!(bbox); - - # FIXME logic needs to be double checked - self.latitude = new_node.latitude - self.longitude = new_node.longitude - self.tags = new_node.tags - self.visible = true - - # update changeset bbox with *new* position - changeset.update_bbox!(bbox); - - save_with_history! + Node.transaction do + self.lock! + check_consistency(self, new_node, user) + + # update changeset first + self.changeset_id = new_node.changeset_id + self.changeset = new_node.changeset + + # update changeset bbox with *old* position first + changeset.update_bbox!(bbox); + + # FIXME logic needs to be double checked + self.latitude = new_node.latitude + self.longitude = new_node.longitude + self.tags = new_node.tags + self.visible = true + + # update changeset bbox with *new* position + changeset.update_bbox!(bbox); + + save_with_history! + end end def create_with_history(user)