X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/9a9b045372a6f48420a9a6dacfde52c34ab7abce..2ab3d56102661f31cc41ef3edca5d72f904a3070:/app/models/node.rb diff --git a/app/models/node.rb b/app/models/node.rb index f1a89e0e2..c09fcbd67 100644 --- a/app/models/node.rb +++ b/app/models/node.rb @@ -1,3 +1,26 @@ +# == Schema Information +# +# Table name: current_nodes +# +# id :integer not null, primary key +# latitude :integer not null +# longitude :integer not null +# changeset_id :integer not null +# visible :boolean not null +# timestamp :datetime not null +# tile :integer not null +# version :integer not null +# +# Indexes +# +# current_nodes_tile_idx (tile) +# current_nodes_timestamp_idx (timestamp) +# +# Foreign Keys +# +# current_nodes_changeset_id_fkey (changeset_id => changesets.id) +# + class Node < ActiveRecord::Base require "xml/libxml" @@ -49,13 +72,13 @@ class Node < ActiveRecord::Base # Read in xml as text and return it's Node object representation def self.from_xml(xml, create = false) - p = XML::Parser.string(xml) + p = XML::Parser.string(xml, :options => XML::Parser::Options::NOERROR) doc = p.parse doc.find("//osm/node").each do |pt| return Node.from_xml_node(pt, create) end - fail OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/node element.") + 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 @@ -63,25 +86,25 @@ class Node < ActiveRecord::Base def self.from_xml_node(pt, create = false) node = Node.new - fail OSM::APIBadXMLError.new("node", pt, "lat missing") if pt["lat"].nil? - fail OSM::APIBadXMLError.new("node", pt, "lon missing") if pt["lon"].nil? + raise OSM::APIBadXMLError.new("node", pt, "lat missing") if pt["lat"].nil? + raise OSM::APIBadXMLError.new("node", pt, "lon missing") if pt["lon"].nil? node.lat = OSM.parse_float(pt["lat"], OSM::APIBadXMLError, "node", pt, "lat not a number") node.lon = OSM.parse_float(pt["lon"], OSM::APIBadXMLError, "node", pt, "lon not a number") - fail OSM::APIBadXMLError.new("node", pt, "Changeset id is 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 - fail OSM::APIBadUserInput.new("The node is outside this world") unless node.in_world? + raise OSM::APIBadUserInput, "The node is outside this world" unless node.in_world? # version must be present unless creating - fail OSM::APIBadXMLError.new("node", pt, "Version is required when updating") unless create || !pt["version"].nil? + raise OSM::APIBadXMLError.new("node", pt, "Version is required when updating") unless create || !pt["version"].nil? node.version = create ? 0 : pt["version"].to_i unless create - fail OSM::APIBadXMLError.new("node", pt, "ID is required when updating.") if pt["id"].nil? + 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 - fail OSM::APIBadUserInput.new("ID of node cannot be zero when updating.") if node.id == 0 + raise OSM::APIBadUserInput, "ID of node cannot be zero when updating." if node.id.zero? end # We don't care about the time, as it is explicitly set on create/update/delete @@ -94,8 +117,8 @@ class Node < ActiveRecord::Base # Add in any tags from the XML pt.find("tag").each do |tag| - fail OSM::APIBadXMLError.new("node", pt, "tag is missing key") if tag["k"].nil? - fail OSM::APIBadXMLError.new("node", pt, "tag is missing value") if tag["v"].nil? + 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 @@ -111,19 +134,19 @@ class Node < ActiveRecord::Base # Should probably be renamed delete_from to come in line with update def delete_with_history!(new_node, user) - fail OSM::APIAlreadyDeletedError.new("node", new_node.id) unless visible + raise OSM::APIAlreadyDeletedError.new("node", new_node.id) unless visible # need to start the transaction here, so that the database can # provide repeatable reads for the used-by checks. this means it # shouldn't be possible to get race conditions. Node.transaction do - self.lock! + lock! check_consistency(self, new_node, user) ways = Way.joins(:way_nodes).where(:visible => true, :current_way_nodes => { :node_id => id }).order(:id) - fail OSM::APIPreconditionFailedError.new("Node #{id} is still used by ways #{ways.collect(&:id).join(",")}.") unless ways.empty? + raise OSM::APIPreconditionFailedError, "Node #{id} is still used by ways #{ways.collect(&:id).join(',')}." unless ways.empty? rels = Relation.joins(:relation_members).where(:visible => true, :current_relation_members => { :member_type => "Node", :member_id => id }).order(:id) - fail OSM::APIPreconditionFailedError.new("Node #{id} is still used by relations #{rels.collect(&:id).join(",")}.") unless rels.empty? + raise OSM::APIPreconditionFailedError, "Node #{id} is still used by relations #{rels.collect(&:id).join(',')}." unless rels.empty? self.changeset_id = new_node.changeset_id self.tags = {} @@ -138,7 +161,7 @@ class Node < ActiveRecord::Base def update_from(new_node, user) Node.transaction do - self.lock! + lock! check_consistency(self, new_node, user) # update changeset first @@ -184,7 +207,7 @@ class Node < ActiveRecord::Base add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache) - if self.visible? + if visible? el["lat"] = lat.to_s el["lon"] = lon.to_s end @@ -205,11 +228,11 @@ class Node < ActiveRecord::Base attr_writer :tags def add_tag_key_val(k, v) - @tags = {} unless @tags + @tags ||= {} # duplicate tags are now forbidden, so we can't allow values # in the hash to be overwritten. - fail OSM::APIDuplicateTagsError.new("node", id, k) if @tags.include? k + raise OSM::APIDuplicateTagsError.new("node", id, k) if @tags.include? k @tags[k] = v end @@ -232,14 +255,18 @@ class Node < ActiveRecord::Base def save_with_history! t = Time.now.getutc + + self.version += 1 + self.timestamp = t + Node.transaction do - self.version += 1 - self.timestamp = t - self.save! + # clone the object before saving it so that the original is + # still marked as dirty if we retry the transaction + clone.save! # Create a NodeTag tags = self.tags - NodeTag.delete_all(:node_id => id) + NodeTag.where(:node_id => id).delete_all tags.each do |k, v| tag = NodeTag.new tag.node_id = id