X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/ef7f3d800cbdd49b692df10d312e5fd880e2e938..ab4de87d1eef4546a96738154cf81b7d7f72d988:/app/models/node.rb diff --git a/app/models/node.rb b/app/models/node.rb index 7d2219d75..ad4318487 100644 --- a/app/models/node.rb +++ b/app/models/node.rb @@ -1,16 +1,38 @@ -class Node < ActiveRecord::Base - require 'xml/libxml' +# == Schema Information +# +# Table name: current_nodes +# +# id :bigint(8) not null, primary key +# latitude :integer not null +# longitude :integer not null +# changeset_id :bigint(8) not null +# visible :boolean not null +# timestamp :datetime not null +# tile :bigint(8) not null +# version :bigint(8) 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 < ApplicationRecord + require "xml/libxml" include GeoRecord include ConsistencyValidations include NotRedactable - include ObjectMetadata self.table_name = "current_nodes" belongs_to :changeset - has_many :old_nodes, -> { order(:version) } + has_many :old_nodes, -> { order(:version) }, :inverse_of => :current_node has_many :way_nodes has_many :ways, :through => :way_nodes @@ -23,14 +45,19 @@ class Node < ActiveRecord::Base has_many :containing_relation_members, :class_name => "RelationMember", :as => :member has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation - validates_presence_of :id, :on => :update - validates_presence_of :timestamp, :version, :changeset_id - validates_uniqueness_of :id - validates_inclusion_of :visible, :in => [true, false] - validates_numericality_of :latitude, :longitude, :changeset_id, :version, :integer_only => true - validates_numericality_of :id, :on => :update, :integer_only => true + validates :id, :uniqueness => true, :presence => { :on => :update }, + :numericality => { :on => :update, :only_integer => true } + validates :version, :presence => true, + :numericality => { :only_integer => true } + validates :latitude, :presence => true, + :numericality => { :only_integer => true } + validates :longitude, :presence => true, + :numericality => { :only_integer => true } + validates :timestamp, :presence => true + validates :changeset, :associated => true + validates :visible, :inclusion => [true, false] + validate :validate_position - validates_associated :changeset scope :visible, -> { where(:visible => true) } scope :invisible, -> { where(:visible => false) } @@ -41,40 +68,46 @@ class Node < ActiveRecord::Base end # Read in xml as text and return it's Node object representation - def self.from_xml(xml, create = false) - p = XML::Parser.string(xml) + def self.from_xml(xml, create: false) + p = XML::Parser.string(xml, :options => XML::Parser::Options::NOERROR) doc = p.parse + pt = doc.find_first("//osm/node") - doc.find('//osm/node').each do |pt| - return Node.from_xml_node(pt, create) + if pt + Node.from_xml_node(pt, :create => create) + else + raise OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/node element.") end - fail 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) + rescue LibXML::XML::Error, ArgumentError => e + raise OSM::APIBadXMLError.new("node", xml, e.message) end - def self.from_xml_node(pt, create = false) + 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? - 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? - node.changeset_id = pt['changeset'].to_i + 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") + 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? - node.version = create ? 0 : pt['version'].to_i + 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? - node.id = pt['id'].to_i + 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 @@ -86,10 +119,11 @@ class Node < ActiveRecord::Base node.tags = {} # 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? - node.add_tag_key_val(tag['k'], tag['v']) + 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 node @@ -104,21 +138,19 @@ class Node < ActiveRecord::Base # Should probably be renamed delete_from to come in line with update def delete_with_history!(new_node, user) - unless visible - fail OSM::APIAlreadyDeletedError.new("node", new_node.id) - end + 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 = {} @@ -133,7 +165,7 @@ 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 @@ -143,7 +175,7 @@ class Node < ActiveRecord::Base # update changeset bbox with *old* position first changeset.update_bbox!(bbox) - # FIXME logic needs to be double checked + # FIXME: logic needs to be double checked self.latitude = new_node.latitude self.longitude = new_node.longitude self.tags = new_node.tags @@ -167,44 +199,22 @@ class Node < ActiveRecord::Base save_with_history! end - def to_xml - doc = OSM::API.new.get_xml_doc - doc.root << to_xml_node - doc - end - - def to_xml_node(changeset_cache = {}, user_display_name_cache = {}) - el = XML::Node.new 'node' - el['id'] = id.to_s - - add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache) - - if self.visible? - el['lat'] = lat.to_s - el['lon'] = lon.to_s - end - - add_tags_to_xml_node(el, node_tags) - - el - end - def tags_as_hash tags end def tags - @tags ||= Hash[node_tags.collect { |t| [t.k, t.v] }] + @tags ||= node_tags.to_h { |t| [t.k, t.v] } end 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 @@ -226,15 +236,19 @@ class Node < ActiveRecord::Base private def save_with_history! - t = Time.now.getutc + t = Time.now.utc + + 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