X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/037585db3933a2954b43bd4b30ea5e30ade00be2..1276fb944a8024884f3121d21577ef892353dfd1:/app/models/node.rb

diff --git a/app/models/node.rb b/app/models/node.rb
index f1a89e0e2..825336d16 100644
--- a/app/models/node.rb
+++ b/app/models/node.rb
@@ -1,16 +1,38 @@
-class Node < ActiveRecord::Base
+# == 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
@@ -24,15 +46,13 @@ class Node < ActiveRecord::Base
   has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation
 
   validates :id, :uniqueness => true, :presence => { :on => :update },
-                 :numericality => { :on => :update, :integer_only => true }
+                 :numericality => { :on => :update, :only_integer => true }
   validates :version, :presence => true,
-                      :numericality => { :integer_only => true }
-  validates :changeset_id, :presence => true,
-                           :numericality => { :integer_only => true }
+                      :numericality => { :only_integer => true }
   validates :latitude, :presence => true,
-                       :numericality => { :integer_only => true }
+                       :numericality => { :only_integer => true }
   validates :longitude, :presence => true,
-                        :numericality => { :integer_only => true }
+                        :numericality => { :only_integer => true }
   validates :timestamp, :presence => true
   validates :changeset, :associated => true
   validates :visible, :inclusion => [true, false]
@@ -48,40 +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?
+    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 +120,9 @@ 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 +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)
-    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!
-      check_consistency(self, new_node, user)
+      lock!
+      check_update_element_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 = {}
@@ -138,8 +165,8 @@ class Node < ActiveRecord::Base
 
   def update_from(new_node, user)
     Node.transaction do
-      self.lock!
-      check_consistency(self, new_node, user)
+      lock!
+      check_update_element_consistency(self, new_node, user)
 
       # update changeset first
       self.changeset_id = new_node.changeset_id
@@ -162,7 +189,7 @@ class Node < ActiveRecord::Base
   end
 
   def create_with_history(user)
-    check_create_consistency(self, user)
+    check_create_element_consistency(self, user)
     self.version = 0
     self.visible = true
 
@@ -172,44 +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
@@ -231,15 +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