X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/20aa4ba31b61a926c8fcb98f88c02f7d1cbeb655..5b062f03151021fd00af77b8e9e888c8a6950384:/app/models/node.rb

diff --git a/app/models/node.rb b/app/models/node.rb
index 2a64259c1..989cdee5c 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"
 
@@ -65,23 +88,27 @@ class Node < ActiveRecord::Base
 
     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
 
-    raise 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
     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
       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.zero?
+      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
@@ -96,6 +123,7 @@ class Node < ActiveRecord::Base
     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
 
@@ -120,10 +148,10 @@ class Node < ActiveRecord::Base
       lock!
       check_consistency(self, new_node, user)
       ways = Way.joins(:way_nodes).where(:visible => true, :current_way_nodes => { :node_id => id }).order(:id)
-      raise 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)
-      raise 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 = {}
@@ -205,7 +233,7 @@ 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.
@@ -232,14 +260,18 @@ 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
-      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