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[rails.git] / app / models / node.rb

diff --git a/app/models/node.rb b/app/models/node.rb
index ec899fa89814b8820e8f09dfef92d32e9b7bbbb4..989cdee5cd20cc4a5b86d910cfedd9d54eda79ca 100644 (file)
--- 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"
 
 class Node < ActiveRecord::Base
   require "xml/libxml"
 


@@ -23,14 +46,21 @@ 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
 
   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, :integer_only => true }
+  validates :version, :presence => true,
+                      :numericality => { :integer_only => true }
+  validates :changeset_id, :presence => true,
+                           :numericality => { :integer_only => true }
+  validates :latitude, :presence => true,
+                       :numericality => { :integer_only => true }
+  validates :longitude, :presence => true,
+                        :numericality => { :integer_only => true }
+  validates :timestamp, :presence => true
+  validates :changeset, :associated => true
+  validates :visible, :inclusion => [true, false]
+

   validate :validate_position
   validate :validate_position

-  validates_associated :changeset

 
   scope :visible, -> { where(:visible => true) }
   scope :invisible, -> { where(:visible => false) }
 
   scope :visible, -> { where(:visible => true) }
   scope :invisible, -> { where(:visible => false) }


@@ -42,13 +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)
 
   # 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
     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
   rescue LibXML::XML::Error, ArgumentError => ex
     raise OSM::APIBadXMLError.new("node", xml, ex.message)
   end


@@ -56,25 +86,29 @@ class Node < ActiveRecord::Base
   def self.from_xml_node(pt, create = false)
     node = Node.new
 
   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")
     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
 
     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
 
     # 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
     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
       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
     end
 
     # We don't care about the time, as it is explicitly set on create/update/delete


@@ -87,8 +121,9 @@ class Node < ActiveRecord::Base
 
     # Add in any tags from the XML
     pt.find("tag").each do |tag|
 
     # 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
 
       node.add_tag_key_val(tag["k"], tag["v"])
     end
 


@@ -104,19 +139,19 @@ class Node < ActiveRecord::Base
 
   # Should probably be renamed delete_from to come in line with update
   def delete_with_history!(new_node, user)
 
   # 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
 
     # 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)
       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)
 
       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 = {}
 
       self.changeset_id = new_node.changeset_id
       self.tags = {}


@@ -131,7 +166,7 @@ class Node < ActiveRecord::Base
 
   def update_from(new_node, user)
     Node.transaction do
 
   def update_from(new_node, user)
     Node.transaction do

-      self.lock!
+      lock!

       check_consistency(self, new_node, user)
 
       # update changeset first
       check_consistency(self, new_node, user)
 
       # update changeset first


@@ -177,7 +212,7 @@ class Node < ActiveRecord::Base
 
     add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
 
 
     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
       el["lat"] = lat.to_s
       el["lon"] = lon.to_s
     end


@@ -198,11 +233,11 @@ class Node < ActiveRecord::Base
   attr_writer :tags
 
   def add_tag_key_val(k, v)
   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.
 
     # 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
 
     @tags[k] = v
   end


@@ -225,14 +260,18 @@ class Node < ActiveRecord::Base
 
   def save_with_history!
     t = Time.now.getutc
 
   def save_with_history!
     t = Time.now.getutc

+
+    self.version += 1
+    self.timestamp = t
+

     Node.transaction do
     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
 
       # 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
       tags.each do |k, v|
         tag = NodeTag.new
         tag.node_id = id