X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/3d0ca940d26bdc23aa791178b01b816185c5a086..59d5b5fa6eb09e159771d170f0831ec49283c91a:/app/models/node.rb

diff --git a/app/models/node.rb b/app/models/node.rb
index e37a10250..e81f798b9 100644
--- a/app/models/node.rb
+++ b/app/models/node.rb
@@ -3,17 +3,18 @@ class Node < ActiveRecord::Base
 
   include GeoRecord
   include ConsistencyValidations
+  include NotRedactable
 
-  set_table_name 'current_nodes'
+  self.table_name = "current_nodes"
 
   belongs_to :changeset
 
-  has_many :old_nodes, :foreign_key => :id
+  has_many :old_nodes, -> { order(:version) }
 
   has_many :way_nodes
   has_many :ways, :through => :way_nodes
 
-  has_many :node_tags, :foreign_key => :id
+  has_many :node_tags
   
   has_many :old_way_nodes
   has_many :ways_via_history, :class_name=> "Way", :through => :old_way_nodes, :source => :way
@@ -30,35 +31,12 @@ class Node < ActiveRecord::Base
   validate :validate_position
   validates_associated :changeset
 
+  scope :visible, -> { where(:visible => true) }
+  scope :invisible, -> { where(:visible => false) }
+
   # Sanity check the latitude and longitude and add an error if it's broken
   def validate_position
-    errors.add_to_base("Node is not in the world") unless in_world?
-  end
-
-  #
-  # Search for nodes matching tags within bounding_box
-  #
-  # Also adheres to limitations such as within max_number_of_nodes
-  #
-  def self.search(bounding_box, tags = {})
-    min_lon, min_lat, max_lon, max_lat = *bounding_box
-    # @fixme a bit of a hack to search for only visible nodes
-    # couldn't think of another to add to tags condition
-    #conditions_hash = tags.merge({ 'visible' => 1 })
-  
-    # using named placeholders http://www.robbyonrails.com/articles/2005/10/21/using-named-placeholders-in-ruby
-    #keys = []
-    #values = {}
-
-    #conditions_hash.each do |key,value|
-    #  keys <<  "#{key} = :#{key}"
-    #  values[key.to_sym] = value
-    #end 
-    #conditions = keys.join(' AND ')
- 
-    find_by_area(min_lat, min_lon, max_lat, max_lon,
-                    :conditions => {:visible => true},
-                    :limit => APP_CONFIG['max_number_of_nodes']+1)  
+    errors.add(:base, "Node is not in the world") unless in_world?
   end
 
   # Read in xml as text and return it's Node object representation
@@ -70,6 +48,7 @@ class Node < ActiveRecord::Base
       doc.find('//osm/node').each do |pt|
         return Node.from_xml_node(pt, create)
       end
+      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
@@ -80,9 +59,9 @@ 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 = pt['lat'].to_f
-    node.lon = pt['lon'].to_f
-    raise OSM::APIBadXMLError.new("node", pt, "changeset id missing") if pt['changeset'].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?
@@ -92,21 +71,25 @@ class Node < ActiveRecord::Base
     node.version = create ? 0 : pt['version'].to_i
 
     unless create
-      if pt['id'] != '0'
-        node.id = pt['id'].to_i
-      end
+      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 == 0
     end
 
-    # visible if it says it is, or as the default if the attribute
-    # is missing.
-    # Don't need to set the visibility, when it is set explicitly in the create/update/delete
-    #node.visible = pt['visible'].nil? or pt['visible'] == 'true'
-
     # We don't care about the time, as it is explicitly set on create/update/delete
+    # We don't care about the visibility as it is implicit based on the action
+    # and set manually before the actual delete
+    node.visible = true
 
-    tags = []
+    # Start with no tags
+    node.tags = Hash.new
 
+    # Add in any tags from the XML
     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
 
@@ -117,7 +100,7 @@ class Node < ActiveRecord::Base
   # the bounding box around a node, which is used for determining the changeset's
   # bounding box
   def bbox
-    [ longitude, latitude, longitude, latitude ]
+    BoundingBox.new(longitude, latitude, longitude, latitude)
   end
 
   # Should probably be renamed delete_from to come in line with update
@@ -130,16 +113,16 @@ class Node < ActiveRecord::Base
     # 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)
-      way = WayNode.find(:first, :joins => :way, 
-                         :conditions => [ "current_ways.visible = ? AND current_way_nodes.node_id = ?", true, self.id ])
-      raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by way #{way.way.id}.") unless way.nil?
+      ways = Way.joins(:way_nodes).where(:visible => true, :current_way_nodes => { :node_id => id }).order(:id)
+      raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by ways #{ways.collect { |w| w.id }.join(",")}.") unless ways.empty?
       
-      rel = RelationMember.find(:first, :joins => :relation, 
-                                :conditions => [ "visible = ? AND member_type='Node' and member_id=? ", true, self.id])
-      raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by relation #{rel.relation.id}.") unless rel.nil?
+      rels = Relation.joins(:relation_members).where(:visible => true, :current_relation_members => { :member_type => "Node", :member_id => id }).order(:id)
+      raise OSM::APIPreconditionFailedError.new("Node #{self.id} is still used by relations #{rels.collect { |r| r.id }.join(",")}.") unless rels.empty?
 
       self.changeset_id = new_node.changeset_id
+      self.tags = {}
       self.visible = false
       
       # update the changeset with the deleted position
@@ -150,25 +133,28 @@ class Node < ActiveRecord::Base
   end
 
   def update_from(new_node, user)
-    check_consistency(self, new_node, user)
-
-    # update changeset first
-    self.changeset_id = new_node.changeset_id
-    self.changeset = new_node.changeset
-
-    # update changeset bbox with *old* position first
-    changeset.update_bbox!(bbox);
-
-    # FIXME logic needs to be double checked
-    self.latitude = new_node.latitude 
-    self.longitude = new_node.longitude
-    self.tags = new_node.tags
-    self.visible = true
-
-    # update changeset bbox with *new* position
-    changeset.update_bbox!(bbox);
-
-    save_with_history!
+    Node.transaction do
+      self.lock!
+      check_consistency(self, new_node, user)
+      
+      # update changeset first
+      self.changeset_id = new_node.changeset_id
+      self.changeset = new_node.changeset
+      
+      # update changeset bbox with *old* position first
+      changeset.update_bbox!(bbox);
+      
+      # FIXME logic needs to be double checked
+      self.latitude = new_node.latitude 
+      self.longitude = new_node.longitude
+      self.tags = new_node.tags
+      self.visible = true
+      
+      # update changeset bbox with *new* position
+      changeset.update_bbox!(bbox);
+      
+      save_with_history!
+    end
   end
   
   def create_with_history(user)
@@ -191,11 +177,14 @@ class Node < ActiveRecord::Base
   def to_xml_node(changeset_cache = {}, user_display_name_cache = {})
     el1 = XML::Node.new 'node'
     el1['id'] = self.id.to_s
-    el1['lat'] = self.lat.to_s
-    el1['lon'] = self.lon.to_s
     el1['version'] = self.version.to_s
     el1['changeset'] = self.changeset_id.to_s
 
+    if self.visible?
+      el1['lat'] = self.lat.to_s
+      el1['lon'] = self.lon.to_s
+    end
+
     if changeset_cache.key?(self.changeset_id)
       # use the cache if available
     else
@@ -282,12 +271,12 @@ class Node < ActiveRecord::Base
 
       # Create a NodeTag
       tags = self.tags
-      NodeTag.delete_all(['id = ?', self.id])
+      NodeTag.delete_all(:node_id => self.id)
       tags.each do |k,v|
         tag = NodeTag.new
+        tag.node_id = self.id
         tag.k = k 
         tag.v = v 
-        tag.id = self.id
         tag.save!
       end