Filter out nodes which are too far away

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

diff --git a/app/models/old_node.rb b/app/models/old_node.rb
index 4f10e65a5767ed87fa9515a9fe74441d0f0ed0ec..90304acae4c1f9dadbaceaecc37475703648cbdd 100644 (file)
--- a/app/models/old_node.rb
+++ b/app/models/old_node.rb
@@ -1,21 +1,29 @@
-class OldNode < GeoRecord
-  set_table_name 'nodes'
-  
-  validates_presence_of :user_id, :timestamp
+class OldNode < ActiveRecord::Base
+  include GeoRecord
+  include ConsistencyValidations
+  include ObjectMetadata
+
+  self.table_name = "nodes"
+  self.primary_keys = "node_id", "version"
+
+  # note this needs to be included after the table name changes, or
+  # the queries generated by Redactable will use the wrong table name.
+  include Redactable
+
+  validates_presence_of :changeset_id, :timestamp
   validates_inclusion_of :visible, :in => [ true, false ]
   validates_numericality_of :latitude, :longitude
   validate :validate_position
+  validates_associated :changeset
 
-  belongs_to :user
- 
-  def validate_position
-    errors.add_to_base("Node is not in the world") unless in_world?
-  end
+  belongs_to :changeset
+  belongs_to :redaction
+  belongs_to :current_node, :class_name => "Node", :foreign_key => "node_id"
+
+  has_many :old_tags, :class_name => 'OldNodeTag', :foreign_key => [:node_id, :version]
 
-  def in_world?
-    return false if self.lat < -90 or self.lat > 90
-    return false if self.lon < -180 or self.lon > 180
-    return true
+  def validate_position
+    errors.add(:base, "Node is not in the world") unless in_world?
   end
 
   def self.from_node(node)
@@ -25,28 +33,32 @@ class OldNode < GeoRecord
     old_node.visible = node.visible
     old_node.tags = node.tags
     old_node.timestamp = node.timestamp
-    old_node.user_id = node.user_id
-    old_node.id = node.id
+    old_node.changeset_id = node.changeset_id
+    old_node.node_id = node.id
+    old_node.version = node.version
     return old_node
   end
+  
+  def to_xml
+    doc = OSM::API.new.get_xml_doc
+    doc.root << to_xml_node()
+    return doc
+  end
 
-  def to_xml_node
-    el1 = XML::Node.new 'node'
-    el1['id'] = self.id.to_s
-    el1['lat'] = self.lat.to_s
-    el1['lon'] = self.lon.to_s
-    el1['user'] = self.user.display_name if self.user.data_public?
+  def to_xml_node(changeset_cache = {}, user_display_name_cache = {})
+    el = XML::Node.new 'node'
+    el['id'] = self.node_id.to_s
 
-    self.tags.each do |k,v|
-      el2 = XML::Node.new('tag')
-      el2['k'] = k.to_s
-      el2['v'] = v.to_s
-      el1 << el2
+    add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
+
+    if self.visible?
+      el['lat'] = self.lat.to_s
+      el['lon'] = self.lon.to_s
     end
 
-    el1['visible'] = self.visible.to_s
-    el1['timestamp'] = self.timestamp.xmlschema
-    return el1
+    add_tags_to_xml_node(el, self.old_tags)
+
+    return el
   end
 
   def save_with_dependencies!
@@ -55,34 +67,43 @@ class OldNode < GeoRecord
     clear_aggregation_cache
     clear_association_cache
     #ok from here
-    @attributes.update(OldNode.find(:first, :conditions => ['id = ? AND timestamp = ?', self.id, self.timestamp]).instance_variable_get('@attributes'))
+    @attributes.update(OldNode.where(:node_id => self.node_id, :timestamp => self.timestamp, :version => self.version).first.instance_variable_get('@attributes'))
    
-    sequence_id = 1
     self.tags.each do |k,v|
       tag = OldNodeTag.new
       tag.k = k
       tag.v = v
-      tag.id = self.id
+      tag.node_id = self.node_id
       tag.version = self.version
-      tag.sequence_id = sequence_id
       tag.save!
-      sequence_id += 1
     end
   end
 
   def tags
-    unless @tags
-        @tags = Hash.new
-        OldNodeTag.find(:all, :conditions => ["id = ? AND version = ?", self.id, self.version]).each do |tag|
-            @tags[tag.k] = tag.v
-        end
-    end
-    @tags = Hash.new unless @tags
-    @tags
+    @tags ||= Hash[self.old_tags.collect { |t| [t.k, t.v] }]
   end
 
   def tags=(t)
     @tags = t 
+  end
+
+  def tags_as_hash 
+    return self.tags
+  end 
+ 
+  # Pretend we're not in any ways 
+  def ways 
+    return [] 
+  end 
+ 
+  # Pretend we're not in any relations 
+  def containing_relation_members 
+    return [] 
   end 
 
+  # check whether this element is the latest version - that is,
+  # has the same version as its "current" counterpart.
+  def is_latest_version?
+    current_node.version == self.version
+  end
 end