X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/65eb6af30377bb98a0da691f69d3ad9b68b831e2..34e3e51456774127d43408b7ab65c24f41373f62:/app/models/way.rb

diff --git a/app/models/way.rb b/app/models/way.rb
index 8788bd671..c105fa089 100644
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -1,21 +1,23 @@
 class Way < ActiveRecord::Base
   require 'xml/libxml'
-  
+
   include ConsistencyValidations
+  include NotRedactable
+  include ObjectMetadata
+
+  self.table_name = "current_ways"
 
-  set_table_name 'current_ways'
-  
   belongs_to :changeset
 
-  has_many :old_ways, :foreign_key => 'id', :order => 'version'
+  has_many :old_ways, -> { order(:version) }
 
-  has_many :way_nodes, :foreign_key => 'id', :order => 'sequence_id'
-  has_many :nodes, :through => :way_nodes, :order => 'sequence_id'
+  has_many :way_nodes, -> { order(:sequence_id) }
+  has_many :nodes, :through => :way_nodes
 
-  has_many :way_tags, :foreign_key => 'id'
+  has_many :way_tags
 
   has_many :containing_relation_members, :class_name => "RelationMember", :as => :member
-  has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation, :extend => ObjectFinder
+  has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation
 
   validates_presence_of :id, :on => :update
   validates_presence_of :changeset_id,:version,  :timestamp
@@ -25,6 +27,9 @@ class Way < ActiveRecord::Base
   validates_numericality_of :id, :on => :update, :integer_only => true
   validates_associated :changeset
 
+  scope :visible, -> { where(:visible => true) }
+  scope :invisible, -> { where(:visible => false) }
+
   # Read in xml as text and return it's Way object representation
   def self.from_xml(xml, create=false)
     begin
@@ -34,6 +39,7 @@ class Way < ActiveRecord::Base
       doc.find('//osm/way').each do |pt|
         return Way.from_xml_node(pt, create)
       end
+      raise OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/way element.")
     rescue LibXML::XML::Error, ArgumentError => ex
       raise OSM::APIBadXMLError.new("way", xml, ex.message)
     end
@@ -50,16 +56,20 @@ class Way < ActiveRecord::Base
     unless create
       raise OSM::APIBadXMLError.new("way", pt, "ID is required when updating") if pt['id'].nil?
       way.id = pt['id'].to_i
-      # .to_i will return 0 if there is no number that can be parsed. 
+      # .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 way cannot be zero when updating.") if way.id == 0
     end
 
     # We don't care about the timestamp nor the visibility as these are either
-    # set explicitly or implicit in the action. The visibility is set to true, 
+    # set explicitly or implicit in the action. The visibility is set to true,
     # and manually set to false before the actual delete.
     way.visible = true
 
+    # Start with no tags
+    way.tags = Hash.new
+
+    # Add in any tags from the XML
     pt.find('tag').each do |tag|
       raise OSM::APIBadXMLError.new("way", pt, "tag is missing key") if tag['k'].nil?
       raise OSM::APIBadXMLError.new("way", pt, "tag is missing value") if tag['v'].nil?
@@ -75,7 +85,7 @@ class Way < ActiveRecord::Base
 
   # Find a way given it's ID, and in a single SQL call also grab its nodes
   #
-  
+
   # You can't pull in all the tags too unless we put a sequence_id on the way_tags table and have a multipart key
   def self.find_eager(id)
     way = Way.find(id, :include => {:way_nodes => :node})
@@ -91,33 +101,10 @@ class Way < ActiveRecord::Base
   end
 
   def to_xml_node(visible_nodes = nil, changeset_cache = {}, user_display_name_cache = {})
-    el1 = XML::Node.new 'way'
-    el1['id'] = self.id.to_s
-    el1['visible'] = self.visible.to_s
-    el1['timestamp'] = self.timestamp.xmlschema
-    el1['version'] = self.version.to_s
-    el1['changeset'] = self.changeset_id.to_s
-
-    if changeset_cache.key?(self.changeset_id)
-      # use the cache if available
-    else
-      changeset_cache[self.changeset_id] = self.changeset.user_id
-    end
+    el = XML::Node.new 'way'
+    el['id'] = self.id.to_s
 
-    user_id = changeset_cache[self.changeset_id]
-
-    if user_display_name_cache.key?(user_id)
-      # use the cache if available
-    elsif self.changeset.user.data_public?
-      user_display_name_cache[user_id] = self.changeset.user.display_name
-    else
-      user_display_name_cache[user_id] = nil
-    end
-
-    if not user_display_name_cache[user_id].nil?
-      el1['user'] = user_display_name_cache[user_id]
-      el1['uid'] = user_id.to_s
-    end
+    add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
 
     # make sure nodes are output in sequence_id order
     ordered_nodes = []
@@ -137,39 +124,23 @@ class Way < ActiveRecord::Base
 
     ordered_nodes.each do |nd_id|
       if nd_id and nd_id != '0'
-        e = XML::Node.new 'nd'
-        e['ref'] = nd_id
-        el1 << e
+        node_el = XML::Node.new 'nd'
+        node_el['ref'] = nd_id
+        el << node_el
       end
     end
 
-    self.way_tags.each do |tag|
-      e = XML::Node.new 'tag'
-      e['k'] = tag.k
-      e['v'] = tag.v
-      el1 << e
-    end
-    return el1
-  end 
+    add_tags_to_xml_node(el, self.way_tags)
+
+    return el
+  end
 
   def nds
-    unless @nds
-      @nds = Array.new
-      self.way_nodes.each do |nd|
-        @nds += [nd.node_id]
-      end
-    end
-    @nds
+    @nds ||= self.way_nodes.collect { |n| n.node_id }
   end
 
   def tags
-    unless @tags
-      @tags = {}
-      self.way_tags.each do |tag|
-        @tags[tag.k] = tag.v
-      end
-    end
-    @tags
+    @tags ||= Hash[self.way_tags.collect { |t| [t.k, t.v] }]
   end
 
   def nds=(s)
@@ -201,7 +172,7 @@ class Way < ActiveRecord::Base
   def bbox
     lons = nodes.collect { |n| n.longitude }
     lats = nodes.collect { |n| n.latitude }
-    [ lons.min, lats.min, lons.max, lats.max ]
+    BoundingBox.new(lons.min, lats.min, lons.max, lats.max)
   end
 
   def update_from(new_way, user)
@@ -211,7 +182,7 @@ class Way < ActiveRecord::Base
       unless new_way.preconditions_ok?(self.nds)
         raise OSM::APIPreconditionFailedError.new("Cannot update way #{self.id}: data is invalid.")
       end
-      
+
       self.changeset_id = new_way.changeset_id
       self.changeset = new_way.changeset
       self.tags = new_way.tags
@@ -233,8 +204,8 @@ class Way < ActiveRecord::Base
 
   def preconditions_ok?(old_nodes = [])
     return false if self.nds.empty?
-    if self.nds.length > APP_CONFIG['max_number_of_way_nodes']
-      raise OSM::APITooManyWayNodesError.new(self.nds.length, APP_CONFIG['max_number_of_way_nodes'])
+    if self.nds.length > MAX_NUMBER_OF_WAY_NODES
+      raise OSM::APITooManyWayNodesError.new(self.id, self.nds.length, MAX_NUMBER_OF_WAY_NODES)
     end
 
     # check only the new nodes, for efficiency - old nodes having been checked last time and can't
@@ -242,7 +213,7 @@ class Way < ActiveRecord::Base
     new_nds = (self.nds - old_nodes).sort.uniq
 
     unless new_nds.empty?
-      db_nds = Node.find(:all, :conditions => { :id => new_nds, :visible => true })
+      db_nds = Node.where(:id => new_nds, :visible => true)
 
       if db_nds.length < new_nds.length
         missing = new_nds - db_nds.collect { |n| n.id }
@@ -257,17 +228,16 @@ class Way < ActiveRecord::Base
     unless self.visible
       raise OSM::APIAlreadyDeletedError.new("way", new_way.id)
     end
-    
-    # need to start the transaction here, so that the database can 
+
+    # 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.
     Way.transaction do
       self.lock!
       check_consistency(self, new_way, user)
-      rel = RelationMember.find(:first, :joins => :relation,
-                             :conditions => [ "visible = ? AND member_type='Way' and member_id=? ", true, self.id])
-      raise OSM::APIPreconditionFailedError.new("Way #{self.id} still used by relation #{rel.relation.id}.") if rel
-      
+      rels = Relation.joins(:relation_members).where(:visible => true, :current_relation_members => { :member_type => "Way", :member_id => id }).order(:id)
+      raise OSM::APIPreconditionFailedError.new("Way #{self.id} is still used by relations #{rels.collect { |r| r.id }.join(",")}.") unless rels.empty?
+
       self.changeset_id = new_way.changeset_id
       self.changeset = new_way.changeset
 
@@ -285,8 +255,8 @@ class Way < ActiveRecord::Base
 
   ##
   # if any referenced nodes are placeholder IDs (i.e: are negative) then
-  # this calling this method will fix them using the map from placeholders 
-  # to IDs +id_map+. 
+  # this calling this method will fix them using the map from placeholders
+  # to IDs +id_map+.
   def fix_placeholders!(id_map, placeholder_id = nil)
     self.nds.map! do |node_id|
       if node_id < 0
@@ -300,12 +270,12 @@ class Way < ActiveRecord::Base
   end
 
   private
-  
+
   def save_with_history!
     t = Time.now.getutc
 
-    # update the bounding box, note that this has to be done both before 
-    # and after the save, so that nodes from both versions are included in the 
+    # update the bounding box, note that this has to be done both before
+    # and after the save, so that nodes from both versions are included in the
     # bbox. we use a copy of the changeset so that it isn't reloaded
     # later in the save.
     cs = self.changeset
@@ -317,17 +287,17 @@ class Way < ActiveRecord::Base
       self.save!
 
       tags = self.tags
-      WayTag.delete_all(['id = ?', self.id])
+      WayTag.delete_all(:way_id => self.id)
       tags.each do |k,v|
         tag = WayTag.new
+        tag.way_id = self.id
         tag.k = k
         tag.v = v
-        tag.id = self.id
         tag.save!
       end
 
       nds = self.nds
-      WayNode.delete_all(['id = ?', self.id])
+      WayNode.delete_all(:way_id => self.id)
       sequence = 1
       nds.each do |n|
         nd = WayNode.new
@@ -345,7 +315,7 @@ class Way < ActiveRecord::Base
       # new set of nodes.
       self.reload
 
-      # update and commit the bounding box, now that way nodes 
+      # update and commit the bounding box, now that way nodes
       # have been updated and we're in a transaction.
       cs.update_bbox!(bbox) unless nodes.empty?
 
@@ -355,5 +325,4 @@ class Way < ActiveRecord::Base
       cs.save!
     end
   end
-
 end