X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/137509534304be853ab01ca554111c524a9a1bca..d9c6758ee6184692fd4219befe13adf6dfa6e32b:/app/models/way.rb

diff --git a/app/models/way.rb b/app/models/way.rb
index e2e1ae302..d6aa12af1 100644
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -34,8 +34,8 @@ class Way < ActiveRecord::Base
       doc.find('//osm/way').each do |pt|
         return Way.from_xml_node(pt, create)
       end
-    rescue
-      return nil
+    rescue LibXML::XML::Error => ex
+      raise OSM::APIBadXMLError.new("way", xml, ex.message)
     end
   end
 
@@ -182,7 +182,7 @@ class Way < ActiveRecord::Base
 
     # duplicate tags are now forbidden, so we can't allow values
     # in the hash to be overwritten.
-    raise OSM::APIDuplicateTagsError.new if @tags.include? k
+    raise OSM::APIDuplicateTagsError.new("way", self.id, k) if @tags.include? k
 
     @tags[k] = v
   end
@@ -283,8 +283,15 @@ class Way < ActiveRecord::Base
   end
 
   def delete_with_history!(new_way, user)
-    check_consistency(self, new_way, user)
-    if self.visible
+    unless self.visible
+      raise OSM::APIAlreadyDeletedError
+    end
+    
+    # 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
+      check_consistency(self, new_way, user)
       if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id",
                              :conditions => [ "visible = ? AND member_type='way' and member_id=? ", true, self.id])
         raise OSM::APIPreconditionFailedError
@@ -295,8 +302,6 @@ class Way < ActiveRecord::Base
         self.visible = false
         self.save_with_history!
       end
-    else
-      raise OSM::APIAlreadyDeletedError
     end
   end