Use activerecord-import for bulk importing tracepoint records

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

diff --git a/app/models/trace.rb b/app/models/trace.rb
index b7b96c65e6ea4b1dd4e94823dab2dd377d42bd07..bd8ab72b3cfe340eb62ed068a8ac6068cab20fed 100644 (file)
--- a/app/models/trace.rb
+++ b/app/models/trace.rb
@@ -1,3 +1,30 @@
+# == Schema Information
+#
+# Table name: gpx_files
+#
+#  id          :integer          not null, primary key
+#  user_id     :integer          not null
+#  visible     :boolean          default(TRUE), not null
+#  name        :string           default(""), not null
+#  size        :integer
+#  latitude    :float
+#  longitude   :float
+#  timestamp   :datetime         not null
+#  description :string           default(""), not null
+#  inserted    :boolean          not null
+#  visibility  :enum             default("public"), not null
+#
+# Indexes
+#
+#  gpx_files_timestamp_idx           (timestamp)
+#  gpx_files_user_id_idx             (user_id)
+#  gpx_files_visible_visibility_idx  (visible,visibility)
+#
+# Foreign Keys
+#
+#  gpx_files_user_id_fkey  (user_id => users.id)
+#
+
 class Trace < ActiveRecord::Base
   self.table_name = "gpx_files"
 
@@ -11,8 +38,8 @@ class Trace < ActiveRecord::Base
   scope :tagged, ->(t) { joins(:tags).where(:gpx_file_tags => { :tag => t }) }
 
   validates :user, :presence => true, :associated => true
-  validates :name, :presence => true, :length => 1..255
-  validates :description, :presence => { :on => :create }, :length => 1..255
+  validates :name, :presence => true, :length => 1..255, :characters => true
+  validates :description, :presence => { :on => :create }, :length => 1..255, :characters => true
   validates :timestamp, :presence => true
   validates :visibility, :inclusion => %w[private public trackable identifiable]
 
@@ -83,15 +110,15 @@ class Trace < ActiveRecord::Base
   end
 
   def large_picture_name
-    "#{GPX_IMAGE_DIR}/#{id}.gif"
+    "#{Settings.gpx_image_dir}/#{id}.gif"
   end
 
   def icon_picture_name
-    "#{GPX_IMAGE_DIR}/#{id}_icon.gif"
+    "#{Settings.gpx_image_dir}/#{id}_icon.gif"
   end
 
   def trace_name
-    "#{GPX_TRACE_DIR}/#{id}.gpx"
+    "#{Settings.gpx_trace_dir}/#{id}.gpx"
   end
 
   def mime_type
@@ -172,12 +199,12 @@ class Trace < ActiveRecord::Base
     el1
   end
 
-  def from_xml(xml, create = false)
+  def update_from_xml(xml, create = false)
     p = XML::Parser.string(xml, :options => XML::Parser::Options::NOERROR)
     doc = p.parse
 
     doc.find("//osm/gpx_file").each do |pt|
-      return from_xml_node(pt, create)
+      return update_from_xml_node(pt, create)
     end
 
     raise OSM::APIBadXMLError.new("trace", xml, "XML doesn't contain an osm/gpx_file element.")
@@ -185,17 +212,19 @@ class Trace < ActiveRecord::Base
     raise OSM::APIBadXMLError.new("trace", xml, ex.message)
   end
 
-  def from_xml_node(pt, create = false)
+  def update_from_xml_node(pt, create = false)
     raise OSM::APIBadXMLError.new("trace", pt, "visibility missing") if pt["visibility"].nil?
+
     self.visibility = pt["visibility"]
 
     unless create
       raise OSM::APIBadXMLError.new("trace", pt, "ID is required when updating.") if pt["id"].nil?
+
       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 trace cannot be zero when updating.") if id.zero?
-      raise OSM::APIBadUserInput.new("The id in the url (#{self.id}) is not the same as provided in the xml (#{id})") unless self.id == id
+      raise OSM::APIBadUserInput, "ID of trace cannot be zero when updating." if id.zero?
+      raise OSM::APIBadUserInput, "The id in the url (#{self.id}) is not the same as provided in the xml (#{id})" unless self.id == id
     end
 
     # We don't care about the time, as it is explicitly set on create/update/delete
@@ -205,6 +234,7 @@ class Trace < ActiveRecord::Base
 
     description = pt.find("description").first
     raise OSM::APIBadXMLError.new("trace", pt, "description missing") if description.nil?
+
     self.description = description.content
 
     self.tags = pt.find("tag").collect do |tag|
@@ -250,7 +280,7 @@ class Trace < ActiveRecord::Base
   def import
     logger.info("GPX Import importing #{name} (#{id}) from #{user.email}")
 
-    gpx = GPX::File.new(xml_file)
+    gpx = ::GPX::File.new(xml_file)
 
     f_lat = 0
     f_lon = 0
@@ -259,6 +289,8 @@ class Trace < ActiveRecord::Base
     # If there are any existing points for this trace then delete them
     Tracepoint.where(:gpx_id => id).delete_all
 
+    # Gather the trace points together for a bulk import
+    tracepoints = []
     gpx.points do |point|
       if first
         f_lat = point.latitude
@@ -273,10 +305,17 @@ class Trace < ActiveRecord::Base
       tp.timestamp = point.timestamp
       tp.gpx_id = id
       tp.trackid = point.segment
-      tp.save!
+      tracepoints << tp
+    end
+
+    # Run the before_save and before_create callbacks, and then import them in bulk with activerecord-import
+    tracepoints.each do |tp|
+      tp.run_callbacks(:save) { false }
+      tp.run_callbacks(:create) { false }
     end
+    Tracepoint.import(tracepoints)
 
-    if gpx.actual_points > 0
+    if gpx.actual_points.positive?
       max_lat = Tracepoint.where(:gpx_id => id).maximum(:latitude)
       min_lat = Tracepoint.where(:gpx_id => id).minimum(:latitude)
       max_lon = Tracepoint.where(:gpx_id => id).maximum(:longitude)