Fix rubocop warnings

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

diff --git a/app/models/way.rb b/app/models/way.rb
index 34e568e4ab15d407ff052e4fb3526f88209ce48e..6fcaf39cc7c021801adc22e054820834430b7353 100644 (file)
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -1,3 +1,22 @@
+# == Schema Information
+#
+# Table name: current_ways
+#
+#  id           :bigint(8)        not null, primary key
+#  changeset_id :bigint(8)        not null
+#  timestamp    :datetime         not null
+#  visible      :boolean          not null
+#  version      :bigint(8)        not null
+#
+# Indexes
+#
+#  current_ways_timestamp_idx  (timestamp)
+#
+# Foreign Keys
+#
+#  current_ways_changeset_id_fkey  (changeset_id => changesets.id)
+#
+

 class Way < ActiveRecord::Base
   require "xml/libxml"
 
 class Way < ActiveRecord::Base
   require "xml/libxml"
 


@@ -34,31 +53,34 @@ class Way < ActiveRecord::Base
 
   # Read in xml as text and return it's Way object representation
   def self.from_xml(xml, create = false)
 
   # Read in xml as text and return it's Way object representation
   def self.from_xml(xml, create = false)

-    p = XML::Parser.string(xml)
+    p = XML::Parser.string(xml, :options => XML::Parser::Options::NOERROR)

     doc = p.parse
 
     doc.find("//osm/way").each do |pt|
       return Way.from_xml_node(pt, create)
     end
     doc = p.parse
 
     doc.find("//osm/way").each do |pt|
       return Way.from_xml_node(pt, create)
     end

-    fail 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)
+    raise OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/way element.")
+  rescue LibXML::XML::Error, ArgumentError => e
+    raise OSM::APIBadXMLError.new("way", xml, e.message)

   end
 
   def self.from_xml_node(pt, create = false)
     way = Way.new
 
   end
 
   def self.from_xml_node(pt, create = false)
     way = Way.new
 

-    fail OSM::APIBadXMLError.new("way", pt, "Version is required when updating") unless create || !pt["version"].nil?
+    raise OSM::APIBadXMLError.new("way", pt, "Version is required when updating") unless create || !pt["version"].nil?
+

     way.version = pt["version"]
     way.version = pt["version"]

-    fail OSM::APIBadXMLError.new("way", pt, "Changeset id is missing") if pt["changeset"].nil?
+    raise OSM::APIBadXMLError.new("way", pt, "Changeset id is missing") if pt["changeset"].nil?
+

     way.changeset_id = pt["changeset"]
 
     unless create
     way.changeset_id = pt["changeset"]
 
     unless create

-      fail OSM::APIBadXMLError.new("way", pt, "ID is required when updating") if pt["id"].nil?
+      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.
       # We want to make sure that there is no id with zero anyway
       way.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

-      fail OSM::APIBadUserInput.new("ID of way cannot be zero when updating.") if way.id == 0
+      raise OSM::APIBadUserInput, "ID of way cannot be zero when updating." if way.id.zero?

     end
 
     # We don't care about the timestamp nor the visibility as these are either
     end
 
     # We don't care about the timestamp nor the visibility as these are either


@@ -71,8 +93,9 @@ class Way < ActiveRecord::Base
 
     # Add in any tags from the XML
     pt.find("tag").each do |tag|
 
     # Add in any tags from the XML
     pt.find("tag").each do |tag|

-      fail OSM::APIBadXMLError.new("way", pt, "tag is missing key") if tag["k"].nil?
-      fail OSM::APIBadXMLError.new("way", pt, "tag is missing value") if tag["v"].nil?
+      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?
+

       way.add_tag_keyval(tag["k"], tag["v"])
     end
 
       way.add_tag_keyval(tag["k"], tag["v"])
     end
 


@@ -101,14 +124,10 @@ class Way < ActiveRecord::Base
     way_nodes.each do |nd|
       if visible_nodes
         # if there is a list of visible nodes then use that to weed out deleted nodes
     way_nodes.each do |nd|
       if visible_nodes
         # if there is a list of visible nodes then use that to weed out deleted nodes

-        if visible_nodes[nd.node_id]
-          ordered_nodes[nd.sequence_id] = nd.node_id.to_s
-        end
+        ordered_nodes[nd.sequence_id] = nd.node_id.to_s if visible_nodes[nd.node_id]

       else
         # otherwise, manually go to the db to check things
       else
         # otherwise, manually go to the db to check things

-        if nd.node && nd.node.visible?
-          ordered_nodes[nd.sequence_id] = nd.node_id.to_s
-        end
+        ordered_nodes[nd.sequence_id] = nd.node_id.to_s if nd.node&.visible?

       end
     end
 
       end
     end
 


@@ -138,16 +157,16 @@ class Way < ActiveRecord::Base
   attr_writer :tags
 
   def add_nd_num(n)
   attr_writer :tags
 
   def add_nd_num(n)

-    @nds = [] unless @nds
+    @nds ||= []

     @nds << n.to_i
   end
 
   def add_tag_keyval(k, v)
     @nds << n.to_i
   end
 
   def add_tag_keyval(k, v)

-    @tags = {} unless @tags
+    @tags ||= {}

 
     # duplicate tags are now forbidden, so we can't allow values
     # in the hash to be overwritten.
 
     # duplicate tags are now forbidden, so we can't allow values
     # in the hash to be overwritten.

-    fail OSM::APIDuplicateTagsError.new("way", id, k) if @tags.include? k
+    raise OSM::APIDuplicateTagsError.new("way", id, k) if @tags.include? k

 
     @tags[k] = v
   end
 
     @tags[k] = v
   end


@@ -163,11 +182,9 @@ class Way < ActiveRecord::Base
 
   def update_from(new_way, user)
     Way.transaction do
 
   def update_from(new_way, user)
     Way.transaction do

-      self.lock!
+      lock!

       check_consistency(self, new_way, user)
       check_consistency(self, new_way, user)

-      unless new_way.preconditions_ok?(nds)
-        fail OSM::APIPreconditionFailedError.new("Cannot update way #{id}: data is invalid.")
-      end
+      raise OSM::APIPreconditionFailedError, "Cannot update way #{id}: data is invalid." unless new_way.preconditions_ok?(nds)

 
       self.changeset_id = new_way.changeset_id
       self.changeset = new_way.changeset
 
       self.changeset_id = new_way.changeset_id
       self.changeset = new_way.changeset


@@ -180,9 +197,8 @@ class Way < ActiveRecord::Base
 
   def create_with_history(user)
     check_create_consistency(self, user)
 
   def create_with_history(user)
     check_create_consistency(self, user)

-    unless self.preconditions_ok?
-      fail OSM::APIPreconditionFailedError.new("Cannot create way: data is invalid.")
-    end
+    raise OSM::APIPreconditionFailedError, "Cannot create way: data is invalid." unless preconditions_ok?
+

     self.version = 0
     self.visible = true
     save_with_history!
     self.version = 0
     self.visible = true
     save_with_history!


@@ -190,20 +206,20 @@ class Way < ActiveRecord::Base
 
   def preconditions_ok?(old_nodes = [])
     return false if nds.empty?
 
   def preconditions_ok?(old_nodes = [])
     return false if nds.empty?

-    if nds.length > MAX_NUMBER_OF_WAY_NODES
-      fail OSM::APITooManyWayNodesError.new(id, nds.length, MAX_NUMBER_OF_WAY_NODES)
-    end
+    raise OSM::APITooManyWayNodesError.new(id, nds.length, Settings.max_number_of_way_nodes) if nds.length > Settings.max_number_of_way_nodes

 
     # check only the new nodes, for efficiency - old nodes having been checked last time and can't
     # be deleted when they're in-use.
     new_nds = (nds - old_nodes).sort.uniq
 
     unless new_nds.empty?
 
     # check only the new nodes, for efficiency - old nodes having been checked last time and can't
     # be deleted when they're in-use.
     new_nds = (nds - old_nodes).sort.uniq
 
     unless new_nds.empty?

-      db_nds = Node.where(:id => new_nds, :visible => true)
+      # NOTE: nodes are locked here to ensure they can't be deleted before
+      # the current transaction commits.
+      db_nds = Node.where(:id => new_nds, :visible => true).lock("for share")

 
       if db_nds.length < new_nds.length
         missing = new_nds - db_nds.collect(&:id)
 
       if db_nds.length < new_nds.length
         missing = new_nds - db_nds.collect(&:id)

-        fail OSM::APIPreconditionFailedError.new("Way #{id} requires the nodes with id in (#{missing.join(',')}), which either do not exist, or are not visible.")
+        raise OSM::APIPreconditionFailedError, "Way #{id} requires the nodes with id in (#{missing.join(',')}), which either do not exist, or are not visible."

       end
     end
 
       end
     end
 


@@ -211,16 +227,16 @@ class Way < ActiveRecord::Base
   end
 
   def delete_with_history!(new_way, user)
   end
 
   def delete_with_history!(new_way, user)

-    fail OSM::APIAlreadyDeletedError.new("way", new_way.id) unless visible
+    raise OSM::APIAlreadyDeletedError.new("way", new_way.id) unless visible

 
     # 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
 
     # 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!
+      lock!

       check_consistency(self, new_way, user)
       rels = Relation.joins(:relation_members).where(:visible => true, :current_relation_members => { :member_type => "Way", :member_id => id }).order(:id)
       check_consistency(self, new_way, user)
       rels = Relation.joins(:relation_members).where(:visible => true, :current_relation_members => { :member_type => "Way", :member_id => id }).order(:id)

-      fail OSM::APIPreconditionFailedError.new("Way #{id} is still used by relations #{rels.collect(&:id).join(",")}.") unless rels.empty?
+      raise OSM::APIPreconditionFailedError, "Way #{id} is still used by relations #{rels.collect(&:id).join(',')}." unless rels.empty?

 
       self.changeset_id = new_way.changeset_id
       self.changeset = new_way.changeset
 
       self.changeset_id = new_way.changeset_id
       self.changeset = new_way.changeset


@@ -238,9 +254,10 @@ class Way < ActiveRecord::Base
   # to IDs +id_map+.
   def fix_placeholders!(id_map, placeholder_id = nil)
     nds.map! do |node_id|
   # to IDs +id_map+.
   def fix_placeholders!(id_map, placeholder_id = nil)
     nds.map! do |node_id|

-      if node_id < 0
+      if node_id.negative?

         new_id = id_map[:node][node_id]
         new_id = id_map[:node][node_id]

-        fail OSM::APIBadUserInput.new("Placeholder node not found for reference #{node_id} in way #{id.nil? ? placeholder_id : id}") if new_id.nil?
+        raise OSM::APIBadUserInput, "Placeholder node not found for reference #{node_id} in way #{id.nil? ? placeholder_id : id}" if new_id.nil?
+

         new_id
       else
         node_id
         new_id
       else
         node_id


@@ -253,6 +270,9 @@ class Way < ActiveRecord::Base
   def save_with_history!
     t = Time.now.getutc
 
   def save_with_history!
     t = Time.now.getutc
 

+    self.version += 1
+    self.timestamp = t
+

     # 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
     # 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


@@ -261,12 +281,12 @@ class Way < ActiveRecord::Base
     cs.update_bbox!(bbox) unless nodes.empty?
 
     Way.transaction do
     cs.update_bbox!(bbox) unless nodes.empty?
 
     Way.transaction do

-      self.version += 1
-      self.timestamp = t
-      self.save!
+      # clone the object before saving it so that the original is
+      # still marked as dirty if we retry the transaction
+      clone.save!

 
       tags = self.tags
 
       tags = self.tags

-      WayTag.delete_all(:way_id => id)
+      WayTag.where(:way_id => id).delete_all

       tags.each do |k, v|
         tag = WayTag.new
         tag.way_id = id
       tags.each do |k, v|
         tag = WayTag.new
         tag.way_id = id


@@ -276,7 +296,7 @@ class Way < ActiveRecord::Base
       end
 
       nds = self.nds
       end
 
       nds = self.nds

-      WayNode.delete_all(:way_id => id)
+      WayNode.where(:way_id => id).delete_all

       sequence = 1
       nds.each do |n|
         nd = WayNode.new
       sequence = 1
       nds.each do |n|
         nd = WayNode.new