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[rails.git] / db / migrate / 021_move_to_innodb.rb

diff --git a/db/migrate/021_move_to_innodb.rb b/db/migrate/021_move_to_innodb.rb
index edfecdfd9a84b19ec742cf62c8c36122a1dd6a50..4dac8410c056e4c086f754d9caa12326686d5c08 100644 (file)
--- a/db/migrate/021_move_to_innodb.rb
+++ b/db/migrate/021_move_to_innodb.rb
@@ -1,9 +1,7 @@
-require "migrate"
+class MoveToInnodb < ActiveRecord::Migration[4.2]
+  @conv_tables = %w[nodes ways way_tags way_nodes current_way_tags relation_members relations relation_tags current_relation_tags]
 
-class MoveToInnodb < ActiveRecord::Migration
-  @conv_tables = %w(nodes ways way_tags way_nodes current_way_tags relation_members relations relation_tags current_relation_tags)
-
-  @ver_tbl = %w(nodes ways relations)
+  @ver_tbl = %w[nodes ways relations]
 
   def self.up
     remove_index :current_way_tags, :name => :current_way_tags_v_idx
@@ -11,17 +9,12 @@ class MoveToInnodb < ActiveRecord::Migration
 
     @ver_tbl.each do |tbl|
       change_column tbl, "version", :bigint, :null => false
-    end
-
-    @ver_tbl.each do |tbl|
       add_column "current_#{tbl}", "version", :bigint, :null => false
-      # As the initial version of all nodes, ways and relations is 0, we set the
+      # As the initial version of all nodes, ways and relations is 0, we set tehe
       # current version to something less so that we can update the version in
       # batches of 10000
       tbl.classify.constantize.update_all(:version => -1)
-      while tbl.classify.constantize.where(:version => -1).count > 0
-        tbl.classify.constantize.update_all("version=(SELECT max(version) FROM #{tbl} WHERE #{tbl}.id = current_#{tbl}.id)", { :version => -1 }, { :limit => 10000 })
-      end
+      tbl.classify.constantize.update_all("version=(SELECT max(version) FROM #{tbl} WHERE #{tbl}.id = current_#{tbl}.id)", { :version => -1 }, { :limit => 10000 }) while tbl.classify.constantize.where(:version => -1).count.positive?
       # execute "UPDATE current_#{tbl} SET version = " +
       #  "(SELECT max(version) FROM #{tbl} WHERE #{tbl}.id = current_#{tbl}.id)"
       # The above update causes a MySQL error: