1 files changed, 0 insertions, 60 deletions
diff --git a/activerecord/lib/active_record/associations/preloader/has_and_belongs_to_many.rb b/activerecord/lib/active_record/associations/preloader/has_and_belongs_to_many.rb
deleted file mode 100644
index 8e8925f0a9..0000000000
--- a/activerecord/lib/active_record/associations/preloader/has_and_belongs_to_many.rb
+++ /dev/null
@@ -1,60 +0,0 @@
-module ActiveRecord
-  module Associations
-    class Preloader
-      class HasAndBelongsToMany < CollectionAssociation #:nodoc:
-        attr_reader :join_table
-
-        def initialize(klass, records, reflection, preload_options)
-          super
-          @join_table = Arel::Table.new(reflection.join_table).alias('t0')
-        end
-
-        # Unlike the other associations, we want to get a raw array of rows so that we can
-        # access the aliased column on the join table
-        def records_for(ids)
-          scope = super
-          klass.connection.select_all(scope.arel, 'SQL', scope.bind_values)
-        end
-
-        def owner_key_name
-          reflection.active_record_primary_key
-        end
-
-        def association_key_name
-          'ar_association_key_name'
-        end
-
-        def association_key
-          join_table[reflection.foreign_key]
-        end
-
-        private
-
-        # Once we have used the join table column (in super), we manually instantiate the
-        # actual records, ensuring that we don't create more than one instances of the same
-        # record
-        def associated_records_by_owner
-          records = {}
-          super.each do |owner_key, rows|
-            rows.map! { |row| records[row[klass.primary_key]] ||= klass.instantiate(row) }
-          end
-        end
-
-        def build_scope
-          super.joins(join).select(join_select)
-        end
-
-        def join_select
-          association_key.as(Arel.sql(association_key_name))
-        end
-
-        def join
-          condition = table[reflection.association_primary_key].eq(
-            join_table[reflection.association_foreign_key])
-
-          table.create_join(join_table, table.create_on(condition))
-        end
-      end
-    end
-  end
-end