Add Kind/StringID/IntID back to Key.

impl/prod/raw_datastore.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package prod
 
 import (
         ds "github.com/luci/gae/service/datastore"
         "github.com/luci/gae/service/info"
         "github.com/luci/luci-go/common/errors"
@@ skipping 34 matching lines @@
         }
         return err
 }
 
 func (d rdsImpl) AllocateIDs(incomplete *ds.Key, n int) (start int64, err error) {
         par, err := dsF2R(d, incomplete.Parent())
         if err != nil {
                 return
         }
 
-        start, _, err = datastore.AllocateIDs(d, incomplete.Last().Kind, par, n)
+        start, _, err = datastore.AllocateIDs(d, incomplete.Kind(), par, n)
         return
 }
 
 func (d rdsImpl) DeleteMulti(ks []*ds.Key, cb ds.DeleteMultiCB) error {
         keys, err := dsMF2R(d, ks)
         if err == nil {
                 err = datastore.DeleteMulti(d, keys)
         }
         return idxCallbacker(err, len(ks), func(_ int, err error) {
                 cb(err)
@@ skipping 142 matching lines @@
 }
 
 func (d rdsImpl) RunInTransaction(f func(c context.Context) error, opts *ds.TransactionOptions) error {
         ropts := (*datastore.TransactionOptions)(opts)
         return datastore.RunInTransaction(d, f, ropts)
 }
 
 func (d rdsImpl) Testable() ds.Testable {
         return nil
 }