Change RawDatastore to do less reflection.

go/src/infra/gae/epservice/example/service_list.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 example
 
 import (
         "golang.org/x/net/context"
+
         "infra/gae/libs/gae"
+        "infra/gae/libs/gae/helper"
         "infra/gae/libs/gae/prod"
 
         "github.com/GoogleCloudPlatform/go-endpoints/endpoints"
 )
 
 // ListRsp is the response from the 'List' RPC. It contains a list of Counters
 // including their IDs and Values.
 type ListRsp struct {
         Counters []Counter
 }
 
 // List returns a list of all the counters. Note that it's very poorly
 // implemented! It's completely unpaged. I don't care :).
 func (Example) List(c context.Context) (rsp *ListRsp, err error) {
         rds := gae.GetRDS(prod.Use(c))
         rsp = &ListRsp{}
-        _, err = rds.GetAll(rds.NewQuery("Counter"), &rsp.Counters)
+        dst := []gae.DSPropertyMap{}
+        _, err = rds.GetAll(rds.NewQuery("Counter"), &dst)
         if err != nil {
                 return
         }
+        rsp.Counters = make([]Counter, len(dst))
+        for i, m := range dst {
+                if err = helper.GetPLS(rsp.Counters[i]).Load(m); err != nil {
+                        return
+                }
+        }
         return
 }
 
 func init() {
         mi["List"] = &endpoints.MethodInfo{
                 Path: "counter",
                 Desc: "Returns all of the available counters",
         }
 }