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1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 package rawdatastore | |
6 | |
7 import ( | |
8 "fmt" | |
9 "reflect" | |
10 | |
11 "google.golang.org/appengine/datastore" | |
12 ) | |
13 | |
14 // These errors are returned by various rawdatastore.Interface methods. | |
15 var ( | |
16 ErrInvalidEntityType = datastore.ErrInvalidEntityType | |
17 ErrInvalidKey = datastore.ErrInvalidKey | |
18 ErrNoSuchEntity = datastore.ErrNoSuchEntity | |
19 ErrConcurrentTransaction = datastore.ErrConcurrentTransaction | |
20 ErrQueryDone = datastore.Done | |
21 | |
22 // ErrMetaFieldUnset is returned from PropertyLoadSaver.{Get,Set}Meta | |
23 // implementations when the specified meta key isn't set on the struct a
t | |
24 // all. | |
25 ErrMetaFieldUnset = fmt.Errorf("gae: meta field unset") | |
26 ) | |
27 | |
28 // ErrFieldMismatch is returned when a field is to be loaded into a different | |
29 // type than the one it was stored from, or when a field is missing or | |
30 // unexported in the destination struct. | |
31 // StructType is the type of the struct pointed to by the destination argument | |
32 // passed to Get or to Iterator.Next. | |
33 type ErrFieldMismatch struct { | |
34 StructType reflect.Type | |
35 FieldName string | |
36 Reason string | |
37 } | |
38 | |
39 func (e *ErrFieldMismatch) Error() string { | |
40 return fmt.Sprintf("gae: cannot load field %q into a %q: %s", | |
41 e.FieldName, e.StructType, e.Reason) | |
42 } | |
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