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Side by Side Diff: service/datastore/properties.go

Issue 1270063002: Rename rawdatastore -> datastore (Closed) Base URL: https://github.com/luci/gae.git@master
Patch Set: and a bit more Created 5 years, 4 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 package rawdatastore 5 package datastore
6 6
7 import ( 7 import (
8 "errors" 8 "errors"
9 "fmt" 9 "fmt"
10 "math" 10 "math"
11 "reflect" 11 "reflect"
12 "time" 12 "time"
13 13
14 "github.com/luci/gae/service/blobstore" 14 "github.com/luci/gae/service/blobstore"
15 ) 15 )
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63 // handle the error normally, use SetValue(..., NoIndex) instead. 63 // handle the error normally, use SetValue(..., NoIndex) instead.
64 func MkPropertyNI(val interface{}) Property { 64 func MkPropertyNI(val interface{}) Property {
65 ret := Property{} 65 ret := Property{}
66 if err := ret.SetValue(val, NoIndex); err != nil { 66 if err := ret.SetValue(val, NoIndex); err != nil {
67 panic(err) 67 panic(err)
68 } 68 }
69 return ret 69 return ret
70 } 70 }
71 71
72 // PropertyConverter may be implemented by the pointer-to a struct field which 72 // PropertyConverter may be implemented by the pointer-to a struct field which
73 // is serialized by RawDatastore. Its ToProperty will be called on save, and 73 // is serialized by datastore. Its ToProperty will be called on save, and
74 // it's FromProperty will be called on load (from datastore). The method may 74 // it's FromProperty will be called on load (from datastore). The method may
75 // do arbitrary computation, and if it encounters an error, may return it. This 75 // do arbitrary computation, and if it encounters an error, may return it. This
76 // error will be a fatal error (as defined by PropertyLoadSaver) for the 76 // error will be a fatal error (as defined by PropertyLoadSaver) for the
77 // struct conversion. 77 // struct conversion.
78 // 78 //
79 // Example: 79 // Example:
80 // type Complex complex 80 // type Complex complex
81 // func (c *Complex) ToProperty() (ret Property, err error) { 81 // func (c *Complex) ToProperty() (ret Property, err error) {
82 // // something like: 82 // // something like:
83 // err = ret.SetValue(fmt.Sprint(*c), true) 83 // err = ret.SetValue(fmt.Sprint(*c), true)
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307 } 307 }
308 p.propType = pt 308 p.propType = pt
309 p.value = value 309 p.value = value
310 p.indexSetting = is 310 p.indexSetting = is
311 if t == typeOfByteSlice { 311 if t == typeOfByteSlice {
312 p.indexSetting = NoIndex 312 p.indexSetting = NoIndex
313 } 313 }
314 return 314 return
315 } 315 }
316 316
317 // PropertyLoadSaver may be implemented by a user type, and RawDatastore will 317 // PropertyLoadSaver may be implemented by a user type, and datastore will
318 // use this interface to serialize the type instead of trying to automatically 318 // use this interface to serialize the type instead of trying to automatically
319 // create a serialization codec for it with helper.GetPLS. 319 // create a serialization codec for it with helper.GetPLS.
320 type PropertyLoadSaver interface { 320 type PropertyLoadSaver interface {
321 // Load takes the values from the given map and attempts to save them in to 321 // Load takes the values from the given map and attempts to save them in to
322 // the underlying object (usually a struct or a PropertyMap). If a fatal 322 // the underlying object (usually a struct or a PropertyMap). If a fatal
323 // error occurs, it's returned via error. If non-fatal conversion errors 323 // error occurs, it's returned via error. If non-fatal conversion errors
324 // occur, error will be a MultiError containing one or more ErrFieldMism atch 324 // occur, error will be a MultiError containing one or more ErrFieldMism atch
325 // objects. 325 // objects.
326 Load(PropertyMap) error 326 Load(PropertyMap) error
327 327
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442 return err 442 return err
443 } 443 }
444 pm["$"+key] = []Property{prop} 444 pm["$"+key] = []Property{prop}
445 return nil 445 return nil
446 } 446 }
447 447
448 // Problem implements PropertyLoadSaver.Problem. It ALWAYS returns nil. 448 // Problem implements PropertyLoadSaver.Problem. It ALWAYS returns nil.
449 func (pm PropertyMap) Problem() error { 449 func (pm PropertyMap) Problem() error {
450 return nil 450 return nil
451 } 451 }
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