-
Notifications
You must be signed in to change notification settings - Fork 1.2k
/
DictionarySerializerBase.cs
743 lines (665 loc) · 27.9 KB
/
DictionarySerializerBase.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
/* Copyright 2010-present MongoDB Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using System.Collections;
using System.Collections.Generic;
using MongoDB.Bson.IO;
using MongoDB.Bson.Serialization.Options;
namespace MongoDB.Bson.Serialization.Serializers
{
/// <summary>
/// Represents a serializer for dictionaries.
/// </summary>
/// <typeparam name="TDictionary">The type of the dictionary.</typeparam>
public abstract class DictionarySerializerBase<TDictionary> :
ClassSerializerBase<TDictionary>,
IBsonDocumentSerializer,
IBsonDictionarySerializer
where TDictionary : class, IDictionary
{
// private constants
private static class Flags
{
public const long Key = 1;
public const long Value = 2;
}
// private fields
private readonly DictionaryRepresentation _dictionaryRepresentation;
private readonly SerializerHelper _helper;
private readonly IBsonSerializer _keySerializer;
private readonly IBsonSerializer _valueSerializer;
// constructors
/// <summary>
/// Initializes a new instance of the <see cref="DictionarySerializerBase{TDictionary}"/> class.
/// </summary>
public DictionarySerializerBase()
: this(DictionaryRepresentation.Document)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="DictionarySerializerBase{TDictionary}"/> class.
/// </summary>
/// <param name="dictionaryRepresentation">The dictionary representation.</param>
public DictionarySerializerBase(DictionaryRepresentation dictionaryRepresentation)
: this(dictionaryRepresentation, BsonSerializer.LookupSerializer<object>(), BsonSerializer.LookupSerializer<object>())
{
}
/// <summary>
/// Initializes a new instance of the <see cref="DictionarySerializerBase{TDictionary}"/> class.
/// </summary>
/// <param name="dictionaryRepresentation">The dictionary representation.</param>
/// <param name="keySerializer">The key serializer.</param>
/// <param name="valueSerializer">The value serializer.</param>
public DictionarySerializerBase(DictionaryRepresentation dictionaryRepresentation, IBsonSerializer keySerializer, IBsonSerializer valueSerializer)
{
_dictionaryRepresentation = dictionaryRepresentation;
_keySerializer = keySerializer;
_valueSerializer = valueSerializer;
_helper = new SerializerHelper
(
new SerializerHelper.Member("k", Flags.Key),
new SerializerHelper.Member("v", Flags.Value)
);
}
// public properties
/// <summary>
/// Gets the dictionary representation.
/// </summary>
/// <value>
/// The dictionary representation.
/// </value>
public DictionaryRepresentation DictionaryRepresentation
{
get { return _dictionaryRepresentation; }
}
/// <summary>
/// Gets the key serializer.
/// </summary>
/// <value>
/// The key serializer.
/// </value>
public IBsonSerializer KeySerializer
{
get { return _keySerializer; }
}
/// <summary>
/// Gets the value serializer.
/// </summary>
/// <value>
/// The value serializer.
/// </value>
public IBsonSerializer ValueSerializer
{
get { return _valueSerializer; }
}
// public methods
/// <inheritdoc/>
public bool TryGetMemberSerializationInfo(string memberName, out BsonSerializationInfo serializationInfo)
{
if (_dictionaryRepresentation != DictionaryRepresentation.Document)
{
serializationInfo = null;
return false;
}
serializationInfo = new BsonSerializationInfo(
memberName,
_valueSerializer,
_valueSerializer.ValueType);
return true;
}
// protected methods
/// <summary>
/// Deserializes a value.
/// </summary>
/// <param name="context">The deserialization context.</param>
/// <param name="args">The deserialization args.</param>
/// <returns>A deserialized value.</returns>
protected override TDictionary DeserializeValue(BsonDeserializationContext context, BsonDeserializationArgs args)
{
var bsonReader = context.Reader;
var bsonType = bsonReader.GetCurrentBsonType();
switch (bsonType)
{
case BsonType.Array:
return DeserializeArrayRepresentation(context);
case BsonType.Document:
return DeserializeDocumentRepresentation(context);
default:
throw CreateCannotDeserializeFromBsonTypeException(bsonType);
}
}
/// <summary>
/// Serializes a value.
/// </summary>
/// <param name="context">The serialization context.</param>
/// <param name="args">The serialization args.</param>
/// <param name="value">The object.</param>
protected override void SerializeValue(BsonSerializationContext context, BsonSerializationArgs args, TDictionary value)
{
var bsonWriter = context.Writer;
switch (_dictionaryRepresentation)
{
case DictionaryRepresentation.Document:
SerializeDocumentRepresentation(context, value);
break;
case DictionaryRepresentation.ArrayOfArrays:
SerializeArrayOfArraysRepresentation(context, value);
break;
case DictionaryRepresentation.ArrayOfDocuments:
SerializeArrayOfDocumentsRepresentation(context, value);
break;
default:
var message = string.Format("'{0}' is not a valid IDictionary representation.", _dictionaryRepresentation);
throw new BsonSerializationException(message);
}
}
// protected methods
/// <summary>
/// Creates the instance.
/// </summary>
/// <returns>The instance.</returns>
protected abstract TDictionary CreateInstance();
// private methods
private TDictionary DeserializeArrayRepresentation(BsonDeserializationContext context)
{
var dictionary = CreateInstance();
var bsonReader = context.Reader;
bsonReader.ReadStartArray();
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
object key;
object value;
var bsonType = bsonReader.GetCurrentBsonType();
switch (bsonType)
{
case BsonType.Array:
bsonReader.ReadStartArray();
key = _keySerializer.Deserialize(context);
value = _valueSerializer.Deserialize(context);
bsonReader.ReadEndArray();
break;
case BsonType.Document:
key = null;
value = null;
_helper.DeserializeMembers(context, (elementName, flag) =>
{
switch (flag)
{
case Flags.Key: key = _keySerializer.Deserialize(context); break;
case Flags.Value: value = _valueSerializer.Deserialize(context); break;
}
});
break;
default:
throw CreateCannotDeserializeFromBsonTypeException(bsonType);
}
dictionary.Add(key, value);
}
bsonReader.ReadEndArray();
return dictionary;
}
private TDictionary DeserializeDocumentRepresentation(BsonDeserializationContext context)
{
var dictionary = CreateInstance();
var bsonReader = context.Reader;
bsonReader.ReadStartDocument();
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
var key = DeserializeKeyString(bsonReader.ReadName());
var value = _valueSerializer.Deserialize(context);
dictionary.Add(key, value);
}
bsonReader.ReadEndDocument();
return dictionary;
}
private object DeserializeKeyString(string keyString)
{
var keyDocument = new BsonDocument("k", keyString);
using (var keyReader = new BsonDocumentReader(keyDocument))
{
var context = BsonDeserializationContext.CreateRoot(keyReader);
keyReader.ReadStartDocument();
keyReader.ReadName("k");
var key = _keySerializer.Deserialize(context);
keyReader.ReadEndDocument();
return key;
}
}
private void SerializeArrayOfArraysRepresentation(BsonSerializationContext context, TDictionary value)
{
var bsonWriter = context.Writer;
bsonWriter.WriteStartArray();
foreach (DictionaryEntry dictionaryEntry in value)
{
bsonWriter.WriteStartArray();
_keySerializer.Serialize(context, dictionaryEntry.Key);
_valueSerializer.Serialize(context, dictionaryEntry.Value);
bsonWriter.WriteEndArray();
}
bsonWriter.WriteEndArray();
}
private void SerializeArrayOfDocumentsRepresentation(BsonSerializationContext context, TDictionary value)
{
var bsonWriter = context.Writer;
bsonWriter.WriteStartArray();
foreach (DictionaryEntry dictionaryEntry in value)
{
bsonWriter.WriteStartDocument();
bsonWriter.WriteName("k");
_keySerializer.Serialize(context, dictionaryEntry.Key);
bsonWriter.WriteName("v");
_valueSerializer.Serialize(context, dictionaryEntry.Value);
bsonWriter.WriteEndDocument();
}
bsonWriter.WriteEndArray();
}
private void SerializeDocumentRepresentation(BsonSerializationContext context, TDictionary value)
{
var bsonWriter = context.Writer;
bsonWriter.WriteStartDocument();
foreach (DictionaryEntry dictionaryEntry in value)
{
bsonWriter.WriteName(SerializeKeyString(dictionaryEntry.Key));
_valueSerializer.Serialize(context, dictionaryEntry.Value);
}
bsonWriter.WriteEndDocument();
}
private string SerializeKeyString(object key)
{
var keyDocument = new BsonDocument();
using (var keyWriter = new BsonDocumentWriter(keyDocument))
{
var context = BsonSerializationContext.CreateRoot(keyWriter);
keyWriter.WriteStartDocument();
keyWriter.WriteName("k");
_keySerializer.Serialize(context, key);
keyWriter.WriteEndDocument();
}
var keyValue = keyDocument["k"];
if (keyValue.BsonType != BsonType.String)
{
throw new BsonSerializationException("When using DictionaryRepresentation.Document key values must serialize as strings.");
}
return (string)keyValue;
}
}
/// <summary>
/// Represents a serializer for dictionaries.
/// </summary>
/// <typeparam name="TDictionary">The type of the dictionary.</typeparam>
/// <typeparam name="TKey">The type of the keys.</typeparam>
/// <typeparam name="TValue">The type of the values.</typeparam>
public abstract class DictionarySerializerBase<TDictionary, TKey, TValue> :
ClassSerializerBase<TDictionary>,
IBsonArraySerializer,
IBsonDocumentSerializer,
IBsonDictionarySerializer
where TDictionary : class, IEnumerable<KeyValuePair<TKey, TValue>>
{
// private constants
private static class Flags
{
public const long Key = 1;
public const long Value = 2;
}
// private fields
private readonly DictionaryRepresentation _dictionaryRepresentation;
private readonly SerializerHelper _helper;
private readonly Lazy<IBsonSerializer<TKey>> _lazyKeySerializer;
private readonly Lazy<IBsonSerializer<TValue>> _lazyValueSerializer;
// constructors
/// <summary>
/// Initializes a new instance of the <see cref="DictionarySerializerBase{TDictionary, TKey, TValue}"/> class.
/// </summary>
public DictionarySerializerBase()
: this(DictionaryRepresentation.Document)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="DictionarySerializerBase{TDictionary, TKey, TValue}" /> class.
/// </summary>
/// <param name="dictionaryRepresentation">The dictionary representation.</param>
public DictionarySerializerBase(DictionaryRepresentation dictionaryRepresentation)
: this(dictionaryRepresentation, BsonSerializer.SerializerRegistry)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="DictionarySerializerBase{TDictionary, TKey, TValue}" /> class.
/// </summary>
/// <param name="dictionaryRepresentation">The dictionary representation.</param>
/// <param name="keySerializer">The key serializer.</param>
/// <param name="valueSerializer">The value serializer.</param>
public DictionarySerializerBase(DictionaryRepresentation dictionaryRepresentation, IBsonSerializer<TKey> keySerializer, IBsonSerializer<TValue> valueSerializer)
: this(
dictionaryRepresentation,
new Lazy<IBsonSerializer<TKey>>(() => keySerializer),
new Lazy<IBsonSerializer<TValue>>(() => valueSerializer))
{
if (keySerializer == null)
{
throw new ArgumentNullException("keySerializer");
}
if (valueSerializer == null)
{
throw new ArgumentNullException("valueSerializer");
}
}
/// <summary>
/// Initializes a new instance of the <see cref="DictionarySerializerBase{TDictionary, TKey, TValue}" /> class.
/// </summary>
/// <param name="dictionaryRepresentation">The dictionary representation.</param>
/// <param name="serializerRegistry">The serializer registry.</param>
public DictionarySerializerBase(DictionaryRepresentation dictionaryRepresentation, IBsonSerializerRegistry serializerRegistry)
: this(
dictionaryRepresentation,
new Lazy<IBsonSerializer<TKey>>(() => serializerRegistry.GetSerializer<TKey>()),
new Lazy<IBsonSerializer<TValue>>(() => serializerRegistry.GetSerializer<TValue>()))
{
if (serializerRegistry == null)
{
throw new ArgumentNullException("serializerRegistry");
}
}
private DictionarySerializerBase(
DictionaryRepresentation dictionaryRepresentation,
Lazy<IBsonSerializer<TKey>> lazyKeySerializer,
Lazy<IBsonSerializer<TValue>> lazyValueSerializer)
{
_dictionaryRepresentation = dictionaryRepresentation;
_lazyKeySerializer = lazyKeySerializer;
_lazyValueSerializer = lazyValueSerializer;
_helper = new SerializerHelper
(
new SerializerHelper.Member("k", Flags.Key),
new SerializerHelper.Member("v", Flags.Value)
);
}
// public properties
/// <summary>
/// Gets the dictionary representation.
/// </summary>
/// <value>
/// The dictionary representation.
/// </value>
public DictionaryRepresentation DictionaryRepresentation
{
get { return _dictionaryRepresentation; }
}
/// <summary>
/// Gets the key serializer.
/// </summary>
/// <value>
/// The key serializer.
/// </value>
public IBsonSerializer<TKey> KeySerializer
{
get { return _lazyKeySerializer.Value; }
}
/// <summary>
/// Gets the value serializer.
/// </summary>
/// <value>
/// The value serializer.
/// </value>
public IBsonSerializer<TValue> ValueSerializer
{
get { return _lazyValueSerializer.Value; }
}
// public methods
/// <inheritdoc/>
public bool TryGetItemSerializationInfo(out BsonSerializationInfo serializationInfo)
{
if (_dictionaryRepresentation != DictionaryRepresentation.ArrayOfDocuments)
{
serializationInfo = null;
return false;
}
var serializer = new KeyValuePairSerializer<TKey, TValue>(
BsonType.Document,
_lazyKeySerializer.Value,
_lazyValueSerializer.Value);
serializationInfo = new BsonSerializationInfo(
null,
serializer,
serializer.ValueType);
return true;
}
/// <inheritdoc/>
public bool TryGetMemberSerializationInfo(string memberName, out BsonSerializationInfo serializationInfo)
{
if (_dictionaryRepresentation != DictionaryRepresentation.Document)
{
serializationInfo = null;
return false;
}
serializationInfo = new BsonSerializationInfo(
memberName,
_lazyValueSerializer.Value,
_lazyValueSerializer.Value.ValueType);
return true;
}
// protected methods
/// <summary>
/// Deserializes a value.
/// </summary>
/// <param name="context">The deserialization context.</param>
/// <param name="args">The deserialization args.</param>
/// <returns>A deserialized value.</returns>
protected override TDictionary DeserializeValue(BsonDeserializationContext context, BsonDeserializationArgs args)
{
var bsonReader = context.Reader;
var bsonType = bsonReader.GetCurrentBsonType();
switch (bsonType)
{
case BsonType.Array:
return DeserializeArrayRepresentation(context);
case BsonType.Document:
return DeserializeDocumentRepresentation(context);
default:
throw CreateCannotDeserializeFromBsonTypeException(bsonType);
}
}
/// <summary>
/// Serializes a value.
/// </summary>
/// <param name="context">The serialization context.</param>
/// <param name="args">The serialization args.</param>
/// <param name="value">The object.</param>
protected override void SerializeValue(BsonSerializationContext context, BsonSerializationArgs args, TDictionary value)
{
var bsonWriter = context.Writer;
switch (_dictionaryRepresentation)
{
case DictionaryRepresentation.Document:
SerializeDocumentRepresentation(context, value);
break;
case DictionaryRepresentation.ArrayOfArrays:
SerializeArrayOfArraysRepresentation(context, value);
break;
case DictionaryRepresentation.ArrayOfDocuments:
SerializeArrayOfDocumentsRepresentation(context, value);
break;
default:
var message = string.Format("'{0}' is not a valid IDictionary<{1}, {2}> representation.",
_dictionaryRepresentation,
BsonUtils.GetFriendlyTypeName(typeof(TKey)),
BsonUtils.GetFriendlyTypeName(typeof(TValue)));
throw new BsonSerializationException(message);
}
}
// protected methods
/// <summary>
/// Creates an accumulator.
/// </summary>
/// <returns>The accumulator.</returns>
protected virtual ICollection<KeyValuePair<TKey, TValue>> CreateAccumulator()
{
#pragma warning disable 618
return (ICollection<KeyValuePair<TKey, TValue>>)CreateInstance();
#pragma warning restore 618
}
// protected methods
/// <summary>
/// Creates the instance.
/// </summary>
/// <returns>The instance.</returns>
[Obsolete("CreateInstance is deprecated. Please use CreateAccumulator instead.")]
protected virtual TDictionary CreateInstance()
{
throw new NotImplementedException();
}
/// <summary>
/// Finalizes an accumulator.
/// </summary>
/// <param name="accumulator">The accumulator to finalize</param>
/// <returns>The instance.</returns>
protected virtual TDictionary FinalizeAccumulator(ICollection<KeyValuePair<TKey, TValue>> accumulator)
{
return (TDictionary)accumulator;
}
// private methods
private TDictionary DeserializeArrayRepresentation(BsonDeserializationContext context)
{
var accumulator = CreateAccumulator();
var bsonReader = context.Reader;
bsonReader.ReadStartArray();
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
TKey key;
TValue value;
var bsonType = bsonReader.GetCurrentBsonType();
switch (bsonType)
{
case BsonType.Array:
bsonReader.ReadStartArray();
key = _lazyKeySerializer.Value.Deserialize(context);
value = _lazyValueSerializer.Value.Deserialize(context);
bsonReader.ReadEndArray();
break;
case BsonType.Document:
key = default(TKey);
value = default(TValue);
_helper.DeserializeMembers(context, (elementName, flag) =>
{
switch (flag)
{
case Flags.Key: key = _lazyKeySerializer.Value.Deserialize(context); break;
case Flags.Value: value = _lazyValueSerializer.Value.Deserialize(context); break;
}
});
break;
default:
throw CreateCannotDeserializeFromBsonTypeException(bsonType);
}
accumulator.Add(new KeyValuePair<TKey, TValue>(key, value));
}
bsonReader.ReadEndArray();
return FinalizeAccumulator(accumulator);
}
private TDictionary DeserializeDocumentRepresentation(BsonDeserializationContext context)
{
var accumulator = CreateAccumulator();
var bsonReader = context.Reader;
bsonReader.ReadStartDocument();
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
var key = DeserializeKeyString(bsonReader.ReadName());
var value = _lazyValueSerializer.Value.Deserialize(context);
accumulator.Add(new KeyValuePair<TKey, TValue>(key, value));
}
bsonReader.ReadEndDocument();
return FinalizeAccumulator(accumulator);
}
private TKey DeserializeKeyString(string keyString)
{
var keyDocument = new BsonDocument("k", keyString);
using (var keyReader = new BsonDocumentReader(keyDocument))
{
var context = BsonDeserializationContext.CreateRoot(keyReader);
keyReader.ReadStartDocument();
keyReader.ReadName("k");
var key = _lazyKeySerializer.Value.Deserialize(context);
keyReader.ReadEndDocument();
return key;
}
}
private void SerializeArrayOfArraysRepresentation(BsonSerializationContext context, TDictionary value)
{
var bsonWriter = context.Writer;
bsonWriter.WriteStartArray();
foreach (var keyValuePair in value)
{
bsonWriter.WriteStartArray();
_lazyKeySerializer.Value.Serialize(context, keyValuePair.Key);
_lazyValueSerializer.Value.Serialize(context, keyValuePair.Value);
bsonWriter.WriteEndArray();
}
bsonWriter.WriteEndArray();
}
private void SerializeArrayOfDocumentsRepresentation(BsonSerializationContext context, TDictionary value)
{
var bsonWriter = context.Writer;
bsonWriter.WriteStartArray();
foreach (var keyValuePair in value)
{
bsonWriter.WriteStartDocument();
bsonWriter.WriteName("k");
_lazyKeySerializer.Value.Serialize(context, keyValuePair.Key);
bsonWriter.WriteName("v");
_lazyValueSerializer.Value.Serialize(context, keyValuePair.Value);
bsonWriter.WriteEndDocument();
}
bsonWriter.WriteEndArray();
}
private void SerializeDocumentRepresentation(BsonSerializationContext context, TDictionary value)
{
var bsonWriter = context.Writer;
bsonWriter.WriteStartDocument();
foreach (var keyValuePair in value)
{
bsonWriter.WriteName(SerializeKeyString(keyValuePair.Key));
_lazyValueSerializer.Value.Serialize(context, keyValuePair.Value);
}
bsonWriter.WriteEndDocument();
}
private string SerializeKeyString(TKey key)
{
var keyDocument = new BsonDocument();
using (var keyWriter = new BsonDocumentWriter(keyDocument))
{
var context = BsonSerializationContext.CreateRoot(keyWriter);
keyWriter.WriteStartDocument();
keyWriter.WriteName("k");
_lazyKeySerializer.Value.Serialize(context, key);
keyWriter.WriteEndDocument();
}
var keyValue = keyDocument["k"];
if (keyValue.BsonType != BsonType.String)
{
throw new BsonSerializationException("When using DictionaryRepresentation.Document key values must serialize as strings.");
}
return (string)keyValue;
}
// explicit interface implementations
IBsonSerializer IBsonDictionarySerializer.KeySerializer
{
get { return KeySerializer; }
}
IBsonSerializer IBsonDictionarySerializer.ValueSerializer
{
get { return ValueSerializer; }
}
}
}