-
Notifications
You must be signed in to change notification settings - Fork 1.2k
/
GeoJsonLinkedCoordinateReferenceSystemSerializer.cs
125 lines (113 loc) · 4.64 KB
/
GeoJsonLinkedCoordinateReferenceSystemSerializer.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
/* 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 MongoDB.Bson.IO;
using MongoDB.Bson.Serialization;
using MongoDB.Bson.Serialization.Serializers;
namespace MongoDB.Driver.GeoJsonObjectModel.Serializers
{
/// <summary>
/// Represents a serializer for a GeoJsonLinkedCoordinateReferenceSystem value.
/// </summary>
public class GeoJsonLinkedCoordinateReferenceSystemSerializer : ClassSerializerBase<GeoJsonLinkedCoordinateReferenceSystem>
{
// private constants
private static class Flags
{
public const long Type = 1;
public const long Properties = 2;
}
private static class PropertiesFlags
{
public const long HRef = 1;
public const long Type = 2;
}
// private fields
private readonly SerializerHelper _helper;
private readonly SerializerHelper _propertiesHelper;
// constructors
/// <summary>
/// Initializes a new instance of the <see cref="GeoJsonLinkedCoordinateReferenceSystemSerializer"/> class.
/// </summary>
public GeoJsonLinkedCoordinateReferenceSystemSerializer()
{
_helper = new SerializerHelper
(
new SerializerHelper.Member("type", Flags.Type),
new SerializerHelper.Member("properties", Flags.Properties)
);
_propertiesHelper = new SerializerHelper
(
new SerializerHelper.Member("href", PropertiesFlags.HRef),
new SerializerHelper.Member("type", PropertiesFlags.Type, isOptional: true)
);
}
// protected methods
/// <summary>
/// Deserializes a class.
/// </summary>
/// <param name="context">The deserialization context.</param>
/// <param name="args">The deserialization args.</param>
/// <returns>An object.</returns>
protected override GeoJsonLinkedCoordinateReferenceSystem DeserializeValue(BsonDeserializationContext context, BsonDeserializationArgs args)
{
var bsonReader = context.Reader;
string type = null, href = null, hrefType = null;
_helper.DeserializeMembers(context, (elementName, flag) =>
{
switch (flag)
{
case Flags.Type: type = bsonReader.ReadString(); break;
case Flags.Properties:
_propertiesHelper.DeserializeMembers(context, (propertiesElementName, propertiesFlag) =>
{
switch (propertiesFlag)
{
case PropertiesFlags.HRef: href = bsonReader.ReadString(); break;
case PropertiesFlags.Type: hrefType = bsonReader.ReadString(); break;
}
});
break;
}
});
if (type != "link")
{
var message = string.Format("Expected type to be 'link'.");
throw new FormatException(message);
}
return new GeoJsonLinkedCoordinateReferenceSystem(href, hrefType);
}
/// <summary>
/// Serializes a value.
/// </summary>
/// <param name="context">The serialization context.</param>
/// <param name="args">The serialization args.</param>
/// <param name="value">The value.</param>
protected override void SerializeValue(BsonSerializationContext context, BsonSerializationArgs args, GeoJsonLinkedCoordinateReferenceSystem value)
{
var bsonWriter = context.Writer;
bsonWriter.WriteStartDocument();
bsonWriter.WriteString("type", "link");
bsonWriter.WriteStartDocument("properties");
bsonWriter.WriteString("href", value.HRef);
if (value.HRefType != null)
{
bsonWriter.WriteString("type", value.HRefType);
}
bsonWriter.WriteEndDocument();
bsonWriter.WriteEndDocument();
}
}
}