56 lines
2.0 KiB
C#
56 lines
2.0 KiB
C#
using MongoDB.Bson;
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using MongoDB.Bson.IO;
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using MongoDB.Bson.Serialization;
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using Core.Abstractions;
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namespace DataProviders.Converters {
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public class EnumerationListSerializer<T> : IBsonSerializer<List<T>>, IBsonArraySerializer where T : Enumeration {
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private List<T> Deserialize(IBsonReader reader) {
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var type = reader.GetCurrentBsonType();
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var response = new List<T>();
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switch (type) {
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case BsonType.Array:
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reader.ReadStartArray();
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while (reader.ReadBsonType() != BsonType.EndOfDocument) {
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response.Add(Enumeration.FromValue<T>(BsonSerializer.Deserialize<int>(reader)));
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}
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reader.ReadEndArray();
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return response;
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default:
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throw new NotImplementedException($"No implementation to deserialize {type}");
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}
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}
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private void Serialize(IBsonWriter writer, List<T> values) {
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if (values != null) {
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writer.WriteStartArray();
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foreach (var value in values) {
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writer.WriteInt32(value.Id);
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}
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writer.WriteEndArray();
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}
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}
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public Type ValueType { get => typeof(List<T>); }
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public object Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args) => Deserialize(context.Reader);
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public void Serialize(BsonSerializationContext context, BsonSerializationArgs args, object value) => Serialize(context.Writer, (List<T>)value);
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List<T> IBsonSerializer<List<T>>.Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args) => Deserialize(context.Reader);
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public void Serialize(BsonSerializationContext context, BsonSerializationArgs args, List<T> value) => Serialize(context.Writer, value);
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public bool TryGetItemSerializationInfo(out BsonSerializationInfo serializationInfo) {
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string elementName = null;
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var serializer = BsonSerializer.LookupSerializer(typeof(string));
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var nominalType = typeof(string);
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serializationInfo = new BsonSerializationInfo(elementName, serializer, nominalType);
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return true;
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}
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}
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}
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