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MLEM/MLEM.Data/Json/JsonTypeSafeGenericDataHolder.cs
2022-06-17 18:23:47 +02:00

45 lines
1.6 KiB
C#

using System;
using System.Collections.Generic;
using System.Runtime.Serialization;
using MLEM.Misc;
using Newtonsoft.Json;
namespace MLEM.Data.Json {
/// <summary>
/// An <see cref="IGenericDataHolder"/> represents an object that can hold generic key-value based data.
/// This class uses <see cref="JsonTypeSafeWrapper"/> for each object stored to ensure that objects with a custom <see cref="JsonConverter"/> get deserialized as an instance of their original type if <see cref="JsonSerializer.TypeNameHandling"/> is not set to <see cref="TypeNameHandling.None"/>.
/// </summary>
[DataContract]
public class JsonTypeSafeGenericDataHolder : IGenericDataHolder {
[DataMember(EmitDefaultValue = false)]
private Dictionary<string, JsonTypeSafeWrapper> data;
/// <inheritdoc />
public void SetData(string key, object data) {
if (data == default) {
if (this.data != null)
this.data.Remove(key);
} else {
if (this.data == null)
this.data = new Dictionary<string, JsonTypeSafeWrapper>();
this.data[key] = JsonTypeSafeWrapper.Of(data);
}
}
/// <inheritdoc />
public T GetData<T>(string key) {
if (this.data != null && this.data.TryGetValue(key, out var val))
return (T) val.Value;
return default;
}
/// <inheritdoc />
public IReadOnlyCollection<string> GetDataKeys() {
if (this.data == null)
return Array.Empty<string>();
return this.data.Keys;
}
}
}