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added a json extension to mlem.data for easy json property modification
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MLEM.Data/Json/JsonExtensions.cs
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40
MLEM.Data/Json/JsonExtensions.cs
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using System;
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using System.Reflection;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Serialization;
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namespace MLEM.Data.Json {
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/// <summary>
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/// A set of extensions for dealing with the Newtonsoft.JSON <see cref="JsonSerializer"/>.
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/// </summary>
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public static class JsonExtensions {
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/// <summary>
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/// Changes the <see cref="JsonSerializer.ContractResolver"/> to a contract resolver that queries each newly created <see cref="JsonProperty"/> and allows modifying it easily.
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/// This removes the need to create a new contract resolver class for modifying created json properties.
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/// </summary>
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/// <param name="serializer">The serializer to which to add the property modifier</param>
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/// <param name="propertyModifier">A function that takes in the json property and allows returning a modified property (or the same one)</param>
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/// <returns></returns>
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public static JsonSerializer SetPropertyModifier(this JsonSerializer serializer, Func<JsonProperty, JsonProperty> propertyModifier) {
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serializer.ContractResolver = new PropertyModifierResolver(propertyModifier);
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return serializer;
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}
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private class PropertyModifierResolver : DefaultContractResolver {
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private readonly Func<JsonProperty, JsonProperty> propertyModifier;
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public PropertyModifierResolver(Func<JsonProperty, JsonProperty> propertyModifier) {
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this.propertyModifier = propertyModifier;
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}
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protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization) {
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var property = base.CreateProperty(member, memberSerialization);
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return this.propertyModifier(property);
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}
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}
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}
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}
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