mirror of https://github.com/Squidex/squidex.git
Sebastian Stehle
8 years ago
21 changed files with 61 additions and 177 deletions
@ -1,141 +0,0 @@ |
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// ==========================================================================
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// Squidex Headless CMS
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// ==========================================================================
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// Copyright (c) Squidex UG (haftungsbeschränkt)
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// All rights reserved. Licensed under the MIT license.
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// ==========================================================================
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Reflection; |
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using Newtonsoft.Json; |
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using Newtonsoft.Json.Linq; |
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using NJsonSchema.Annotations; |
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#pragma warning disable SA1306 // Field names must begin with lower-case letter
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namespace Squidex.Areas.Api.Controllers |
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{ |
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public class JsonInheritanceConverter : JsonConverter |
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{ |
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private readonly string discriminator; |
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private readonly Dictionary<string, Type> mapTypeToName = new Dictionary<string, Type>(StringComparer.OrdinalIgnoreCase); |
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private readonly Dictionary<Type, string> mapNameToType = new Dictionary<Type, string>(); |
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[ThreadStatic] |
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private static bool IsReading; |
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[ThreadStatic] |
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private static bool IsWriting; |
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public string DiscriminatorName |
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{ |
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get { return discriminator; } |
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} |
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public override bool CanWrite |
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{ |
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get |
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{ |
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if (!IsWriting) |
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{ |
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return true; |
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} |
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return IsWriting = false; |
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} |
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} |
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public override bool CanRead |
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{ |
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get |
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{ |
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if (!IsReading) |
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{ |
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return true; |
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} |
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return IsReading = false; |
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} |
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} |
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public JsonInheritanceConverter(string discriminator, Type baseType) |
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: this(discriminator, baseType, null) |
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{ |
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} |
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protected JsonInheritanceConverter(string discriminator, Type baseType, IReadOnlyDictionary<string, Type> subTypes = null) |
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{ |
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this.discriminator = discriminator; |
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if (subTypes != null) |
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{ |
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foreach (var subType in subTypes) |
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{ |
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mapNameToType[subType.Value] = subType.Key; |
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mapTypeToName[subType.Key] = subType.Value; |
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} |
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} |
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else |
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{ |
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foreach (var type in baseType.Assembly.GetTypes().Where(x => x != baseType && baseType.IsAssignableFrom(x))) |
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{ |
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var name = type.GetTypeInfo().GetCustomAttribute<JsonSchemaAttribute>()?.Name ?? type.Name; |
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mapNameToType[type] = name; |
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mapTypeToName[name] = type; |
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} |
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} |
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} |
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public override bool CanConvert(Type objectType) |
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{ |
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return true; |
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} |
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public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) |
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{ |
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IsWriting = true; |
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try |
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{ |
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var jsonObject = JObject.FromObject(value, serializer); |
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jsonObject.AddFirst(new JProperty(discriminator, mapNameToType[value.GetType()])); |
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writer.WriteToken(jsonObject.CreateReader()); |
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} |
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finally |
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{ |
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IsWriting = false; |
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} |
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} |
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public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) |
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{ |
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IsReading = true; |
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try |
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{ |
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var jsonObject = serializer.Deserialize<JObject>(reader); |
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var subName = jsonObject[discriminator]?.Value<string>(); |
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if (subName == null) |
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{ |
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return null; |
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} |
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if (!mapTypeToName.TryGetValue(subName, out var subType)) |
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{ |
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throw new InvalidOperationException($"Could not find subtype of '{objectType.Name}' with discriminator '{subName}'."); |
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} |
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return serializer.Deserialize(jsonObject.CreateReader(), subType); |
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} |
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finally |
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{ |
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IsReading = false; |
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} |
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} |
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} |
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} |
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@ -0,0 +1,49 @@ |
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// ==========================================================================
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// Squidex Headless CMS
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// ==========================================================================
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// Copyright (c) Squidex UG (haftungsbeschränkt)
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// All rights reserved. Licensed under the MIT license.
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// ==========================================================================
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using NJsonSchema.Converters; |
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namespace Squidex.Areas.Api.Controllers |
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{ |
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public class MyJsonInheritanceConverter : JsonInheritanceConverter |
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{ |
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private readonly IDictionary<string, Type> mapping; |
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private readonly Type baseType; |
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public MyJsonInheritanceConverter(string discriminator, Type baseType) |
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: base(baseType, discriminator) |
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{ |
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this.baseType = baseType; |
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} |
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public MyJsonInheritanceConverter(string discriminator, Type baseType, IDictionary<string, Type> mapping) |
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: this(discriminator, baseType) |
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{ |
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this.mapping = mapping; |
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} |
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public override string GetDiscriminatorValue(Type type) |
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{ |
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var result = type.Name; |
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if (baseType != null) |
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{ |
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var baseName = baseType.Name; |
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if (result.EndsWith(baseName, StringComparison.CurrentCulture)) |
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{ |
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return result.Substring(0, result.Length - baseName.Length); |
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} |
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} |
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return mapping?.FirstOrDefault(x => x.Value == type).Key ?? result; |
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} |
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} |
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} |
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