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IdReferenceResolver.cs
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IdReferenceResolver.cs
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// <copyright file="IdReferenceResolver.cs" company="MUnique">
// Licensed under the MIT License. See LICENSE file in the project root for full license information.
// </copyright>
namespace MUnique.OpenMU.Persistence.EntityFramework.Json
{
using System;
using System.Collections.Generic;
using Newtonsoft.Json.Serialization;
/// <summary>
/// A reference resolver, which resolves based on $id references which are values of <see cref="IIdentifiable.Id"/>.
/// </summary>
public class IdReferenceResolver : IReferenceResolver
{
private readonly IDictionary<Guid, IIdentifiable> objects = new Dictionary<Guid, IIdentifiable>();
/// <inheritdoc />
public object ResolveReference(object context, string reference)
{
Guid id = new Guid(reference);
var success = this.objects.TryGetValue(id, out IIdentifiable obj);
if (!success)
{
return null;
}
return obj;
}
/// <inheritdoc/>
public string GetReference(object context, object value)
{
var p = (IIdentifiable)value;
this.objects[p.Id] = p;
return p.Id.ToString();
}
/// <inheritdoc/>
public bool IsReferenced(object context, object value)
{
var p = (IIdentifiable)value;
return this.objects.ContainsKey(p.Id);
}
/// <inheritdoc/>
public void AddReference(object context, string reference, object value)
{
Guid id = new Guid(reference);
this.objects[id] = (IIdentifiable)value;
}
}
}