62 lines
1.7 KiB
C#
62 lines
1.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Dynamic;
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using System.Reflection.Emit;
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using System.Reflection;
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using System.Text;
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namespace SqlSugar
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{
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internal static class OneToOneGlobalInstanceRegistry
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{
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private static readonly Dictionary<Type, object> _instances = new Dictionary<Type, object>();
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private static readonly object _lock = new object();
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public static Dictionary<Type, object> Instances => _instances;
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public static bool IsAny()
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{
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return _instances?.Count>0;
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}
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public static bool IsNavigationInitializerCreated(object instance)
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{
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if (instance == null)
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return false;
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Type type = instance.GetType();
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lock (_lock)
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{
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return _instances.ContainsKey(type) && _instances[type] == instance;
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}
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}
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public static void RegisterInstance(Type type, object instance)
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{
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lock (_lock)
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{
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if (!_instances.ContainsKey(type))
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{
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_instances[type] = instance;
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}
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}
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}
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}
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public class OneToOneInitializer<T> where T : new()
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{
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public static implicit operator T(OneToOneInitializer<T> initializer)
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{
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Type type = typeof(T);
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if (!OneToOneGlobalInstanceRegistry.Instances.ContainsKey(type))
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{
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T instance = new T();
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OneToOneGlobalInstanceRegistry.RegisterInstance(type, instance);
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}
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return (T)OneToOneGlobalInstanceRegistry.Instances[type];
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}
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}
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}
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