using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Core.Mes.Client.Comm.Attribute
{
	/// <summary>
	/// 用来标识实体类的属性是否可以为空
	/// </summary>
	[AttributeUsage(AttributeTargets.Property, AllowMultiple = false)]
    public class NullableAttribute : System.Attribute
	{
		private bool _nullable = true;

		/// <summary>
		/// 是否允许为空
		/// </summary>
		public bool Nullable
		{
			get { return _nullable; }
			set { _nullable = value; }
		}

		/// <summary>
		/// 是否为空特性构造函数
		/// </summary>
		/// <param name="nullable">是否允许为空</param>
		public NullableAttribute(bool nullable)
		{
			_nullable = nullable;
		}

	}
}