using System;
using System.Reflection;

namespace Zhaizj.Framework.ORM
{

    /// <summary>
    /// 检查对象属性是否已经赋值，如果是字符串类型，empty的字符串也是不合法的
    /// </summary>
    [Serializable]
    public class NotZeroAttribute : ValidationAttribute
    {

        public NotZeroAttribute()
        {
        }

        public NotZeroAttribute(String msg)
        {
            base.Message = msg;
        }

        public override void Validate(String action, IEntity target, EntityPropertyInfo info, Result result)
        {
            Object obj = target.get(info.Name);
            Boolean isInt = false;
            if (info.Type == typeof(int))
            {
                if (obj == null)
                {
                    isInt = true;
                }
                else if (Convert.ToInt32(obj) == 0)
                {
                    isInt = true;
                }
            }
            else if (Convert.ToInt32(obj) == 0)
            {
                isInt = true;
            }
            if (isInt)
            {
                if (strUtil.HasText(this.Message))
                {
                    result.Add(this.Message);
                }
                else
                {
                    EntityInfo ei = Entity.GetInfo(target);
                    String str = "[" + ei.FullName + "] : property \"" + info.Name + "\" ";
                    result.Add(str + "can not be null");
                }
            }
        }

    }
}