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56 lines
1.8 KiB
56 lines
1.8 KiB
using Apewer;
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using Apewer.Internals;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Reflection;
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namespace Apewer.Source
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{
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/// <summary>数据库记录通用字段模型。</summary>
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/// <remarks>带有 Independent 特性的模型不包含此类型声明的属性。</remarks>
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[Serializable]
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public abstract class Record : IRecord
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{
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/// <summary>记录主键，一般使用 GUID 的字符串形式。</summary>
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/// <remarks>
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/// <para>注：</para>
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/// <para>1. 默认长度为 32，需要修改长度时应该重写此属性；</para>
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/// <para>2. 带有 Independent 特性的模型不包含此属性。</para>
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/// </remarks>
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[Column("_key", ColumnType.NVarChar, 32)]
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public virtual string Key { get; set; }
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/// <summary>记录的标记，Int64 类型，区分记录的状态。</summary>
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/// <remarks>带有 Independent 特性的模型不包含此属性。</remarks>
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[Column("_flag", ColumnType.Integer)]
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public virtual long Flag { get; set; }
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/// <summary>重置 Key 属性的值。</summary>
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public virtual void ResetKey() => Key = TextUtility.Key();
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/// <summary></summary>
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public Record()
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{
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ResetKey();
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Flag = DefaultFlag;
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}
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#region static
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/// <summary>创建 Record 对象时的默认 Flag 值。</summary>
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public static long DefaultFlag { get; set; }
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#endregion
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#region 运算符。
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/// <summary>从 Record 到 Boolean 的隐式转换，判断 Record 对象不为 NULL。</summary>
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public static implicit operator bool(Record instance) => instance != null;
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#endregion
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}
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}
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