145 lines
3.5 KiB
C#
145 lines
3.5 KiB
C#
using System;
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namespace Easy4net.CustomAttributes
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{
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/// <summary>
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/// 数据库表字段特性
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/// </summary>
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[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property,
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AllowMultiple = false, Inherited = false)]
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public class ColumnAttribute : Attribute
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{
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/// <summary>
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/// 字段信息 例如：varchar(255) default ''
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/// </summary>
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public string TypeInfo { get; set; }
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/// <summary>
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/// 是否为主键
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/// </summary>
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public bool PrimaryKey { get; set; }
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/// <summary>
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/// 字段名
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/// </summary>
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private string _Name = string.Empty;
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/// <summary>
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/// 是否唯一
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/// </summary>
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private bool _IsUnique = false;
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/// <summary>
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/// 是否允许为空
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/// </summary>
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private bool _IsNull = true;
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/// <summary>
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/// 是否插入到表中
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/// </summary>
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private bool _IsInsert = true;
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/// <summary>
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/// 是否修改到表中
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/// </summary>
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private bool _IsUpdate = true;
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/// <summary>
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/// 在所有操作中是否忽略此字段
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/// </summary>
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private bool _Ignore = false;
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/// <summary>
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/// 表字段名
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/// </summary>
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public string Name
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{
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get { return _Name; }
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set { _Name = value; }
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}
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/// <summary>
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/// 是否是唯一的,默认为否
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/// </summary>
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public bool IsUnique
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{
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get { return _IsUnique; }
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set { _IsUnique = value; }
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}
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/// <summary>
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/// 此字段是否允许为空,默认允许为空
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/// </summary>
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public bool IsNull
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{
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get { return _IsNull; }
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set { _IsNull = value; }
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}
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/// <summary>
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/// 在执行插入操作时此是否插入此字段值,默认为插入
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/// </summary>
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public bool IsInsert
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{
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get { return _IsInsert; }
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set { _IsInsert = value; }
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}
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/// <summary>
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/// 在执行更新操作时是否更新此字段值,默认为更新
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/// </summary>
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public bool IsUpdate
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{
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get { return _IsUpdate; }
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set { _IsUpdate = value; }
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}
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/// <summary>
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/// 在执行所有操作时是否忽略此字段,默认不忽略
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/// </summary>
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public bool Ignore
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{
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get { return _Ignore; }
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set { _Ignore = value; }
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}
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/// <summary>
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/// 创建一个空的字段特性
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/// </summary>
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public ColumnAttribute()
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{
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}
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/// <summary>
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/// 创建一个指定字段名的字段特性
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/// </summary>
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/// <param name="aName">字段名</param>
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public ColumnAttribute(string aName)
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: this()
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{
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this.Name = aName;
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}
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/// <summary>
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/// 创建一个制定字段名的字段特性
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/// </summary>
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/// <param name="aName">字段名</param>
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/// <param name="aIgnore">在执行数据操作时是否忽略此字段</param>
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public ColumnAttribute(string aName, bool aIgnore)
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: this(aName)
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{
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this.Ignore = aIgnore;
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}
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/// <summary>
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/// 创建一个制定字段名的字段特性
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/// </summary>
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/// <param name="aName">字段名</param>
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/// <param name="aInsert">此字段是否参与插入操作</param>
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/// <param name="aUpdate">此字段是否参与更新操作</param>
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public ColumnAttribute(string aName, bool aInsert, bool aUpdate)
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: this(aName)
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{
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this.IsInsert = aInsert;
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this.IsUpdate = aUpdate;
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}
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}
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}
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