CodeArt入门教程（四）

  1 using System;
  2 
  3 using CodeArt.DomainDriven;
  4 
  5 namespace AccountSubsystem
  6 {
  7     /// <summary>
  8     /// 权限对象
  9     /// </summary>
 10     [ObjectRepository(typeof(IPermissionRepository))]
 11     [ObjectValidator(typeof(PermissionSpecification))]
 12     public class Permission : AggregateRoot<Permission, Guid>
 13     {
 14         internal static readonly DomainProperty NameProperty = DomainProperty.Register<string, Permission>("Name");
 15 
 16         /// <summary>
 17         /// 权限名称
 18         /// </summary>
 19         [PropertyRepository()]
 20         [NotEmpty()]
 21         [StringLength(2, 25)]
 22         public string Name
 23         {
 24             get
 25             {
 26                 return GetValue<string>(NameProperty);
 27             }
 28             set
 29             {
 30                 SetValue(NameProperty, value);
 31             }
 32         }
 33 
 34 
 35         internal static readonly DomainProperty MarkedCodeProperty = DomainProperty.Register<string, Permission>("MarkedCode");
 36 
 37 
 38         /// <summary>
 39         /// <para>权限的唯一标示，可以由用户设置</para>
 40         /// <para>可以通过唯一标示找到权限对象</para>
 41         /// <para>该属性可以为空</para>
 42         /// </summary>
 43         [PropertyRepository()]
 44         [StringLength(0, 50)]
 45         public string MarkedCode
 46         {
 47             get
 48             {
 49                 return GetValue<string>(MarkedCodeProperty);
 50             }
 51             set
 52             {
 53                 SetValue(MarkedCodeProperty, value);
 54             }
 55         }
 56 
 57         /// <summary>
 58         /// 是否定义了标识码
 59         /// </summary>
 60         public bool DeclareMarkedCode
 61         {
 62             get
 63             {
 64                 return !string.IsNullOrEmpty(this.MarkedCode);
 65             }
 66         }
 67 
 68 
 69         private static readonly DomainProperty DescriptionProperty = DomainProperty.Register<string, Permission>("Description");
 70 
 71         /// <summary>
 72         /// <para>描述</para>
 73         /// </summary>
 74         [PropertyRepository()]
 75         [StringLength(0, 200)]
 76         public string Description
 77         {
 78             get
 79             {
 80                 return GetValue<string>(DescriptionProperty);
 81             }
 82             set
 83             {
 84                 SetValue(DescriptionProperty, value);
 85             }
 86         }
 87 
 88         [ConstructorRepository()]
 89         public Permission(Guid id)
 90             : base(id)
 91         {
 92             this.OnConstructed();
 93         }
 94 
 95         #region 空对象
 96 
 97         private class PermissionEmpty : Permission
 98         {
 99             public PermissionEmpty()
100                 : base(Guid.Empty)
101             {
102                 this.OnConstructed();
103             }
104 
105             public override bool IsEmpty()
106             {
107                 return true;
108             }
109         }
110 
111         public static readonly Permission Empty = new PermissionEmpty();
112 
113         #endregion
114     }
115 }