mcs/class/referencesource/System.Data/System/Data/Common/DBDataPermissionAttribute.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="DBDataPermissionAttribute.cs" company="Microsoft">
   3 //      Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 // <owner current="true" primary="true">Microsoft</owner>
   6 // <owner current="true" primary="false">Microsoft</owner>
   7 //------------------------------------------------------------------------------
   8
   9 namespace System.Data.Common {
  10
  11     using System.ComponentModel;
  12     using System.Data.Common;
  13     using System.Diagnostics;
  14     using System.Security;
  15     using System.Security.Permissions;
  16
  17     /* derived class pattern
  18     [AttributeUsage(AttributeTargets.Method | AttributeTargets.Constructor | AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Assembly, AllowMultiple = true, Inherited = false )]
  19     [Serializable] sealed public class XPermissionAttribute : DBDataPermissionAttribute {
  20         public XPermissionAttribute(SecurityAction action) : base(action) {
  21         }
  22         override public IPermission CreatePermission() {
  23             return new XPermission(this);
  24         }
  25     }
  26     */
  27
  28     [Serializable(), AttributeUsage(AttributeTargets.Method | AttributeTargets.Constructor | AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Assembly, AllowMultiple = true, Inherited = false )]
  29     public abstract class DBDataPermissionAttribute : CodeAccessSecurityAttribute { // V1.0.3300
  30         private bool _allowBlankPassword;// = false;
  31         private string _connectionString;// = ADP.StrEmpty;
  32         private string _restrictions;// = ADP.StrEmpty;
  33         private KeyRestrictionBehavior _behavior;// = KeyRestrictionBehavior.AllowOnly;
  34
  35         protected DBDataPermissionAttribute(SecurityAction action) : base(action) {
  36         }
  37
  38         public bool AllowBlankPassword { // V1.0.3300
  39             get {
  40                 return _allowBlankPassword;
  41             }
  42             set {
  43                 _allowBlankPassword = value;
  44             }
  45         }
  46
  47         public string ConnectionString { // V1.0.5000
  48             get {
  49                 string value = _connectionString;
  50                 return ((null != value) ? value : String.Empty);
  51             }
  52             set {
  53                 _connectionString = value;
  54             }
  55         }
  56
  57         public KeyRestrictionBehavior KeyRestrictionBehavior { // V1.0.5000, default AllowOnly
  58             get {
  59                 return _behavior;
  60             }
  61             set {
  62                 switch(value) {
  63                 case KeyRestrictionBehavior.PreventUsage:
  64                 case KeyRestrictionBehavior.AllowOnly:
  65                     _behavior = value;
  66                     break;
  67                 default:
  68                     throw ADP.InvalidKeyRestrictionBehavior(value);
  69                 }
  70             }
  71         }
  72
  73         public string KeyRestrictions { // V1.0.5000
  74             get {
  75                 string value = _restrictions;
  76                 return (null != value) ? value : ADP.StrEmpty;
  77             }
  78             set {
  79                 _restrictions = value;
  80             }
  81         }
  82
  83         [ EditorBrowsableAttribute(EditorBrowsableState.Never) ]
  84         public bool ShouldSerializeConnectionString() { // V1.2.3300
  85             return (null != _connectionString);
  86         }
  87
  88         [ EditorBrowsableAttribute(EditorBrowsableState.Never) ]
  89         public bool ShouldSerializeKeyRestrictions() { // V1.2.3300
  90             return (null != _restrictions);
  91         }
  92     }
  93 }