mcs/class/System.Data.OracleClient/System.Data.OracleClient/OracleString.cs

   1 //
   2 // OracleString.cs
   3 //
   4 // Part of the Mono class libraries at
   5 // mcs/class/System.Data.OracleClient/System.Data.OracleClient
   6 //
   7 // Assembly: System.Data.OracleClient.dll
   8 // Namespace: System.Data.OracleClient
   9 //
  10 // Author: Tim Coleman <tim@timcoleman.com>
  11 //
  12 // Copyright (C) Tim Coleman, 2003
  13 //
  14 // Licensed under the MIT/X11 License.
  15 //
  16
  17 using System;
  18 using System.Data.SqlTypes;
  19
  20 namespace System.Data.OracleClient {
  21         public struct OracleString : IComparable, INullable
  22         {
  23                 #region Fields
  24
  25                 string value;
  26                 bool notNull;
  27
  28                 public static readonly OracleString Empty = new OracleString (String.Empty);
  29                 public static readonly OracleString Null = new OracleString ();
  30
  31                 #endregion // Fields
  32
  33                 #region Constructors
  34
  35                 public OracleString (string s)
  36                 {
  37                         value = s;
  38                         notNull = true;
  39                 }
  40
  41                 #endregion // Constructors
  42
  43                 #region Properties
  44
  45                 public bool IsNull {
  46                         get { return !notNull; }
  47                 }
  48
  49                 public string Value {
  50                         get { return value; }
  51                 }
  52
  53                 #endregion // Properties
  54
  55                 #region Methods
  56
  57                 public int CompareTo (object value)
  58                 {
  59                         if (value == null)
  60                                 return 1;
  61                         else if (!(value is OracleString))
  62                                 throw new ArgumentException ("Value is not a System.Data.OracleClient.OracleString");
  63                         else if (((OracleString) value).IsNull)
  64                                 return 1;
  65                         else
  66                                 return this.value.CompareTo (((OracleString) value).Value);
  67                 }
  68
  69                 #endregion // Methods
  70         }
  71 }