mcs/class/System.Web/System.Web.SessionState_2.0/SessionStateItemCollection.cs

   1 //
   2 // System.Web.Compilation.SessionStateItemCollection
   3 //
   4 // Authors:
   5 //   Marek Habersack (grendello@gmail.com)
   6 //
   7 // (C) 2006 Marek Habersack
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30 #if NET_2_0
  31 using System.Collections;
  32 using System.Collections.Generic;
  33 using System.Collections.Specialized;
  34 using System.IO;
  35 using System.Web.Util;
  36
  37 namespace System.Web.SessionState
  38 {
  39         public sealed class SessionStateItemCollection : NameObjectCollectionBase, ISessionStateItemCollection, ICollection, IEnumerable
  40         {
  41                 bool is_dirty;
  42
  43                 static bool IsMutable (object o)
  44                 {
  45                         return (o != null && Type.GetTypeCode(o.GetType()) == TypeCode.Object);
  46                 }
  47
  48                 public SessionStateItemCollection ()
  49                 {
  50                 }
  51
  52                 internal SessionStateItemCollection (int capacity)
  53                         : base (capacity)
  54                 {
  55                 }
  56
  57                 public bool Dirty {
  58                         get { return is_dirty; }
  59                         set { is_dirty = value; }
  60                 }
  61
  62                 public object this [int index] {
  63                         get {
  64                                 object o = BaseGet (index);
  65                                 if (IsMutable (o))
  66                                         is_dirty = true;
  67                                 return o;
  68                         }
  69
  70                         set {
  71                                 BaseSet (index, value);
  72                                 is_dirty = true;
  73                         }
  74                 }
  75
  76                 public object this [string name] {
  77                         get {
  78                                 object o = BaseGet (name);
  79                                 if (IsMutable (o))
  80                                         is_dirty = true;
  81                                 return o;
  82                         }
  83
  84                         set {
  85                                 BaseSet (name, value);
  86                                 is_dirty = true;
  87                         }
  88                 }
  89
  90                 // Todo: why override this?
  91                 public override KeysCollection Keys {
  92                         get { return base.Keys; }
  93                 }
  94
  95                 public void Clear ()
  96                 {\r
  97                         if (Count > 0) {\r
  98                                 BaseClear ();\r
  99                                 is_dirty = true;\r
 100                         }
 101                 }
 102
 103                 public static SessionStateItemCollection Deserialize (BinaryReader reader)
 104                 {
 105                         int i = reader.ReadInt32 ();
 106                         SessionStateItemCollection ret = new SessionStateItemCollection (i);\r
 107                         for (; i > 0; i--)\r
 108                                 ret [reader.ReadString ()] =\r
 109                                         System.Web.Util.AltSerialization.Deserialize (reader);
 110
 111                         return ret;
 112                 }\r
 113 \r
 114                 public void Serialize (BinaryWriter writer) {\r
 115                         writer.Write (Count);\r
 116                         foreach (string key in base.Keys) {\r
 117                                 writer.Write (key);\r
 118                                 System.Web.Util.AltSerialization.Serialize (writer, BaseGet (key));\r
 119                         }\r
 120                 }
 121
 122                 // Todo: why override this?
 123                 public override IEnumerator GetEnumerator ()
 124                 {
 125                         return base.GetEnumerator ();
 126                 }
 127
 128                 public void Remove (string name)
 129                 {
 130                         BaseRemove (name);
 131                         is_dirty = true;
 132                 }
 133
 134                 public void RemoveAt (int index)
 135                 {
 136                         BaseRemoveAt (index);
 137                         is_dirty = true;
 138                 }
 139         }
 140 }
 141 #endif