class/System.ServiceModel/System.ServiceModel.Dispatcher/MessageFilterTable.cs

   1 //
   2 // System.ServiceModel.MessageFilterTable.cs
   3 //
   4 // Author: Duncan Mak (duncan@novell.com)
   5 //
   6 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining
   9 // a copy of this software and associated documentation files (the
  10 // "Software"), to deal in the Software without restriction, including
  11 // without limitation the rights to use, copy, modify, merge, publish,
  12 // distribute, sublicense, and/or sell copies of the Software, and to
  13 // permit persons to whom the Software is furnished to do so, subject to
  14 // the following conditions:
  15 //
  16 // The above copyright notice and this permission notice shall be
  17 // included in all copies or substantial portions of the Software.
  18 //
  19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  20 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  22 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  23 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  24 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  25 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26 //
  27
  28 using System;
  29 using System.Collections;
  30 using System.Collections.Generic;
  31 using System.Runtime.Serialization;
  32 using System.ServiceModel;
  33 using System.ServiceModel.Channels;
  34
  35 namespace System.ServiceModel.Dispatcher
  36 {
  37         [DataContract]
  38         public class MessageFilterTable<TFilterData> : IMessageFilterTable<TFilterData>, IDictionary<MessageFilter,TFilterData>,
  39                 ICollection<KeyValuePair<MessageFilter, TFilterData>>, IEnumerable<KeyValuePair<MessageFilter,TFilterData>>, IEnumerable
  40         {
  41
  42                 int default_priority;
  43                 Dictionary<MessageFilter, TFilterData> table;
  44                 Dictionary<MessageFilter, int> priority_list;
  45
  46                 public MessageFilterTable ()
  47                         : this (0) {} // 0 is the default
  48
  49                 public MessageFilterTable (int default_priority)
  50                 {
  51                         this.default_priority = default_priority;
  52                         table = new Dictionary<MessageFilter, TFilterData> ();
  53                         priority_list = new Dictionary<MessageFilter, int> ();
  54                 }
  55
  56                 public void Add (KeyValuePair<MessageFilter, TFilterData> item)
  57                 {
  58                         this.Add (item.Key, item.Value, default_priority);
  59                 }
  60
  61                 public void Add (MessageFilter filter, TFilterData data)
  62                 {
  63                         this.Add (filter, data, default_priority);
  64                 }
  65
  66                 public void Add (MessageFilter filter, TFilterData data, int priority)
  67                 {
  68                         table.Add (filter, data);
  69                         priority_list.Add (filter, priority);
  70                 }
  71
  72                 public void Clear ()
  73                 {
  74                         table.Clear ();
  75                         priority_list.Clear ();
  76                 }
  77
  78                 public bool Contains (KeyValuePair<MessageFilter, TFilterData> item)
  79                 {
  80                         return ContainsKey (item.Key);
  81                 }
  82
  83                 public bool ContainsKey (MessageFilter filter)
  84                 {
  85                         return table.ContainsKey (filter);
  86                 }
  87
  88                 public void CopyTo (KeyValuePair<MessageFilter, TFilterData> [] array, int index)
  89                 {
  90                         ((ICollection) table).CopyTo (array, index);
  91                 }
  92
  93                 protected virtual IMessageFilterTable<TFilterData> CreateFilterTable (MessageFilter filter)
  94                 {
  95                         return filter.CreateFilterTable<TFilterData> ();
  96                 }
  97
  98                 public IEnumerator<KeyValuePair<MessageFilter, TFilterData>> GetEnumerator ()
  99                 {
 100                         return table.GetEnumerator ();
 101                 }
 102
 103                 public int GetPriority (MessageFilter filter)
 104                 {
 105                         return priority_list [filter];
 106                 }
 107
 108                 public bool GetMatchingFilter (Message message, out MessageFilter result)
 109                 {
 110                         if (message == null)
 111                                 throw new ArgumentNullException ("message is null");
 112                         result = null;
 113
 114                         int count = 0;
 115                         foreach (MessageFilter f in table.Keys) {
 116                                 if (!f.Match (message))
 117                                         continue;
 118
 119                                 if (count > 1)
 120                                         throw new MultipleFilterMatchesException (
 121                                             "More than one filter matches.");
 122
 123                                 count++;
 124                                 result = f;
 125                         }
 126                         return count == 1;
 127                 }
 128
 129                 public bool GetMatchingFilter (MessageBuffer buffer, out MessageFilter result)
 130                 {
 131                         return GetMatchingFilter (buffer.CreateMessage (), out result);
 132                 }
 133
 134                 [MonoTODO ("Consider priority")]
 135                 public bool GetMatchingFilters (Message message, ICollection<MessageFilter> results)
 136                 {
 137                         if (message == null)
 138                                 throw new ArgumentNullException ("message is null.");
 139
 140                         int count = 0;
 141                         foreach (MessageFilter f in table.Keys)
 142                                 if (f.Match (message)) {
 143                                         results.Add (f);
 144                                         count++;
 145                                 }
 146                         return count != 0;
 147                 }
 148
 149                 public bool GetMatchingFilters (MessageBuffer buffer, ICollection<MessageFilter> results)
 150                 {
 151                         return GetMatchingFilters (buffer.CreateMessage (), results);
 152                 }
 153
 154                 [MonoTODO ("Consider priority")]
 155                 public bool GetMatchingValue (Message message, out TFilterData data)
 156                 {
 157                         if (message == null)
 158                                 throw new ArgumentNullException ("message is null");
 159                         data = default (TFilterData);
 160
 161                         int count = 0;
 162                         foreach (MessageFilter f in table.Keys) {
 163                                 if (!f.Match (message))
 164                                         continue;
 165
 166                                 if (count > 1)
 167                                         throw new MultipleFilterMatchesException (
 168                                             "More than one filter matches.");
 169
 170                                 count++;
 171                                 data = table [f];
 172                         }
 173                         return count == 1;
 174                 }
 175
 176                 public bool GetMatchingValue (MessageBuffer buffer, out TFilterData data)
 177                 {
 178                         return GetMatchingValue (buffer.CreateMessage (), out data);
 179                 }
 180
 181                 public bool GetMatchingValues (Message message, ICollection<TFilterData> results)
 182                 {
 183                         if (message == null)
 184                                 throw new ArgumentNullException ("message is null.");
 185
 186                         int count = 0;
 187                         foreach (MessageFilter f in table.Keys)
 188                                 if (f.Match (message)) {
 189                                         results.Add (table [f]);
 190                                         count++;
 191                                 }
 192                         return count != 0;
 193                 }
 194
 195                 public bool GetMatchingValues (MessageBuffer buffer, ICollection<TFilterData> results)
 196                 {
 197                         return GetMatchingValues (buffer.CreateMessage (), results);
 198                 }
 199
 200                 public bool Remove (MessageFilter filter)
 201                 {
 202                         if (filter == null)
 203                                 throw new ArgumentNullException ("filter is null.");
 204
 205                         if (!table.ContainsKey (filter))
 206                                 return false;
 207
 208                         table.Remove (filter);
 209                         priority_list.Remove (filter);
 210                         return true;
 211                 }
 212
 213                 public bool Remove (KeyValuePair<MessageFilter, TFilterData> item)
 214                 {
 215                         return Remove (item.Key);
 216                 }
 217
 218                 IEnumerator IEnumerable.GetEnumerator ()
 219                 {
 220                         return (IEnumerator) table.GetEnumerator ();
 221                 }
 222
 223                 public bool TryGetValue (MessageFilter filter, out TFilterData data)
 224                 {
 225                         return table.TryGetValue (filter, out data);
 226                 }
 227
 228                 public int Count { get { return table.Count; } }
 229
 230                 [DataMember]
 231                 public int DefaultPriority {
 232                         get { return default_priority; }
 233                         set { default_priority = value; }
 234                 }
 235
 236                 public bool IsReadOnly { get { return false; } }
 237
 238                 public TFilterData this [MessageFilter filter] {
 239                         get { return table [filter]; }
 240                         set { table [filter] = value; }
 241                 }
 242
 243                 public ICollection<MessageFilter> Keys {
 244                         get { return table.Keys; }
 245                 }
 246
 247                 public ICollection<TFilterData> Values {
 248                         get { return table.Values; }
 249                 }
 250         }
 251 }