mcs/class/System.Web/System.Web.Configuration/HandlerFactoryConfiguration.cs

   1 //
   2 // System.Web.Configuration.HandlerFactoryConfiguration
   3 //
   4 // Authors:
   5 //      Patrik Torstensson (ptorsten@hotmail.com)
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //
   8 // (C) 2002 Ximian, Inc (http://www.ximian.com)
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.Collections;
  33
  34 namespace System.Web.Configuration
  35 {
  36         class HandlerFactoryConfiguration
  37         {
  38                 ArrayList mappings;
  39                 Hashtable _cache;
  40                 int ownIndex;
  41
  42                 public HandlerFactoryConfiguration () : this (null)
  43                 {
  44                 }
  45
  46                 public HandlerFactoryConfiguration (HandlerFactoryConfiguration parent)
  47                 {
  48                         if (parent != null)
  49                                 mappings = new ArrayList (parent.mappings);
  50                         else
  51                                 mappings = new ArrayList ();
  52
  53                         _cache = Hashtable.Synchronized(new Hashtable());
  54                         ownIndex = mappings.Count;
  55                 }
  56
  57                 public void Add (HandlerItem mapping)
  58                 {
  59                         mappings.Add (mapping);
  60                 }
  61
  62                 public HandlerItem Remove (string verb, string path)
  63                 {
  64                         int i = GetIndex (verb, path);
  65                         if (i == -1)
  66                                 return null;
  67
  68                         HandlerItem item = (HandlerItem) mappings [i];
  69                         mappings.RemoveAt (i);
  70                         if (_cache.ContainsKey(verb+"+"+path))
  71                                 _cache.Remove(verb+"+"+path);
  72                         return item;
  73                 }
  74
  75                 public void Clear ()
  76                 {
  77                         mappings.Clear ();
  78                         _cache.Clear();
  79                 }
  80
  81                 public HandlerItem FindHandler (string verb, string path)
  82                 {
  83                         int i = GetIndex (verb, path);
  84                         if (i == -1)
  85                                 return null;
  86
  87                         return (HandlerItem) mappings [i];
  88                 }
  89
  90                 int GetIndex (string verb, string path)
  91                 {
  92                         string cahceKey = verb+"+"+path;
  93                         object answer = _cache[cahceKey];
  94                         if (answer != null)
  95                                 return (int)answer;
  96                         int end = mappings.Count;
  97
  98                         for (int i = ownIndex; i < end; i++) {
  99                                 HandlerItem item = (HandlerItem) mappings [i];
 100                                 if (item.IsMatch (verb, path))
 101                                 {
 102                                         _cache[cahceKey] = i;
 103                                         return i;
 104                                 }
 105                         }
 106
 107                         // parent mappings
 108                         end = ownIndex;
 109                         for (int i = 0; i < end; i++) {
 110                                 HandlerItem item = (HandlerItem) mappings [i];
 111                                 if (item.IsMatch (verb, path))
 112                                 {
 113                                         _cache[cahceKey] = i;
 114                                         return i;
 115                                 }
 116                         }
 117                         _cache[cahceKey] = -1;
 118                         return -1;
 119                 }
 120         }
 121 }
 122