2 // System.Web.HttpVaryByParams.cs
5 // Chris Toshok (toshok@novell.com)
9 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
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:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
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.
31 using System.Collections;
32 using System.Security.Permissions;
35 namespace System.Web {
37 // CAS - no InheritanceDemand here as the class is sealed
38 [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
39 public sealed class HttpCacheVaryByParams {
44 internal HttpCacheVaryByParams ()
46 /* the parameter names are meant to be case insensitive */
48 parms = new Hashtable (StringComparer.InvariantCultureIgnoreCase);
50 parms = new Hashtable(CaseInsensitiveHashCodeProvider.Default,
51 CaseInsensitiveComparer.Default);
55 internal string[] GetParamNames ()
59 names = new string [parms.Count];
61 parms.Keys.CopyTo (names, 0);
66 internal BaseResponseHeader GetResponseHeader ()
68 StringBuilder builder = new StringBuilder ("");
70 foreach (string parm in parms.Keys) {
71 builder.Append (parm);
72 builder.Append ("; ");
75 if (builder.Length == 0)
78 return new UnknownResponseHeader ("Vary", builder.ToString());
81 public bool IgnoreParams {
90 public bool this [ string param ] {
93 throw new ArgumentNullException ();
95 return parms.Contains (param);
99 throw new ArgumentNullException ();
101 ignore_parms = false;
103 if (!parms.Contains (param))
104 parms.Add (param, true);
106 parms.Remove (param);