mcs/class/System.Web.Services/System.Web.Services.Discovery/DiscoveryReference.cs

   1 // \r
   2 // System.Web.Services.Discovery.DiscoveryReference.cs\r
   3 //\r
   4 // Author:\r
   5 //   Dave Bettin (javabettin@yahoo.com)\r
   6 //   Lluis Sanchez Gual (lluis@ximian.com)\r
   7 //\r
   8 // Copyright (C) Dave Bettin, 2002\r
   9 //\r
  10 \r
  11 using System.IO;\r
  12 using System.Xml.Serialization;\r
  13 \r
  14 namespace System.Web.Services.Discovery {\r
  15         public abstract class DiscoveryReference {\r
  16                 \r
  17                 #region Fields\r
  18 \r
  19                 private string defaultFilename;\r
  20                 private DiscoveryClientProtocol clientProtocol;\r
  21 \r
  22                 #endregion // Fields\r
  23 \r
  24                 #region Constructors\r
  25 \r
  26                 protected DiscoveryReference () \r
  27                 {\r
  28                 }\r
  29                 \r
  30                 #endregion // Constructors\r
  31 \r
  32                 #region Properties\r
  33 \r
  34                 [XmlIgnore]\r
  35                 public DiscoveryClientProtocol ClientProtocol {\r
  36                         get { return clientProtocol; }                  \r
  37                         set { clientProtocol = value; }\r
  38                         \r
  39                 }\r
  40                 \r
  41                 public virtual string DefaultFilename {\r
  42                         get { return FilenameFromUrl (Url); }                   \r
  43                 }\r
  44                 \r
  45                 [XmlIgnore]\r
  46                 public abstract string Url {\r
  47                         get;            \r
  48                         set;\r
  49                 }\r
  50                 \r
  51                 #endregion // Properties\r
  52 \r
  53                 #region Methods\r
  54 \r
  55                 protected static string FilenameFromUrl (string url)\r
  56                 {\r
  57                         int i = url.LastIndexOf ("/");\r
  58                         if (i != -1) url = url.Substring (i+1);\r
  59                         \r
  60                         i = url.IndexOfAny (new char[] {'.','?','\\'});\r
  61                         if (i != -1) url = url.Substring (0,i);\r
  62                         \r
  63                         System.Text.StringBuilder sb = new System.Text.StringBuilder ();\r
  64                         for (int n=0; n<url.Length; n++)\r
  65                                 if (Char.IsLetterOrDigit (url[n]) || url[n] == '_') sb.Append (url[n]);\r
  66                                 \r
  67                         return sb.ToString ();\r
  68                 }\r
  69                 \r
  70                 public abstract object ReadDocument (Stream stream);\r
  71                 \r
  72                 public void Resolve () \r
  73                 {\r
  74                         if (clientProtocol == null) \r
  75                                 throw new InvalidOperationException ("The ClientProtocol property is a null reference");\r
  76                         \r
  77                         if (clientProtocol.Documents.Contains (Url))    // Already resolved\r
  78                                 return;\r
  79                         \r
  80                         string contentType = null;\r
  81                         string url = Url;\r
  82                         Stream stream = clientProtocol.Download (ref url, ref contentType);\r
  83                         Resolve (contentType, stream);\r
  84                 }\r
  85                 \r
  86                 protected internal abstract void Resolve (string contentType, Stream stream);\r
  87                 \r
  88                 public abstract void WriteDocument (object document, Stream stream);            \r
  89 \r
  90                 #endregion // Methods\r
  91         }\r
  92 }