mcs/class/System.Data/System.Data.Common/ConnectionStringsSectionHandler.cs

   1 //
   2 // System.Data.Common.ConnectionStringsSectionHandler.cs
   3 //
   4 // Author:
   5 //   Sureshkumar T (tsureshkumar@novell.com)
   6 //
   7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 #if NET_2_0
  30
  31 using System.IO;
  32 using System.Xml;
  33 using System.Xml.Serialization;
  34 using System.Globalization;
  35 using System.Configuration;
  36
  37 namespace System.Data.Common {
  38
  39         /// <summary>
  40         /// This is a handler class for the configuration section <b>connectionStrings</b>.
  41         /// This handler is a temporary solution till the new 2.0 configuration API is supported
  42         /// in mono.
  43         /// </summary>
  44         public class ConnectionStringsSectionHandler : IConfigurationSectionHandler
  45         {
  46                 #region Constructors
  47
  48                 public ConnectionStringsSectionHandler ()
  49                 {
  50                 }
  51
  52                 #endregion // Constructors
  53
  54                 #region Methods
  55
  56                 public virtual object Create (object parent, object configContext, XmlNode section)
  57                 {
  58                         ConnectionStringsSection csSection  = new ConnectionStringsSection ();
  59                         ConnectionStringSettingsCollection csList = csSection.ConnectionStrings;
  60                         foreach (XmlNode addNode in section.SelectNodes (".//add")) {
  61                                 if (addNode.NodeType != XmlNodeType.Element)
  62                                         continue;
  63                                 string name;
  64                                 string providerName;
  65                                 string connectionString;
  66
  67                                 name = GetAttributeValue (addNode, "name");
  68                                 providerName = GetAttributeValue (addNode, "providerName");
  69                                 connectionString = GetAttributeValue (addNode, "connectionString");
  70
  71                                 ConnectionStringSettings cs = new ConnectionStringSettings (name, connectionString, providerName);
  72                                 csList.Add (cs);
  73                         }
  74
  75                         return csSection;
  76
  77                 }
  78
  79                 internal string GetAttributeValue (XmlNode node, string name)
  80                 {
  81                         XmlAttribute attr = node.Attributes[name];
  82                         if (attr == null)
  83                                 throw new ConfigurationException ("Required Attribute '" + name +
  84                                                                   "' is  missing!", node);
  85                         string value = attr.Value;
  86                         if (value == "")
  87                                 throw new ConfigurationException ("Attribute '" + name + "' cannot be empty!",
  88                                                                   node);
  89                         return value;
  90                 }
  91
  92
  93                 #endregion // Methods
  94         }
  95 }
  96
  97 #endif // NET_2_0