mcs/class/Mono.Data/ProviderSectionHandler.cs

   1 //
   2 // Mono.Data.ProviderSectionHandler
   3 //
   4 // Authors:
   5 //   Brian Ritchie (brianlritchie@hotmail.com)
   6 //
   7 //
   8 // Copyright (C) Brian Ritchie, 2002
   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;
  33 using System.Xml;
  34 using System.Configuration;
  35
  36 namespace Mono.Data
  37 {
  38         public class ProviderSectionHandler : IConfigurationSectionHandler
  39         {
  40                 public virtual object Create(object parent,object configContext,XmlNode section)
  41                 {
  42                         ProviderCollection providers=new ProviderCollection();
  43
  44                         XmlNodeList ProviderList = section.SelectNodes ("./provider");
  45
  46                         foreach (XmlNode ProviderNode in ProviderList) {
  47                                 Provider provider=new Provider(
  48                                         GetStringValue(ProviderNode,"name",true),
  49                                         GetStringValue(ProviderNode,"connection",true),
  50                                         GetStringValue(ProviderNode,"adapter",true),
  51                                         GetStringValue(ProviderNode,"command",true),
  52                                         GetStringValue(ProviderNode,"assembly",true),
  53                                         GetStringValue(ProviderNode,"description",false));
  54                                 providers.Add(provider);
  55                         }
  56                         return providers;
  57                 }
  58
  59                 private string GetStringValue(XmlNode _node, string _attribute, bool required)
  60                 {
  61                         XmlNode a = _node.Attributes.RemoveNamedItem(_attribute);
  62                         if (a == null) {
  63                                 if (required)
  64                                         throw new ConfigurationException("Attribute required: " + _attribute);
  65                                 else
  66                                         return null;
  67                         }
  68                         return a.Value;
  69                 }
  70         }
  71 }
  72