mcs/class/System.Data/Test/ProviderTests/Common/EngineConfig.cs

   1 //
   2 // EngineConfig.cs  - Holds information on the capabilities and behavior of an
   3 // RDBMS engine.
   4 //
   5 // Author:
   6 //      Gert Driesen (drieseng@users.sourceforge.net
   7 //
   8 // Copyright (c) 2008 Gert Driesen
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System;
  31 using System.Configuration;
  32 using System.Globalization;
  33 using System.Xml;
  34
  35 namespace MonoTests.System.Data
  36 {
  37         internal sealed class EngineConfig
  38         {
  39                 private string name;
  40                 private string quoteCharacter;
  41                 private bool removesTrailingSpaces;
  42                 private bool emptyBinaryAsNull;
  43                 private bool supportsMicroseconds;
  44                 private bool supportsUniqueIdentifier;
  45                 private bool supportsDate;
  46                 private bool supportsTime;
  47                 private bool supportsTimestamp;
  48                 private EngineType type;
  49                 private int clientVersion;
  50
  51                 private EngineConfig ()
  52                 {
  53                 }
  54
  55                 public string Name {
  56                         get { return name; }
  57                 }
  58
  59                 /// <summary>
  60                 /// Returns the character(s) for quoting identifiers.
  61                 /// </summary>
  62                 public string QuoteCharacter {
  63                         get { return quoteCharacter; }
  64                 }
  65
  66                 public EngineType Type {
  67                         get { return type; }
  68                 }
  69
  70                 public bool RemovesTrailingSpaces {
  71                         get { return removesTrailingSpaces; }
  72                 }
  73
  74                 public bool EmptyBinaryAsNull {
  75                         get { return emptyBinaryAsNull; }
  76                 }
  77
  78                 public bool SupportsMicroseconds {
  79                         get { return supportsMicroseconds; }
  80                 }
  81
  82                 public bool SupportsUniqueIdentifier {
  83                         get { return supportsUniqueIdentifier; }
  84                 }
  85
  86                 public bool SupportsDate {
  87                         get { return supportsDate; }
  88                 }
  89
  90                 public bool SupportsTime {
  91                         get { return supportsTime; }
  92                 }
  93
  94                 public bool SupportsTimestamp {
  95                         get { return supportsTimestamp; }
  96                 }
  97
  98                 public int ClientVersion {
  99                        get { return clientVersion; }
 100                 }
 101
 102                 public static EngineConfig FromXml (XmlNode config)
 103                 {
 104                         EngineConfig engine = new EngineConfig ();
 105                         engine.name = GetAttribValue (config, "name", true);
 106                         engine.quoteCharacter = GetAttribValue (config, "quoteCharacter", true);
 107                         engine.removesTrailingSpaces = ParseBoolean (config, "removesTrailingSpaces", false, true);
 108                         engine.emptyBinaryAsNull = ParseBoolean (config, "emptyBinaryAsNull", false, true);
 109                         engine.supportsMicroseconds = ParseBoolean (config, "supportsMicroseconds", false, true);
 110                         engine.supportsUniqueIdentifier = ParseBoolean (config, "supportsUniqueIdentifier", false, true);
 111                         engine.supportsDate = ParseBoolean (config, "supportsDate", false, true);
 112                         engine.supportsTime = ParseBoolean (config, "supportsTime", false, true);
 113                         engine.supportsTimestamp = ParseBoolean (config, "supportsTimestamp", false, true);
 114                         engine.type = ParseEngineType (config, "type");
 115                         engine.clientVersion = ParseClientVersion (config, "clientversion");
 116                         return engine;
 117                 }
 118
 119                 static string GetAttribValue (XmlNode node, string name, bool required)
 120                 {
 121                         XmlAttribute attr = node.Attributes [name];
 122                         if (attr == null) {
 123                                 if (required)
 124                                         throw CreateAttributeMissingException (name, node);
 125                                 return null;
 126                         }
 127                         return attr.Value;
 128                 }
 129
 130                 static bool ParseBoolean (XmlNode config, string attrName, bool required, bool defaultValue)
 131                 {
 132                         XmlAttribute attr = config.Attributes [attrName];
 133                         if (attr == null) {
 134                                 if (required)
 135                                         throw CreateAttributeMissingException (attrName, config);
 136                                 return defaultValue;
 137                         }
 138
 139                         string value = attr.Value;
 140
 141                         try {
 142                                 return bool.Parse (value);
 143                         } catch (Exception ex) {
 144                                 throw CreateInvalidValueException (attrName,
 145                                         value, attr, ex);
 146                         }
 147                 }
 148
 149                 static EngineType ParseEngineType (XmlNode config, string attrName)
 150                 {
 151                         XmlAttribute attr = config.Attributes [attrName];
 152                         if (attr == null)
 153                                 throw CreateAttributeMissingException (attrName, config);
 154
 155                         string value = attr.Value;
 156
 157                         try {
 158                                 return (EngineType) Enum.Parse (typeof (EngineType), value);
 159                         } catch (Exception ex) {
 160                                 throw CreateInvalidValueException (attrName,
 161                                         value, attr, ex);
 162                         }
 163                 }
 164
 165                 static int ParseClientVersion (XmlNode config, string attrName)
 166                 {
 167                         XmlAttribute attr = config.Attributes [attrName];
 168                         if (attr == null)
 169                                 return -1;
 170
 171                         string value = attr.Value;
 172
 173                         try {
 174                                 return Int32.Parse (value);
 175                         } catch (Exception ex) {
 176                                 throw CreateInvalidValueException (attrName,
 177                                         value, attr, ex);
 178                         }
 179                 }
 180
 181                 static Exception CreateInvalidValueException (string name, string value, XmlNode node, Exception cause)
 182                 {
 183                         string msg = string.Format (CultureInfo.InvariantCulture,
 184                                         "Invalid value '{0}' for attribute {1}.",
 185                                         value, name);
 186                         throw new ConfigurationErrorsException (msg, cause, node);
 187                 }
 188
 189                 static Exception CreateAttributeMissingException (string name, XmlNode node)
 190                 {
 191                         string msg = string.Format (CultureInfo.InvariantCulture,
 192                                 "Missing '{0}' attribute.", name);
 193                         throw new ConfigurationErrorsException (msg, node);
 194                 }
 195         }
 196 }