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

   1 // ConnectionManager.cs - Singleton ConnectionManager class to manage
   2 // database connections for test cases.
   3 //
   4 // Authors:
   5 //      Sureshkumar T (tsureshkumar@novell.com)
   6 //
   7 // Copyright Novell Inc., and the individuals listed on the
   8 // ChangeLog entries.
   9 //
  10 //
  11 // Permission is hereby granted, free of charge, to any person
  12 // obtaining a copy of this software and associated documentation
  13 // files (the "Software"), to deal in the Software without
  14 // restriction, including without limitation the rights to use, copy,
  15 // modify, merge, publish, distribute, sublicense, and/or sell copies
  16 // of the Software, and to permit persons to whom the Software is
  17 // furnished to do so, subject to the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  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
  26 // BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  27 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  28 // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  29 // SOFTWARE.
  30
  31 using System;
  32 using System.Configuration;
  33 using System.Data;
  34 using Mono.Data;
  35
  36 namespace MonoTests.System.Data
  37 {
  38         public class ConnectionManager
  39         {
  40                 private static ConnectionManager Instance;
  41                 private IDbConnection _connection;
  42                 private string _connectionString;
  43
  44                 static ConnectionManager ()
  45                 {
  46                         Instance = new ConnectionManager ();
  47                 }
  48
  49                 private ConnectionManager ()
  50                 {
  51                         string connectionString = ConfigurationSettings.AppSettings ["ConnString"];
  52                         if (connectionString == null || connectionString.Equals (String.Empty)) {
  53                                 throw new ArgumentException ("Connection string is invalid!");
  54                         }
  55                         _connection = ProviderFactory.CreateConnectionFromConfig ("ConnString");
  56                         _connectionString = Connection.ConnectionString;
  57                 }
  58
  59                 public static ConnectionManager Singleton
  60                 {
  61                         get {return Instance;}
  62                 }
  63
  64                 public IDbConnection Connection
  65                 {
  66                         get {return _connection;}
  67                 }
  68
  69                 public string ConnectionString
  70                 {
  71                         get {return _connectionString;}
  72                 }
  73
  74                 public void OpenConnection ()
  75                 {
  76                         if (_connection == null)
  77                                 _connection = ProviderFactory.CreateConnectionFromConfig ("ConnString");
  78                         if (!(_connection.State == ConnectionState.Closed || _connection.State == ConnectionState.Broken))
  79                                 _connection.Close ();
  80                         _connection.ConnectionString = _connectionString;
  81                         _connection.Open ();
  82                 }
  83
  84                 public void CloseConnection ()
  85                 {
  86                         if (_connection != null && _connection.State != ConnectionState.Closed)
  87                                 _connection.Close ();
  88                 }
  89
  90         }
  91 }