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

   1 //
   2 // System.Data.Common.DbConnection
   3 //
   4 // Author:
   5 //   Tim Coleman (tim@timcoleman.com)
   6 //
   7 // Copyright (C) Tim Coleman, 2003
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 #if NET_2_0 || TARGET_JVM
  34
  35 using System.ComponentModel;
  36 using System.Data;
  37 using System.Transactions;
  38
  39 namespace System.Data.Common {
  40         public abstract class DbConnection : Component, IDbConnection, IDisposable
  41         {
  42                 #region Constructors
  43
  44                 protected DbConnection ()
  45                 {
  46                 }
  47
  48                 #endregion // Constructors
  49
  50                 #region Properties
  51
  52                 [RecommendedAsConfigurable (true)]
  53                 [RefreshProperties (RefreshProperties.All)]
  54                 [DefaultValue ("")]
  55                 public abstract string ConnectionString { get; set; }
  56
  57                 public abstract string Database { get; }
  58                 public abstract string DataSource { get; }
  59
  60                 [Browsable (false)]
  61                 public abstract string ServerVersion { get; }
  62
  63                 [Browsable (false)]
  64                 public abstract ConnectionState State { get; }
  65
  66                 public virtual int ConnectionTimeout {
  67                         get { return 15; }
  68                 }
  69
  70                 #endregion // Properties
  71
  72                 #region Methods
  73
  74                 protected abstract DbTransaction BeginDbTransaction (IsolationLevel isolationLevel);
  75
  76                 public DbTransaction BeginTransaction ()
  77                 {
  78                         return BeginDbTransaction (IsolationLevel.Unspecified);
  79                 }
  80
  81                 public DbTransaction BeginTransaction (IsolationLevel isolationLevel)
  82                 {
  83                         return BeginDbTransaction (isolationLevel);
  84                 }
  85
  86                 public abstract void ChangeDatabase (string databaseName);
  87                 public abstract void Close ();
  88
  89                 public DbCommand CreateCommand ()
  90                 {
  91                         return CreateDbCommand ();
  92                 }
  93
  94                 protected abstract DbCommand CreateDbCommand ();
  95
  96 #if NET_2_0
  97                 [MonoTODO]
  98                 public virtual void EnlistTransaction (Transaction transaction)
  99                 {
 100                         throw new NotSupportedException ();
 101                 }
 102 #endif
 103
 104                 [MonoTODO]
 105                 public virtual DataTable GetSchema ()
 106                 {
 107                         throw new NotSupportedException ();
 108                 }
 109
 110                 [MonoTODO]
 111                 public virtual DataTable GetSchema (string collectionName)
 112                 {
 113                         throw new NotSupportedException ();
 114                 }
 115
 116                 [MonoTODO]
 117                 public virtual DataTable GetSchema (string collectionName, string[] restrictionValues)
 118                 {
 119                         throw new NotSupportedException ();
 120                 }
 121
 122                 IDbTransaction IDbConnection.BeginTransaction ()
 123                 {
 124                         return BeginTransaction ();
 125                 }
 126
 127                 IDbTransaction IDbConnection.BeginTransaction (IsolationLevel il)
 128                 {
 129                         return BeginTransaction (il);
 130                 }
 131
 132                 IDbCommand IDbConnection.CreateCommand ()
 133                 {
 134                         return CreateCommand ();
 135                 }
 136
 137                 public abstract void Open ();
 138
 139                 protected virtual void OnStateChange (StateChangeEventArgs stateChanged)
 140                 {
 141                         if (StateChange != null)
 142                                 StateChange (this, stateChanged);
 143                 }
 144
 145                 #endregion // Methods
 146
 147                 public virtual event StateChangeEventHandler StateChange;
 148
 149         }
 150 }
 151
 152 #endif