beagled/Mono.Data.SqliteClient/SqliteDataAdapter.cs

   1 //
   2 // Mono.Data.SqliteClient.SqliteDataAdapter.cs
   3 //
   4 // Represents a set of data commands and a database connection that are used
   5 // to fill the DataSet and update the data source.
   6 //
   7 // Author(s): Everaldo Canuto  <everaldo_canuto@yahoo.com.br>
   8 //
   9 // Copyright (C) 2004  Everaldo Canuto
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // 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 BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.Data;
  33 using System.Data.Common;
  34 using System.Collections;
  35 using System.Text;
  36
  37 namespace Mono.Data.SqliteClient
  38 {
  39         /// <summary>
  40         /// Represents a set of data commands and a database connection that are used
  41         /// to fill the <see cref="DataSet">DataSet</see> and update the data source.
  42         /// </summary>
  43         public class SqliteDataAdapter : DbDataAdapter, IDbDataAdapter
  44         {
  45                 #region Fields
  46
  47                 private IDbCommand _deleteCommand;
  48                 private IDbCommand _insertCommand;
  49                 private IDbCommand _selectCommand;
  50                 private IDbCommand _updateCommand;
  51
  52                 #endregion
  53
  54                 #region Public Events
  55
  56                 /// <summary>
  57                 /// Occurs during <see cref="DbDataAdapter.Update">Update</see> after a
  58                 /// command is executed against the data source. The attempt to update
  59                 /// is made, so the event fires.
  60                 /// </summary>
  61                 public event SqliteRowUpdatedEventHandler RowUpdated;
  62
  63                 /// <summary>
  64                 /// Occurs during <see cref="DbDataAdapter.Update">Update</see> before a
  65                 /// command is executed against the data source. The attempt to update
  66                 /// is made, so the event fires.
  67                 /// </summary>
  68                 public event SqliteRowUpdatingEventHandler RowUpdating;
  69
  70                 #endregion
  71
  72                 #region Contructors
  73
  74                 /// <summary>
  75                 /// Initializes a new instance of the <see cref="SqliteDataAdapter">SqliteDataAdapter</see> class.
  76                 /// </summary>
  77                 public SqliteDataAdapter()
  78                 {
  79                 }
  80
  81                 /// <summary>
  82                 /// Initializes a new instance of the <see cref="SqliteDataAdapter">SqliteDataAdapter</see> class
  83                 /// with the specified SqliteCommand as the SelectCommand property.
  84                 /// </summary>
  85                 /// <param name="selectCommand"></param>
  86                 public SqliteDataAdapter(IDbCommand selectCommand)
  87                 {
  88                         SelectCommand = selectCommand;
  89                 }
  90
  91                 /// <summary>
  92                 /// Initializes a new instance of the <see cref="SqliteDataAdapter">SqliteDataAdapter</see> class
  93                 /// with a SelectCommand and a SqliteConnection object.
  94                 /// </summary>
  95                 /// <param name="selectCommandText"></param>
  96                 /// <param name="connection"></param>
  97                 public SqliteDataAdapter(string selectCommandText, SqliteConnection connection)
  98                 {
  99                         IDbCommand cmd = connection.CreateCommand();
 100                         cmd.CommandText = selectCommandText;
 101                         SelectCommand = cmd;
 102                 }
 103
 104                 /// <summary>
 105                 /// Initializes a new instance of the <see cref="SqliteDataAdapter">SqliteDataAdapter</see> class
 106                 /// with a SelectCommand and a connection string.
 107                 /// </summary>
 108                 /// <param name="selectCommandText"></param>
 109                 /// <param name="connectionString"></param>
 110                 public SqliteDataAdapter(string selectCommandText, string connectionString) : this(selectCommandText ,new SqliteConnection(connectionString))
 111                 {
 112                 }
 113
 114                 #endregion
 115
 116                 #region Public Properties
 117
 118                 /// <summary>
 119                 /// Gets or sets a Transact-SQL statement or stored procedure to delete
 120                 /// records from the data set.
 121                 /// </summary>
 122                 public IDbCommand DeleteCommand {
 123                         get { return _deleteCommand; }
 124                         set { _deleteCommand = value; }
 125                 }
 126
 127                 /// <summary>
 128                 /// Gets or sets a Transact-SQL statement or stored procedure to insert
 129                 /// new records into the data source.
 130                 /// </summary>
 131                 public IDbCommand InsertCommand {
 132                         get { return _insertCommand; }
 133                         set { _insertCommand = value; }
 134                 }
 135
 136                 /// <summary>
 137                 /// Gets or sets a Transact-SQL statement or stored procedure used to
 138                 /// select records in the data source.
 139                 /// </summary>
 140                 public IDbCommand SelectCommand {
 141                         get { return _selectCommand; }
 142                         set { _selectCommand = value; }
 143                 }
 144
 145                 /// <summary>
 146                 /// Gets or sets a Transact-SQL statement or stored procedure used to
 147                 /// update records in the data source.
 148                 /// </summary>
 149                 public IDbCommand UpdateCommand {
 150                         get { return _updateCommand; }
 151                         set { _updateCommand = value; }
 152                 }
 153
 154                 #endregion
 155
 156                 #region Protected Methods
 157
 158                 /// <summary>
 159                 /// Initializes a new instance of the <see cref="RowUpdatedEventArgs">RowUpdatedEventArgs</see> class.
 160                 /// </summary>
 161                 /// <param name="dataRow">The DataRow used to update the data source.</param>
 162                 /// <param name="command">The IDbCommand executed during the Update.</param>
 163                 /// <param name="statementType">Whether the command is an UPDATE, INSERT, DELETE, or SELECT statement.</param>
 164                 /// <param name="tableMapping">A DataTableMapping object.</param>
 165                 /// <returns></returns>
 166                 protected override RowUpdatedEventArgs CreateRowUpdatedEvent(DataRow dataRow, IDbCommand command, StatementType statementType, DataTableMapping tableMapping)
 167                 {
 168                         return new SqliteRowUpdatedEventArgs (dataRow, command, statementType, tableMapping);
 169                 }
 170
 171                 /// <summary>
 172                 ///
 173                 /// </summary>
 174                 /// <param name="dataRow">The DataRow used to update the data source.</param>
 175                 /// <param name="command">The IDbCommand executed during the Update.</param>
 176                 /// <param name="statementType">Whether the command is an UPDATE, INSERT, DELETE, or SELECT statement.</param>
 177                 /// <param name="tableMapping">A DataTableMapping object.</param>
 178                 /// <returns></returns>
 179                 protected override RowUpdatingEventArgs CreateRowUpdatingEvent(DataRow dataRow, IDbCommand command, StatementType statementType, DataTableMapping tableMapping)
 180                 {
 181                         return new SqliteRowUpdatingEventArgs(dataRow, command, statementType, tableMapping);
 182                 }
 183
 184                 /// <summary>
 185                 /// Raises the RowUpdated event of a Sqlite data provider.
 186                 /// </summary>
 187                 /// <param name="args">A RowUpdatedEventArgs that contains the event data.</param>
 188                 protected override void OnRowUpdating (RowUpdatingEventArgs args)
 189                 {
 190                         if (RowUpdating != null)
 191                                 RowUpdating(this, args);
 192                 }
 193
 194                 /// <summary>
 195                 /// Raises the RowUpdating event of Sqlite data provider.
 196                 /// </summary>
 197                 /// <param name="args">An RowUpdatingEventArgs that contains the event data.</param>
 198                 protected override void OnRowUpdated (RowUpdatedEventArgs args)
 199                 {
 200                         if (RowUpdated != null)
 201                                 RowUpdated(this, args);
 202                 }
 203
 204                 #endregion
 205         }
 206 }