mono/mcs/class/System.Data/System.Data.OleDb/OleDbDataAdapter.cs

//
// System.Data.OleDb.OleDbDataAdapter
//
// Authors:
//   Rodrigo Moya ([email protected])
//   Tim Coleman ([email protected])
//
// Copyright (C) Rodrigo Moya, 2002
// Copyright (C) Tim Coleman, 2002
//

using System;
using System.ComponentModel;
using System.Data;
using System.Data.Common;

namespace System.Data.OleDb
{
	public sealed class OleDbDataAdapter : DbDataAdapter, IDbDataAdapter
	{
		#region Fields

		OleDbCommand deleteCommand;
		OleDbCommand insertCommand;
		OleDbCommand selectCommand;
		OleDbCommand updateCommand;
		MissingMappingAction missingMappingAction;
		MissingSchemaAction missingSchemaAction;

		static readonly object EventRowUpdated = new object ();
		static readonly object EventRowUpdating = new object ();

		#endregion

		#region Constructors

		public OleDbDataAdapter ()
			: this (new OleDbCommand ())
		{
		}

		public OleDbDataAdapter (OleDbCommand selectCommand)
		{
			DeleteCommand = new OleDbCommand ();
			InsertCommand = new OleDbCommand ();
			SelectCommand = selectCommand;
			UpdateCommand = new OleDbCommand ();
		}

		public OleDbDataAdapter (string selectCommandText, OleDbConnection selectConnection)
			: this (new OleDbCommand (selectCommandText, selectConnection))
		{
		}

		public OleDbDataAdapter (string selectCommandText, string selectConnectionString)
			: this (selectCommandText, new OleDbConnection (selectConnectionString))
		{
		}

		#endregion // Fields

		#region Properties

		public OleDbCommand DeleteCommand {
			get { return deleteCommand; }
			set { deleteCommand = value; }
		}

		public OleDbCommand InsertCommand {
			get { return insertCommand; }
			set { insertCommand = value; }
		}

		public OleDbCommand SelectCommand {
			get { return selectCommand; }
			set { selectCommand = value; }
		}

		public OleDbCommand UpdateCommand {
			get { return updateCommand; }
			set { updateCommand = value; }
		}

		IDbCommand IDbDataAdapter.DeleteCommand {
			get { return DeleteCommand; }
			set { 
				if (!(value is OleDbCommand))
					throw new ArgumentException ();
				DeleteCommand = (OleDbCommand)value;
			}
		}

		IDbCommand IDbDataAdapter.InsertCommand {
			get { return InsertCommand; }
			set { 
				if (!(value is OleDbCommand))
					throw new ArgumentException ();
				InsertCommand = (OleDbCommand)value;
			}
		}

		IDbCommand IDbDataAdapter.SelectCommand {
			get { return SelectCommand; }
			set { 
				if (!(value is OleDbCommand))
					throw new ArgumentException ();
				SelectCommand = (OleDbCommand)value;
			}
		}

		MissingMappingAction IDataAdapter.MissingMappingAction {
			get { return missingMappingAction; }
			set { missingMappingAction = value; }
		}

		MissingSchemaAction IDataAdapter.MissingSchemaAction {
			get { return missingSchemaAction; }
			set { missingSchemaAction = value; }
		}
		
		IDbCommand IDbDataAdapter.UpdateCommand {
			get { return UpdateCommand; }
			set { 
				if (!(value is OleDbCommand))
					throw new ArgumentException ();
				UpdateCommand = (OleDbCommand)value;
			}
		}

		ITableMappingCollection IDataAdapter.TableMappings {
			get { return TableMappings; }
		}

		#endregion // Properties

		#region Methods

		protected override RowUpdatedEventArgs CreateRowUpdatedEvent (DataRow dataRow, IDbCommand command, StatementType statementType, DataTableMapping tableMapping)
		{
			return new OleDbRowUpdatedEventArgs (dataRow, command, statementType, tableMapping);
		}

		protected override RowUpdatingEventArgs CreateRowUpdatingEvent (DataRow dataRow, IDbCommand command, StatementType statementType, DataTableMapping tableMapping)
		{
			return new OleDbRowUpdatingEventArgs (dataRow, command, statementType, tableMapping);
		}

		protected override void OnRowUpdated (RowUpdatedEventArgs value)
		{
			OleDbRowUpdatedEventHandler handler = (OleDbRowUpdatedEventHandler) Events[EventRowUpdated];
			if ((handler != null) && (value is OleDbRowUpdatedEventArgs))
				handler (this, (OleDbRowUpdatedEventArgs) value);
		}

		protected override void OnRowUpdating (RowUpdatingEventArgs value)
		{
			OleDbRowUpdatingEventHandler handler = (OleDbRowUpdatingEventHandler) Events[EventRowUpdated];
			if ((handler != null) && (value is OleDbRowUpdatingEventArgs))
				handler (this, (OleDbRowUpdatingEventArgs) value);
		}

		#endregion // Methods

		#region Events and Delegates

		public event OleDbRowUpdatedEventHandler RowUpdated {
			add { Events.AddHandler (EventRowUpdated, value); }
			remove { Events.RemoveHandler (EventRowUpdated, value); }
		}

		public event OleDbRowUpdatedEventHandler RowUpdating {
			add { Events.AddHandler (EventRowUpdating, value); }
			remove { Events.RemoveHandler (EventRowUpdating, value); }
		}

		#endregion // Events and Delegates

	}
}