#region Apache Notice
/*****************************************************************************
 * $Header: $
 * $Revision$
 * $Date$
 * 
 * iBATIS.NET Data Mapper
 * Copyright (C) 2004 - Gilles Bayon
 *  
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 ********************************************************************************/
#endregion

#region Imports
using System;
using System.Data;
#endregion


namespace IBatisNet.Common
{
	/// <summary>
	/// A template for a session in the iBATIS.NET framwork.
	/// Holds the connection, the transaction ...
	/// </summary>
	public interface IDalSession : IDisposable 
	{
		/// <summary>
		/// The data source use by the session.
		/// </summary>
		IDataSource DataSource
		{
			get;
		}

		/// <summary>
		/// The Connection use by the session.
		/// </summary>
		IDbConnection Connection
		{
			get; 
		}

		/// <summary>
		/// The Transaction use by the session.
		/// </summary>
		IDbTransaction Transaction
		{
			get;
		}

        /// <summary>
        /// Indicates if a transaction is open  on
        /// the session.
        /// </summary>
        bool IsTransactionStart
        {
            get;
        }

		/// <summary>
		/// Complete (commit) a transsaction
		/// </summary>
		void Complete();

		/// <summary>
		/// Open a connection.
		/// </summary>
		void OpenConnection();

		/// <summary>
		/// Open a connection, on the specified connection string.
		/// </summary>
		/// <param name="connectionString">The connection string</param>
		void OpenConnection(string connectionString);

		/// <summary>
		/// close a connection
		/// </summary>
		void CloseConnection();

		/// <summary>
		/// Open a connection and begin a transaction
		/// </summary>
		void BeginTransaction();

		/// <summary>
		/// Open a connection and begin a transaction on the specified connection string.
		/// </summary>
		/// <param name="connectionString">The connection string</param>
		void BeginTransaction(string connectionString);

		/// <summary>
		/// Begins a database transaction
		/// </summary>
		/// <param name="openConnection">Open a connection.</param>
		void BeginTransaction(bool openConnection);

		/// <summary>
		/// Open a connection and begin a transaction on the specified connection string.
		/// </summary>
		/// <param name="connectionString">The connection string</param>
		/// <param name="isolationLevel">The transaction isolation level for this connection.</param>
		void BeginTransaction(string connectionString, IsolationLevel isolationLevel);

		/// <summary>
		/// Open a connection and begin a transaction at the data source 
		/// with the specified IsolationLevel value.
		/// </summary>
		/// <param name="isolationLevel">The transaction isolation level for this connection.</param>
		void BeginTransaction(IsolationLevel isolationLevel);

		/// <summary>
		/// Begins a transaction on the current connection
		/// with the specified IsolationLevel value.
		/// </summary>
		/// <param name="isolationLevel">The transaction isolation level for this connection.</param>
		/// <param name="connectionString">The connection string</param>
		/// <param name="openConnection">Open a connection.</param>
		void BeginTransaction(string connectionString, bool openConnection, IsolationLevel isolationLevel);

		/// <summary>
		/// Begins a transaction on the current connection
		/// with the specified IsolationLevel value.
		/// </summary>
		/// <param name="isolationLevel">The transaction isolation level for this connection.</param>
		/// <param name="openConnection">Open a connection.</param>
		void BeginTransaction(bool openConnection, IsolationLevel isolationLevel);

		/// <summary>
		/// Commit a transaction and close the associated connection
		/// </summary>
		void CommitTransaction();

		/// <summary>
		/// Commits the database transaction.
		/// </summary>
		/// <param name="closeConnection">Close the connection</param>
		void CommitTransaction(bool closeConnection);

		/// <summary>
		/// Rollbak a transaction and close the associated connection
		/// </summary>
		void RollBackTransaction();

		/// <summary>
		/// Rolls back a transaction from a pending state.
		/// </summary>
		/// <param name="closeConnection">Close the connection</param>
		void RollBackTransaction(bool closeConnection);

		/// <summary>
		/// Create a command
		/// </summary>
		/// <param name="commandType">The type of the command</param>
		/// <returns>An IDbCommand.</returns>
		IDbCommand CreateCommand(CommandType commandType);

		/// <summary>
		/// Create an DataParameter
		/// </summary>
		/// <returns>An IDbDataParameter.</returns>
		IDbDataParameter CreateDataParameter();

		/// <summary>
		/// Create a DataAdapter
		/// </summary>
		/// <param name="command">The statement or stored procedure 
		/// used to select records in the data source.</param>
		/// <returns>An IDbDataAdapter.</returns>
		IDbDataAdapter CreateDataAdapter(IDbCommand command);

		/// <summary>
		/// Create a DataAdapter
		/// </summary>
		/// <returns>An IDbDataAdapter.</returns>
		IDbDataAdapter CreateDataAdapter();
	}
}