using System;
using System.Data;
using SDA.DataProvider.Core;

namespace SDA.DataProvider
{
    /// <summary>
    /// Adatbázis-ügylet
    /// </summary>
    public class SDATransaction : IDbTransaction
    {
        internal SDATransactionWrapper Transaction;

        internal SDATransaction(SDATransactionWrapper transaction)
        {
            Transaction = transaction;
        }

        bool _disposed;

        /// <summary>
        /// Explicit destruktor.
        /// </summary>
        /// <param name="disposing">Programozott felszabadítás?</param>
        protected virtual void Dispose(bool disposing)
        {
            if (_disposed)
            {
                return;
            }
            if (disposing)
            {
                if (Transaction != null)
                {
                    Transaction.Dispose();
                    Transaction = null;
                }
            }
            _disposed = true;
        }

        /// <summary>
        /// Eldobja az ügyletet.
        /// </summary>
        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        #region IDbTransaction Members

        /// <summary>
        /// Az ügylethez tartozó adatbázis-kapcsolat.
        /// </summary>
        public IDbConnection Connection
        {
            get
            {
                return Transaction.Connection;
            }
        }

        /// <summary>
        /// Az elválasztás szintje.
        /// </summary>
        public IsolationLevel IsolationLevel
        {
            get
            {
                return Transaction.IsolationLevel;
            }
        }

        /// <summary>
        /// Elköveti az ügyletet.
        /// </summary>
        public void Commit()
        {
            Transaction.Commit();
        }

        /// <summary>
        /// Visszagörgeti az ügyletet.
        /// </summary>
        public void Rollback()
        {
            Transaction.Rollback();
        }

        #endregion
    }
}