/// <summary>
    /// Executes the specified implementation.
    /// </summary>
    /// <param name="executionToken">The execution token.</param>
    /// <param name="implementation">The implementation.</param>
    /// <param name="state">The state.</param>
    /// <returns>The caller is expected to use the StreamingCommandCompletionToken to close any lingering connections and fire appropriate events.</returns>
    /// <exception cref="System.NotImplementedException"></exception>
    public override StreamingCommandCompletionToken ExecuteStream(CommandExecutionToken <OleDbCommand, OleDbParameter> executionToken, StreamingCommandImplementation <OleDbCommand> implementation, object?state)
    {
        if (executionToken == null)
        {
            throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
        }
        if (implementation == null)
        {
            throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
        }

        var startTime = DateTimeOffset.Now;

        OnExecutionStarted(executionToken, startTime, state);

        try
        {
            var cmd = new OleDbCommand();

            cmd.Connection  = m_Connection;
            cmd.Transaction = m_Transaction;
            executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

            implementation(cmd);

            return(new StreamingCommandCompletionToken(this, executionToken, startTime, state, cmd));
        }
        catch (Exception ex)
        {
            OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
            throw;
        }
    }
    /// <summary>
    /// Executes the specified operation.
    /// </summary>
    /// <param name="executionToken">The execution token.</param>
    /// <param name="implementation">The implementation that handles processing the result of the command.</param>
    /// <param name="state">User supplied state.</param>
    protected override int?Execute(CommandExecutionToken <OleDbCommand, OleDbParameter> executionToken, CommandImplementation <OleDbCommand> implementation, object?state)
    {
        if (executionToken == null)
        {
            throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
        }
        if (implementation == null)
        {
            throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
        }

        var startTime = DateTimeOffset.Now;

        OnExecutionStarted(executionToken, startTime, state);

        try
        {
            using (var cmd = new OleDbCommand())
            {
                cmd.Connection  = m_Connection;
                cmd.Transaction = m_Transaction;
                executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

                var rows = implementation(cmd);
                executionToken.RaiseCommandExecuted(cmd, rows);
                OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
                return(rows);
            }
        }
        catch (Exception ex)
        {
            OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
            throw;
        }
    }
Пример #3
0
        /// <summary>
        /// Executes the specified operation.
        /// </summary>
        /// <param name="executionToken">The execution token.</param>
        /// <param name="implementation">The implementation that handles processing the result of the command.</param>
        /// <param name="state">User supplied state.</param>
        /// <exception cref="ArgumentNullException">
        /// executionToken;executionToken is null.
        /// or
        /// implementation;implementation is null.
        /// </exception>
        protected override int?Execute(CommandExecutionToken <SQLiteCommand, SQLiteParameter> executionToken, CommandImplementation <SQLiteCommand> implementation, object?state)
        {
            if (executionToken == null)
            {
                throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
            }
            if (implementation == null)
            {
                throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
            }

            var mode = DisableLocks ? LockType.None : (executionToken as SQLiteCommandExecutionToken)?.LockType ?? LockType.Write;

            var startTime = DateTimeOffset.Now;

            OnExecutionStarted(executionToken, startTime, state);

            IDisposable?lockToken = null;

            try
            {
                switch (mode)
                {
                case LockType.Read: lockToken = SyncLock.ReaderLock(); break;

                case LockType.Write: lockToken = SyncLock.WriterLock(); break;
                }

                using (var cmd = new SQLiteCommand())
                {
                    cmd.Connection = m_Connection;
                    if (m_Transaction != null)
                    {
                        cmd.Transaction = m_Transaction;
                    }
                    executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

                    var rows = implementation(cmd);
                    executionToken.RaiseCommandExecuted(cmd, rows);
                    OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
                    return(rows);
                }
            }
            catch (Exception ex)
            {
                OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
                throw;
            }
            finally
            {
                if (lockToken != null)
                {
                    lockToken.Dispose();
                }
            }
        }
Пример #4
0
        /// <summary>
        /// Executes the operation asynchronously.
        /// </summary>
        /// <param name="executionToken">The execution token.</param>
        /// <param name="implementation">The implementation that handles processing the result of the command.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <param name="state">User supplied state.</param>
        /// <returns>Task.</returns>
        protected async override Task <int?> ExecuteAsync(CommandExecutionToken <NpgsqlCommand, NpgsqlParameter> executionToken, CommandImplementationAsync <NpgsqlCommand> implementation, CancellationToken cancellationToken, object?state)
        {
            if (executionToken == null)
            {
                throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
            }
            if (implementation == null)
            {
                throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
            }

            var startTime = DateTimeOffset.Now;

            OnExecutionStarted(executionToken, startTime, state);

            try
            {
                using (var cmd = new NpgsqlCommand())
                {
                    cmd.Connection = m_Connection;
                    if (m_Transaction != null)
                    {
                        cmd.Transaction = m_Transaction;
                    }
                    executionToken.PopulateCommand(cmd, DefaultCommandTimeout);
                    int?rows;
                    if (((PostgreSqlCommandExecutionToken)executionToken).DereferenceCursors)
                    {
                        rows = await DereferenceCursorsAsync(cmd, implementation).ConfigureAwait(false);
                    }
                    else
                    {
                        rows = await implementation(cmd).ConfigureAwait(false);
                    }

                    executionToken.RaiseCommandExecuted(cmd, rows);
                    OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
                    return(rows);
                }
            }
            catch (Exception ex)
            {
                if (cancellationToken.IsCancellationRequested)                 //convert Exception into a OperationCanceledException
                {
                    var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
                    OnExecutionCanceled(executionToken, startTime, DateTimeOffset.Now, state);
                    throw ex2;
                }
                else
                {
                    OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
                    throw;
                }
            }
        }
Пример #5
0
    /// <summary>
    /// Executes the specified implementation asynchronously.
    /// </summary>
    /// <param name="executionToken">The execution token.</param>
    /// <param name="implementation">The implementation.</param>
    /// <param name="cancellationToken">The cancellation token.</param>
    /// <param name="state">The state.</param>
    /// <returns>The caller is expected to use the StreamingCommandCompletionToken to close any lingering connections and fire appropriate events.</returns>
    /// <exception cref="System.NotImplementedException"></exception>
    public override async Task <StreamingCommandCompletionToken> ExecuteStreamAsync(CommandExecutionToken <SqlCommand, SqlParameter> executionToken, StreamingCommandImplementationAsync <SqlCommand> implementation, CancellationToken cancellationToken, object?state)
    {
        if (executionToken == null)
        {
            throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
        }
        if (implementation == null)
        {
            throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
        }

        var startTime = DateTimeOffset.Now;

        OnExecutionStarted(executionToken, startTime, state);

        SqlConnection?con = null;

        try
        {
            con = await CreateConnectionAsync(cancellationToken).ConfigureAwait(false);

            var cmd = new SqlCommand();

            cmd.Connection = con;
            executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

            await implementation(cmd).ConfigureAwait(false);

            return(new StreamingCommandCompletionToken(this, executionToken, startTime, state, cmd, con));
        }
        catch (Exception ex)
        {
#if NET6_0_OR_GREATER
            if (con != null)
            {
                await con.DisposeAsync().ConfigureAwait(false);
            }
#else
            con?.Dispose();
#endif

            if (cancellationToken.IsCancellationRequested)             //convert Exception into a OperationCanceledException
            {
                var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
                OnExecutionCanceled(executionToken, startTime, DateTimeOffset.Now, state);
                throw ex2;
            }
            else
            {
                OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
                throw;
            }
        }
    }
Пример #6
0
    /// <summary>
    /// Executes the specified implementation.
    /// </summary>
    /// <param name="executionToken">The execution token.</param>
    /// <param name="implementation">The implementation.</param>
    /// <param name="state">The state.</param>
    /// <returns>The caller is expected to use the StreamingCommandCompletionToken to close any lingering connections and fire appropriate events.</returns>
    public override StreamingCommandCompletionToken ExecuteStream(CommandExecutionToken <SQLiteCommand, SQLiteParameter> executionToken, StreamingCommandImplementation <SQLiteCommand> implementation, object?state)
    {
        if (executionToken == null)
        {
            throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
        }
        if (implementation == null)
        {
            throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
        }

        var mode = DisableLocks ? LockType.None : (executionToken as SQLiteCommandExecutionToken)?.LockType ?? LockType.Write;

        var startTime = DateTimeOffset.Now;

        OnExecutionStarted(executionToken, startTime, state);

        IDisposable?     lockToken = null;
        SQLiteConnection?con       = null;

        try
        {
            switch (mode)
            {
            case LockType.Read: lockToken = SyncLock.ReaderLock(); break;

            case LockType.Write: lockToken = SyncLock.WriterLock(); break;
            }

            con = CreateConnection();

            var cmd = new SQLiteCommand();

            cmd.Connection = con;
            executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

            implementation(cmd);

            return(new StreamingCommandCompletionToken(this, executionToken, startTime, state, cmd, con)
            {
                LockToken = lockToken
            });
        }
        catch (Exception ex)
        {
            lockToken?.Dispose();

            con?.Dispose();

            OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
            throw;
        }
    }
Пример #7
0
        /// <summary>
        /// Executes the specified implementation asynchronously.
        /// </summary>
        /// <param name="executionToken">The execution token.</param>
        /// <param name="implementation">The implementation.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <param name="state">The state.</param>
        /// <returns>The caller is expected to use the StreamingCommandCompletionToken to close any lingering connections and fire appropriate events.</returns>
        /// <exception cref="System.NotImplementedException"></exception>
        public override async Task <StreamingCommandCompletionToken> ExecuteStreamAsync(CommandExecutionToken <NpgsqlCommand, NpgsqlParameter> executionToken, StreamingCommandImplementationAsync <NpgsqlCommand> implementation, CancellationToken cancellationToken, object?state)
        {
            if (executionToken == null)
            {
                throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
            }
            if (implementation == null)
            {
                throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
            }

            var startTime = DateTimeOffset.Now;

            OnExecutionStarted(executionToken, startTime, state);

            try
            {
                var cmd = new NpgsqlCommand();

                cmd.Connection = m_Connection;
                if (m_Transaction != null)
                {
                    cmd.Transaction = m_Transaction;
                }
                executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

                if (((PostgreSqlCommandExecutionToken)executionToken).DereferenceCursors)
                {
                    await DereferenceCursorsAsync(cmd, implementation).ConfigureAwait(false);
                }
                else
                {
                    await implementation(cmd).ConfigureAwait(false);
                }

                return(new StreamingCommandCompletionToken(this, executionToken, startTime, state, cmd));
            }
            catch (Exception ex)
            {
                if (cancellationToken.IsCancellationRequested)                 //convert Exception into a OperationCanceledException
                {
                    var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
                    OnExecutionCanceled(executionToken, startTime, DateTimeOffset.Now, state);
                    throw ex2;
                }
                else
                {
                    OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
                    throw;
                }
            }
        }
Пример #8
0
        /// <summary>
        /// Executes the specified operation.
        /// </summary>
        /// <param name="executionToken">The execution token.</param>
        /// <param name="implementation">The implementation that handles processing the result of the command.</param>
        /// <param name="state">User supplied state.</param>
        protected override int?Execute(CommandExecutionToken <NpgsqlCommand, NpgsqlParameter> executionToken, CommandImplementation <NpgsqlCommand> implementation, object?state)
        {
            if (executionToken == null)
            {
                throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
            }
            if (implementation == null)
            {
                throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
            }

            var startTime = DateTimeOffset.Now;

            OnExecutionStarted(executionToken, startTime, state);

            try
            {
                using (var cmd = new NpgsqlCommand())
                {
                    cmd.Connection = m_Connection;
                    if (m_Transaction != null)
                    {
                        cmd.Transaction = m_Transaction;
                    }
                    executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

                    int?rows;

                    if (((PostgreSqlCommandExecutionToken)executionToken).DereferenceCursors)
                    {
                        rows = DereferenceCursors(cmd, implementation);
                    }
                    else
                    {
                        rows = implementation(cmd);
                    }

                    executionToken.RaiseCommandExecuted(cmd, rows);
                    OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
                    return(rows);
                }
            }
            catch (Exception ex)
            {
                OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
                throw;
            }
        }
Пример #9
0
    /// <summary>
    /// Executes the specified implementation.
    /// </summary>
    /// <param name="executionToken">The execution token.</param>
    /// <param name="implementation">The implementation.</param>
    /// <param name="state">The state.</param>
    /// <returns>The caller is expected to use the StreamingCommandCompletionToken to close any lingering connections and fire appropriate events.</returns>
    /// <exception cref="System.NotImplementedException"></exception>
    public override StreamingCommandCompletionToken ExecuteStream(CommandExecutionToken <NpgsqlCommand, NpgsqlParameter> executionToken, StreamingCommandImplementation <NpgsqlCommand> implementation, object?state)
    {
        if (executionToken == null)
        {
            throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
        }
        if (implementation == null)
        {
            throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
        }

        var startTime = DateTimeOffset.Now;

        OnExecutionStarted(executionToken, startTime, state);

        NpgsqlConnection?con = null;

        try
        {
            con = CreateConnection();

            var cmd = new NpgsqlCommand();
            NpgsqlTransaction?transactionToClose = null;

            cmd.Connection = con;
            executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

            if (((PostgreSqlCommandExecutionToken)executionToken).DereferenceCursors)
            {
                transactionToClose = DereferenceCursors(cmd, implementation);
            }
            else
            {
                implementation(cmd);
            }

            return(new StreamingCommandCompletionToken(this, executionToken, startTime, state, cmd, con)
            {
                Transaction = transactionToClose
            });
        }
        catch (Exception ex)
        {
            con?.Dispose();
            OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
            throw;
        }
    }
Пример #10
0
    /// <summary>
    /// Execute the operation asynchronously.
    /// </summary>
    /// <param name="executionToken">The execution token.</param>
    /// <param name="implementation">The implementation that handles processing the result of the command.</param>
    /// <param name="cancellationToken">The cancellation token.</param>
    /// <param name="state">User supplied state.</param>
    /// <returns>Task.</returns>
    protected override async Task <int?> ExecuteAsync(CommandExecutionToken <SqlCommand, SqlParameter> executionToken, CommandImplementationAsync <SqlCommand> implementation, CancellationToken cancellationToken, object?state)
    {
        if (executionToken == null)
        {
            throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
        }
        if (implementation == null)
        {
            throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
        }

        var startTime = DateTimeOffset.Now;

        OnExecutionStarted(executionToken, startTime, state);

        try
        {
            using (var con = await CreateConnectionAsync(cancellationToken).ConfigureAwait(false))
            {
                using (var cmd = new SqlCommand())
                {
                    cmd.Connection = con;
                    executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

                    var rows = await implementation(cmd).ConfigureAwait(false);

                    executionToken.RaiseCommandExecuted(cmd, rows);
                    OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
                    return(rows);
                }
            }
        }
        catch (Exception ex)
        {
            if (cancellationToken.IsCancellationRequested)             //convert Exception into a OperationCanceledException
            {
                var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
                OnExecutionCanceled(executionToken, startTime, DateTimeOffset.Now, state);
                throw ex2;
            }
            else
            {
                OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
                throw;
            }
        }
    }
Пример #11
0
    /// <summary>
    /// Executes the specified implementation.
    /// </summary>
    /// <param name="executionToken">The execution token.</param>
    /// <param name="implementation">The implementation.</param>
    /// <param name="state">The state.</param>
    /// <returns>The caller is expected to use the StreamingCommandCompletionToken to close any lingering connections and fire appropriate events.</returns>
    /// <exception cref="System.NotImplementedException"></exception>
    public override StreamingCommandCompletionToken ExecuteStream(CommandExecutionToken <MySqlCommand, MySqlParameter> executionToken, StreamingCommandImplementation <MySqlCommand> implementation, object?state)
    {
        if (executionToken == null)
        {
            throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
        }
        if (implementation == null)
        {
            throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
        }

        var startTime = DateTimeOffset.Now;

        OnExecutionStarted(executionToken, startTime, state);

        MySqlConnection?con = null;

        try
        {
            con = CreateConnection();

            var cmd = new MySqlCommand();

            cmd.Connection = con;
            executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

            implementation(cmd);

            return(new StreamingCommandCompletionToken(this, executionToken, startTime, state, cmd, con));
        }
        catch (Exception ex)
        {
            con?.Dispose();
            OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
            throw;
        }
    }
Пример #12
0
        /// <summary>
        /// Executes the operation asynchronously.
        /// </summary>
        /// <param name="executionToken">The execution token.</param>
        /// <param name="implementation">The implementation that handles processing the result of the command.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <param name="state">User supplied state.</param>
        /// <returns>Task.</returns>
        /// <exception cref="NotImplementedException"></exception>
        protected override async Task <int?> ExecuteAsync(CommandExecutionToken <SQLiteCommand, SQLiteParameter> executionToken, CommandImplementationAsync <SQLiteCommand> implementation, CancellationToken cancellationToken, object?state)
        {
            if (executionToken == null)
            {
                throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
            }
            if (implementation == null)
            {
                throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
            }

            var mode = DisableLocks ? LockType.None : (executionToken as SQLiteCommandExecutionToken)?.LockType ?? LockType.Write;

            var startTime = DateTimeOffset.Now;

            OnExecutionStarted(executionToken, startTime, state);

            IDisposable?lockToken = null;

            try
            {
                switch (mode)
                {
                case LockType.Read: lockToken = await SyncLock.ReaderLockAsync().ConfigureAwait(false); break;

                case LockType.Write: lockToken = await SyncLock.WriterLockAsync().ConfigureAwait(false); break;
                }

                using (var cmd = new SQLiteCommand())
                {
                    cmd.Connection = m_Connection;
                    if (m_Transaction != null)
                    {
                        cmd.Transaction = m_Transaction;
                    }
                    executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

                    var rows = await implementation(cmd).ConfigureAwait(false);

                    executionToken.RaiseCommandExecuted(cmd, rows);
                    OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
                    return(rows);
                }
            }
            catch (Exception ex)
            {
                if (cancellationToken.IsCancellationRequested)                 //convert SQLiteException into a OperationCanceledException
                {
                    var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
                    OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex2, state);
                    throw ex2;
                }
                else
                {
                    OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
                    throw;
                }
            }
            finally
            {
                if (lockToken != null)
                {
                    lockToken.Dispose();
                }
            }
        }
Пример #13
0
    /// <summary>
    /// Executes the specified implementation asynchronously.
    /// </summary>
    /// <param name="executionToken">The execution token.</param>
    /// <param name="implementation">The implementation.</param>
    /// <param name="cancellationToken">The cancellation token.</param>
    /// <param name="state">The state.</param>
    /// <returns>The caller is expected to use the StreamingCommandCompletionToken to close any lingering connections and fire appropriate events.</returns>
    public override async Task <StreamingCommandCompletionToken> ExecuteStreamAsync(CommandExecutionToken <SQLiteCommand, SQLiteParameter> executionToken, StreamingCommandImplementationAsync <SQLiteCommand> implementation, CancellationToken cancellationToken, object?state)
    {
        if (executionToken == null)
        {
            throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
        }
        if (implementation == null)
        {
            throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
        }

        var mode = DisableLocks ? LockType.None : (executionToken as SQLiteCommandExecutionToken)?.LockType ?? LockType.Write;

        var startTime = DateTimeOffset.Now;

        OnExecutionStarted(executionToken, startTime, state);

        IDisposable?     lockToken = null;
        SQLiteConnection?con       = null;

        try
        {
            switch (mode)
            {
            case LockType.Read: lockToken = await SyncLock.ReaderLockAsync().ConfigureAwait(false); break;

            case LockType.Write: lockToken = await SyncLock.WriterLockAsync().ConfigureAwait(false); break;
            }

            con = await CreateConnectionAsync(cancellationToken).ConfigureAwait(false);

            var cmd = new SQLiteCommand();

            cmd.Connection = con;
            executionToken.PopulateCommand(cmd, DefaultCommandTimeout);

            await implementation(cmd).ConfigureAwait(false);

            return(new StreamingCommandCompletionToken(this, executionToken, startTime, state, cmd, con)
            {
                LockToken = lockToken
            });
        }
        catch (Exception ex)
        {
            lockToken?.Dispose();

#if NET6_0_OR_GREATER
            if (con != null)
            {
                await con.DisposeAsync().ConfigureAwait(false);
            }
#else
            con?.Dispose();
#endif

            if (cancellationToken.IsCancellationRequested)             //convert SQLiteException into a OperationCanceledException
            {
                var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
                OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex2, state);
                throw ex2;
            }
            else
            {
                OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
                throw;
            }
        }
    }