dev-npgsql/npgsql: Npgsql is the .NET data provider for PostgreSQL.

src/Npgsql/BackendMessages/DataRowMessage.cs

50 строк2 KB

Shay Rojansky

Recycle NpgsqlDataReader instances

14 мар 2018, 21:10

14 мар 2018, 21:101768aa7

#region License
// The PostgreSQL License
//
// Copyright (C) 2018 The Npgsql Development Team
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph and the following two paragraphs appear in all copies.
//
// IN NO EVENT SHALL THE NPGSQL DEVELOPMENT TEAM BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
// INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
// DOCUMENTATION, EVEN IF THE NPGSQL DEVELOPMENT TEAM HAS BEEN ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//
// THE NPGSQL DEVELOPMENT TEAM SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
// ON AN "AS IS" BASIS, AND THE NPGSQL DEVELOPMENT TEAM HAS NO OBLIGATIONS
// TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
#endregion

using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using JetBrains.Annotations;

namespace Npgsql.BackendMessages
{
    /// <summary>
    /// DataRow is special in that it does not parse the actual contents of the backend message,
    /// because in sequential mode the message will be traversed and processed sequentially by
    /// <see cref="NpgsqlSequentialDataReader"/>.
    /// </summary>
    class DataRowMessage : IBackendMessage
    {
        public BackendMessageCode Code => BackendMessageCode.DataRow;

        internal int Length { get; private set; }

        internal DataRowMessage Load(int len)
        {
            Length = len;
            return this;
        }
    }
}