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Feature: Writing Execute Results to Temp File (#35)

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* WIP for buffering in temporary file

* Adding support for writing to disk for buffering

* WIP - Adding file reader, factory for reader/writer

* Making long list use generics and implement IEnumerable

* Reading/Writing from file is working

* Removing unused 'skipValue' logic

* More tweaks to file buffer

Adding logic for cleaning up the temp files
Adding fix for empty/null column names

* Adding comments and cleanup

* Unit tests for FileStreamWrapper

* WIP adding more unit tests, and finishing up wiring up the output writers

* Finishing up initial unit tests

* Fixing bugs with long fields

* Squashed commit of the following:

commit df0ffc12a46cb286d801d08689964eac08ad71dd
Author: Benjamin Russell <beruss@microsoft.com>
Date:   Wed Sep 7 14:45:39 2016 -0700

    Removing last bit of async for file writing.

    We're seeing a 8x improvement of file write speeds!

commit 08a4b9f32e825512ca24d5dc03ef5acbf7cc6d94
Author: Benjamin Russell <beruss@microsoft.com>
Date:   Wed Sep 7 11:23:06 2016 -0700

    Removing async wrappers

* Rolling back test code for Program.cs

* Changes as per code review

* Fixing broken unit tests

* More fixes for codereview
This commit is contained in:
Benjamin Russell
2016-09-08 17:55:11 -07:00
committed by GitHub
parent 903eab61d1
commit 8aa3d524fc
24 changed files with 4050 additions and 195 deletions
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35
src/Microsoft.SqlTools.ServiceLayer/QueryExecution/DataStorage/IFileStreamReader.cs Normal file
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//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
using System;
using System.Collections.Generic;
using System.Data.SqlTypes;
using Microsoft.SqlTools.ServiceLayer.QueryExecution.Contracts;
namespace Microsoft.SqlTools.ServiceLayer.QueryExecution.DataStorage
{
/// <summary>
/// Interface for a object that reads from the filesystem
/// </summary>
public interface IFileStreamReader : IDisposable
{
object[] ReadRow(long offset, IEnumerable<DbColumnWrapper> columns);
FileStreamReadResult<short> ReadInt16(long i64Offset);
FileStreamReadResult<int> ReadInt32(long i64Offset);
FileStreamReadResult<long> ReadInt64(long i64Offset);
FileStreamReadResult<byte> ReadByte(long i64Offset);
FileStreamReadResult<char> ReadChar(long i64Offset);
FileStreamReadResult<bool> ReadBoolean(long i64Offset);
FileStreamReadResult<float> ReadSingle(long i64Offset);
FileStreamReadResult<double> ReadDouble(long i64Offset);
FileStreamReadResult<SqlDecimal> ReadSqlDecimal(long i64Offset);
FileStreamReadResult<decimal> ReadDecimal(long i64Offset);
FileStreamReadResult<DateTime> ReadDateTime(long i64Offset);
FileStreamReadResult<TimeSpan> ReadTimeSpan(long i64Offset);
FileStreamReadResult<string> ReadString(long i64Offset);
FileStreamReadResult<byte[]> ReadBytes(long i64Offset);
FileStreamReadResult<DateTimeOffset> ReadDateTimeOffset(long i64Offset);
}
}