Class NpgsqlRawCopyStream

Namespace

Npgsql

Assembly

Npgsql.dll

Provides an API for a raw binary COPY operation, a high-performance data import/export mechanism to a PostgreSQL table. Initiated by BeginRawBinaryCopy(string)

public sealed class NpgsqlRawCopyStream : Stream, IDisposable, IAsyncDisposable

Inheritance

object

MarshalByRefObject

Stream

NpgsqlRawCopyStream

Implements

IDisposable

IAsyncDisposable

Inherited Members

Stream.Null

Stream.CopyTo(Stream)

Stream.CopyTo(Stream, int)

Stream.CopyToAsync(Stream)

Stream.CopyToAsync(Stream, int)

Stream.CopyToAsync(Stream, CancellationToken)

Stream.CopyToAsync(Stream, int, CancellationToken)

Stream.Dispose()

Stream.Close()

Stream.FlushAsync()

Stream.BeginRead(byte[], int, int, AsyncCallback, object)

Stream.EndRead(IAsyncResult)

Stream.ReadAsync(byte[], int, int)

Stream.ReadExactlyAsync(Memory<byte>, CancellationToken)

Stream.ReadExactlyAsync(byte[], int, int, CancellationToken)

Stream.ReadAtLeastAsync(Memory<byte>, int, bool, CancellationToken)

Stream.BeginWrite(byte[], int, int, AsyncCallback, object)

Stream.EndWrite(IAsyncResult)

Stream.WriteAsync(byte[], int, int)

Stream.ReadByte()

Stream.ReadExactly(Span<byte>)

Stream.ReadExactly(byte[], int, int)

Stream.ReadAtLeast(Span<byte>, int, bool)

Stream.WriteByte(byte)

Stream.Synchronized(Stream)

MarshalByRefObject.GetLifetimeService()

MarshalByRefObject.InitializeLifetimeService()

object.GetType()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Remarks

See https://www.postgresql.org/docs/current/static/sql-copy.html.

Properties

CanRead

public override bool CanRead { get; }

Property Value

bool

CanSeek

public override bool CanSeek { get; }

Property Value

bool

CanTimeout

public override bool CanTimeout { get; }

Property Value

bool

CanWrite

public override bool CanWrite { get; }

Property Value

bool

Length

public override long Length { get; }

Property Value

long

Position

public override long Position { get; set; }

Property Value

long

ReadTimeout

public override int ReadTimeout { get; set; }

Property Value

int

WriteTimeout

public override int WriteTimeout { get; set; }

Property Value

int

Methods

Cancel()

Cancels and terminates an ongoing operation. Any data already written will be discarded.

public void Cancel()

CancelAsync()

Cancels and terminates an ongoing operation. Any data already written will be discarded.

public Task CancelAsync()

Returns

Task

Dispose(bool)

protected override void Dispose(bool disposing)

Parameters

disposing bool

DisposeAsync()

public override ValueTask DisposeAsync()

Returns

ValueTask

Flush()

public override void Flush()

FlushAsync(CancellationToken)

public override Task FlushAsync(CancellationToken cancellationToken)

Parameters

cancellationToken CancellationToken

Returns

Task

Read(byte[], int, int)

public override int Read(byte[] buffer, int offset, int count)

Parameters

buffer byte[]

offset int

count int

Returns

int

Read(Span<byte>)

public override int Read(Span<byte> span)

Parameters

span Span<byte>

Returns

int

ReadAsync(byte[], int, int, CancellationToken)

public override Task<int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)

Parameters

buffer byte[]

offset int

count int

cancellationToken CancellationToken

Returns

Task<int>

ReadAsync(Memory<byte>, CancellationToken)

public override ValueTask<int> ReadAsync(Memory<byte> buffer, CancellationToken cancellationToken)

Parameters

buffer Memory<byte>

cancellationToken CancellationToken

Returns

ValueTask<int>

Seek(long, SeekOrigin)

public override long Seek(long offset, SeekOrigin origin)

Parameters

offset long

origin SeekOrigin

Returns

long

SetLength(long)

public override void SetLength(long value)

Parameters

value long

Write(byte[], int, int)

public override void Write(byte[] buffer, int offset, int count)

Parameters

buffer byte[]

offset int

count int

Write(ReadOnlySpan<byte>)

public override void Write(ReadOnlySpan<byte> buffer)

Parameters

buffer ReadOnlySpan<byte>

WriteAsync(byte[], int, int, CancellationToken)

public override Task WriteAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)

Parameters

buffer byte[]

offset int

count int

cancellationToken CancellationToken

Returns

Task

WriteAsync(ReadOnlyMemory<byte>, CancellationToken)

public override ValueTask WriteAsync(ReadOnlyMemory<byte> buffer, CancellationToken cancellationToken = default)

Parameters

buffer ReadOnlyMemory<byte>

cancellationToken CancellationToken

Returns

ValueTask