Compressed_ostream Class Reference

#include <basic_ostream.h>

Inheritance diagram for Compressed_ostream:

Public Member Functions
	Compressed_ostream (Compressor_ptr_t compressor, Managed_buffer_sequence_t &managed_buffer_sequence)
	~Compressed_ostream () override=default
	Compressed_ostream ()=delete
	Compressed_ostream (const Compressed_ostream &)=delete
Compressed_ostream &	operator= (const Compressed_ostream &)=delete
bool	write (const unsigned char *buffer, my_off_t length) override
	Compress the given bytes into the buffer sequence. More...
Status_t	get_status () const
Public Member Functions inherited from Basic_ostream
virtual	~Basic_ostream ()=default

Private Types
using	Compressor_t = binary_log::transaction::compression::Compressor
using	Compressor_ptr_t = std::shared_ptr< Compressor_t >
using	Status_t = binary_log::transaction::compression::Compress_status
using	Managed_buffer_sequence_t = Compressor_t::Managed_buffer_sequence_t

Private Attributes
Compressor_ptr_t	m_compressor
Managed_buffer_sequence_t &	m_managed_buffer_sequence
Status_t	m_status = Status_t::success

Member Typedef Documentation

Compressor_ptr_t

using Compressed_ostream::Compressor_ptr_t = std::shared_ptr<Compressor_t>

private

Compressor_t

using Compressed_ostream::Compressor_t = binary_log::transaction::compression::Compressor

private

Managed_buffer_sequence_t

using Compressed_ostream::Managed_buffer_sequence_t = Compressor_t::Managed_buffer_sequence_t

private

Status_t

using Compressed_ostream::Status_t = binary_log::transaction::compression::Compress_status

private

Constructor & Destructor Documentation

Compressed_ostream() [1/3]

Compressed_ostream::Compressed_ostream ( Compressor_ptr_t  compressor, Managed_buffer_sequence_t &  managed_buffer_sequence  )

inline

~Compressed_ostream()

Compressed_ostream::~Compressed_ostream ( )

overridedefault

Compressed_ostream() [2/3]

Compressed_ostream::Compressed_ostream ( )

delete

Compressed_ostream() [3/3]

Compressed_ostream::Compressed_ostream ( const Compressed_ostream &  )

delete

Member Function Documentation

get_status()

Compressed_ostream::Status_t Compressed_ostream::get_status

(

)

const

operator=()

Compressed_ostream & Compressed_ostream::operator= ( const Compressed_ostream &  )

delete

write()

bool Compressed_ostream::write ( const unsigned char *  buffer, my_off_t  length  )

overridevirtual

Compress the given bytes into the buffer sequence.

Note

This will consume the input, but may not produce all output; it keeps the compression frame open so that the compressor can make use of patterns across different invocations of the function. The caller has to call Compressor::finish to end the frame.

Parameters

buffer	The input buffer
length	The size of the input buffer

Return values

false	Success
true	Error

Implements Basic_ostream.

Member Data Documentation

m_compressor

Compressor_ptr_t Compressed_ostream::m_compressor

private

m_managed_buffer_sequence

Managed_buffer_sequence_t& Compressed_ostream::m_managed_buffer_sequence

private

m_status

Status_t Compressed_ostream::m_status = Status_t::success

private

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The documentation for this class was generated from the following files:

• sql/basic_ostream.h
• sql/basic_ostream.cc