pack_rows::TableCollection Class Reference

A structure that contains a list of input tables for a hash join operation, BKA join operation or a streaming aggregation operation, and some pre-computed properties for the tables. More...

#include <pack_rows.h>

Public Member Functions
	TableCollection ()=default
	TableCollection (const Prealloced_array< TABLE *, 4 > &tables, bool store_rowids, table_map tables_to_get_rowid_for)
const Prealloced_array< Table, 4 > &	tables () const
table_map	tables_bitmap () const
size_t	ref_and_null_bytes_size () const
bool	has_blob_column () const
bool	store_rowids () const
table_map	tables_to_get_rowid_for () const
void	RequestRowId () const
	For each of the tables that we should get row IDs for, request that the row ID is filled in (the equivalent of calling handler::position()) if needed. More...
void	PrepareForRequestRowId () const
	For each of the tables that we should get row IDs for, inform the handler than row IDs will be needed. More...

Private Member Functions
void	AddTable (TABLE *tab)
void	RequestRowIdInner () const

Private Attributes
Prealloced_array< Table, 4 >	m_tables {PSI_NOT_INSTRUMENTED}
table_map	m_tables_bitmap = 0
size_t	m_ref_and_null_bytes_size = 0
bool	m_has_blob_column = false
bool	m_store_rowids = false
table_map	m_tables_to_get_rowid_for = 0

Detailed Description

A structure that contains a list of input tables for a hash join operation, BKA join operation or a streaming aggregation operation, and some pre-computed properties for the tables.

Constructor & Destructor Documentation

TableCollection() [1/2]

pack_rows::TableCollection::TableCollection ( )

default

TableCollection() [2/2]

pack_rows::TableCollection::TableCollection	(	const Prealloced_array< TABLE *, 4 > &	tables,
		bool	store_rowids,
		table_map	tables_to_get_rowid_for
	)

Member Function Documentation

AddTable()

void pack_rows::TableCollection::AddTable ( TABLE *  tab )

private

has_blob_column()

bool pack_rows::TableCollection::has_blob_column ( ) const

inline

PrepareForRequestRowId()

void pack_rows::TableCollection::PrepareForRequestRowId

(

)

const

For each of the tables that we should get row IDs for, inform the handler than row IDs will be needed.

ref_and_null_bytes_size()

size_t pack_rows::TableCollection::ref_and_null_bytes_size ( ) const

inline

RequestRowId()

void pack_rows::TableCollection::RequestRowId ( ) const

inline

For each of the tables that we should get row IDs for, request that the row ID is filled in (the equivalent of calling handler::position()) if needed.

Since this function is typically called once per row read, the check for the common case where no row IDs are required, is inlined to reduce the overhead.

RequestRowIdInner()

void pack_rows::TableCollection::RequestRowIdInner ( ) const

private

store_rowids()

bool pack_rows::TableCollection::store_rowids ( ) const

inline

tables()

const Prealloced_array< Table, 4 > & pack_rows::TableCollection::tables ( ) const

inline

tables_bitmap()

table_map pack_rows::TableCollection::tables_bitmap ( ) const

inline

tables_to_get_rowid_for()

table_map pack_rows::TableCollection::tables_to_get_rowid_for ( ) const

inline

Member Data Documentation

m_has_blob_column

bool pack_rows::TableCollection::m_has_blob_column = false

private

m_ref_and_null_bytes_size

size_t pack_rows::TableCollection::m_ref_and_null_bytes_size = 0

private

m_store_rowids

bool pack_rows::TableCollection::m_store_rowids = false

private

m_tables

Prealloced_array<Table, 4> pack_rows::TableCollection::m_tables {PSI_NOT_INSTRUMENTED}

private

m_tables_bitmap

table_map pack_rows::TableCollection::m_tables_bitmap = 0

private

m_tables_to_get_rowid_for

table_map pack_rows::TableCollection::m_tables_to_get_rowid_for = 0

private

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

• sql/pack_rows.h
• sql/pack_rows.cc