ddl::Dup Struct Reference

Structure for reporting duplicate records. More...

#include <ddl0ddl.h>

Public Member Functions
	Dup ()=default
	Dup (dict_index_t *index, TABLE *table, const ulint *col_map, size_t n_dup)
	Constructor. More...
void	report (const dfield_t *entry) noexcept
	Report a duplicate key. More...
void	report () noexcept
	Report a duplicate key, saved in m_entry member. More...
void	report (const mrec_t *entry, const ulint *offsets) noexcept
	Report a duplicate key. More...
bool	empty () const noexcept
void	save_duplicate (const dfield_t *entry)
	Save the duplicate tuple information. More...

Public Attributes
dict_index_t *	m_index {}
	Index being sorted. More...
TABLE *	m_table {}
	MySQL table object. More...
const ulint *	m_col_map {}
	Mapping of column numbers in table to the rebuilt table (index->table), or NULL if not rebuilding table. More...
size_t	m_n_dup {}
	Number of duplicates. More...

Private Attributes
const dfield_t *	m_entry {nullptr}
	The duplicate tuple of index m_index. More...

Detailed Description

Structure for reporting duplicate records.

Constructor & Destructor Documentation

Dup() [1/2]

ddl::Dup::Dup ( )

default

Dup() [2/2]

ddl::Dup::Dup ( dict_index_t *  index, TABLE *  table, const ulint *  col_map, size_t  n_dup  )

inline

Constructor.

Parameters

[in]	index	the index being sorted.
[in]	table	MySQL table, for reporting duplicate key value, if applicable
[in]	col_map	Mapping of old column numbers to new ones, or nullptr if old_table == new_table
[in]	n_dup	number of duplicates.

Member Function Documentation

empty()

bool ddl::Dup::empty ( ) const

inlinenoexcept

Returns

true if no duplicates reported yet.

report() [1/3]

void ddl::Dup::report ( )

noexcept

Report a duplicate key, saved in m_entry member.

This function will report the duplicate key to the m_table->record[0]. Care needs to be taken when multiple threads call this function, which could result in corruption of the record in m_table->record[0].

report() [2/3]

void ddl::Dup::report ( const dfield_t *  entry )

noexcept

Report a duplicate key.

This function will report the duplicate key to the m_table->record[0]. Care needs to be taken when multiple threads call this function, which could result in corruption of the record in m_table->record[0].

Parameters

[in]

entry

the duplicate key.

report() [3/3]

void ddl::Dup::report ( const mrec_t *  entry, const ulint *  offsets  )

noexcept

Report a duplicate key.

This function will report the duplicate key to the m_table->record[0]. Care needs to be taken when multiple threads call this function, which could result in corruption of the record in m_table->record[0].

Parameters

[in]	entry	the duplicate key.
[in]	offsets	Row offsets

save_duplicate()

void ddl::Dup::save_duplicate ( const dfield_t *  entry )

inline

Save the duplicate tuple information.

Parameters

[in]

entry

duplicate tuple of index m_index

Member Data Documentation

m_col_map

const ulint* ddl::Dup::m_col_map {}

Mapping of column numbers in table to the rebuilt table (index->table), or NULL if not rebuilding table.

m_entry

const dfield_t* ddl::Dup::m_entry {nullptr}

private

The duplicate tuple of index m_index.

m_index

dict_index_t* ddl::Dup::m_index {}

Index being sorted.

m_n_dup

size_t ddl::Dup::m_n_dup {}

Number of duplicates.

m_table

TABLE* ddl::Dup::m_table {}

MySQL table object.

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

• storage/innobase/include/ddl0ddl.h
• storage/innobase/ddl/ddl0ddl.cc