Row_meta Struct Reference

Row metadata. More...

#include <bulk_data_service.h>

Public Types
enum class	Key_type { INT_SIGNED_ASC , INT , ANY }
	Key type for fast comparison. More...

Public Member Functions
std::string	to_string () const
	Get a string representation of this Row_meta object. More...
const Column_meta &	get_column_meta_index_order (size_t col_index) const
	Get the metadata of the given column. More...
const Column_meta &	get_column_meta (size_t col_index) const
	Get the meta data of the column. More...

Public Attributes
std::vector< Column_meta >	m_columns
	All columns in a row are arranged with key columns first. More...
std::vector< const Column_meta * >	m_columns_text_order
	All columns in a row arranged as per col_index. More...
size_t	m_bitmap_length = 0
	Total bitmap header length for the row. More...
size_t	m_header_length = 0
	Total header length. More...
size_t	m_first_key_len = 0
	Length of the first key column. More...
size_t	m_key_length = 0
	Key length in bytes for non-integer keys. More...
uint32_t	m_keys = 0
	Number of columns used in primary key. More...
uint32_t	m_non_keys = 0
	Number of columns not used in primary Key. More...
Key_type	m_key_type = Key_type::ANY
	Key type for comparison. More...
uint32_t	m_num_columns = 0
	Total number of columns. More...
size_t	m_approx_row_len = 0
	Approximate row length. More...
size_t	m_n_blob_cols {0}
	Number of columns that can be stored externally. More...
std::string	m_name
	Name of the key. More...
bool	is_pk
	true if primary key, false if secondary key. More...

Detailed Description

Row metadata.

Member Enumeration Documentation

Key_type

enum class Row_meta::Key_type

strong

Key type for fast comparison.

Enumerator
INT_SIGNED_ASC
INT
ANY

Member Function Documentation

get_column_meta()

const Column_meta & Row_meta::get_column_meta ( size_t  col_index ) const

inline

Get the meta data of the column.

Parameters

[in]

col_index

the index of the column as it appears in CSV file.

Returns

a reference to the column meta data.

get_column_meta_index_order()

const Column_meta & Row_meta::get_column_meta_index_order ( size_t  col_index ) const

inline

Get the metadata of the given column.

Parameters

[in]

col_index

position of the column in the index.

Returns

metadata of the requested column.

to_string()

std::string Row_meta::to_string ( ) const

inline

Get a string representation of this Row_meta object.

See also

Row_meta

Returns

string representation of this object.

Member Data Documentation

is_pk

bool Row_meta::is_pk

true if primary key, false if secondary key.

m_approx_row_len

size_t Row_meta::m_approx_row_len = 0

Approximate row length.

m_bitmap_length

size_t Row_meta::m_bitmap_length = 0

Total bitmap header length for the row.

m_columns

std::vector<Column_meta> Row_meta::m_columns

All columns in a row are arranged with key columns first.

m_columns_text_order

std::vector<const Column_meta *> Row_meta::m_columns_text_order

All columns in a row arranged as per col_index.

m_first_key_len

size_t Row_meta::m_first_key_len = 0

Length of the first key column.

Helps to get the row pointer from first key data pointer.

m_header_length

size_t Row_meta::m_header_length = 0

Total header length.

m_key_length

size_t Row_meta::m_key_length = 0

Key length in bytes for non-integer keys.

This is required to estimate the space required to save keys.

m_key_type

Key_type Row_meta::m_key_type = Key_type::ANY

Key type for comparison.

m_keys

uint32_t Row_meta::m_keys = 0

Number of columns used in primary key.

m_n_blob_cols

size_t Row_meta::m_n_blob_cols {0}

Number of columns that can be stored externally.

m_name

std::string Row_meta::m_name

Name of the key.

m_non_keys

uint32_t Row_meta::m_non_keys = 0

Number of columns not used in primary Key.

m_num_columns

uint32_t Row_meta::m_num_columns = 0

Total number of columns.

A key could be on a column prefix. m_columns <= m_keys + m_non_keys

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

• include/mysql/components/services/bulk_data_service.h