upd_t Struct Reference

#include <row0upd.h>

Public Member Functions
void	append (const upd_field_t &field)
	Append an update field to the end of array. More...
bool	is_modified (const ulint field_no) const
	Determine if the given field_no is modified. More...
void	reset ()
	Reset the update fields. More...
bool	validate () const
bool	is_partially_updated (ulint field_no) const
	Check if the given field number is partially updated. More...
upd_field_t *	get_field_by_field_no (ulint field_no, dict_index_t *index) const
const Binary_diff_vector *	get_binary_diff_by_field_no (ulint field_no) const
void	empty_per_stmt_heap ()
	Empty the per_stmt_heap. More...
void	free_per_stmt_heap ()
	Free the per_stmt_heap. More...
std::ostream &	print (std::ostream &out) const
std::ostream &	print_puvect (std::ostream &out, upd_field_t *uf) const
	Print the partial update vector (puvect) of the given update field. More...

Static Public Member Functions
static size_t	get_total_modified_bytes (const Binary_diff_vector &bdv)
	Calculate the total number of bytes modified in one BLOB. More...

Public Attributes
mem_heap_t *	heap
	Heap from which memory allocated. More...
mem_heap_t *	per_stmt_heap
	Heap from which memory is allocated if required only for current statement. More...
ulint	info_bits
	New value of info bits to record; default is 0. More...
dtuple_t *	old_vrow
	Pointer to old row, used for virtual column update now. More...
dict_table_t *	table
	The table object. More...
TABLE *	mysql_table
	The mysql table object. More...
ulint	n_fields
	Number of update fields. More...
upd_field_t *	fields
	Array of update fields. More...

Member Function Documentation

append()

void upd_t::append ( const upd_field_t &  field )

inline

Append an update field to the end of array.

Parameters

[in]

field

an update field

empty_per_stmt_heap()

void upd_t::empty_per_stmt_heap ( )

inline

Empty the per_stmt_heap.

free_per_stmt_heap()

void upd_t::free_per_stmt_heap ( )

inline

Free the per_stmt_heap.

get_binary_diff_by_field_no()

const Binary_diff_vector * upd_t::get_binary_diff_by_field_no

(

ulint

field_no

)

const

get_field_by_field_no()

upd_field_t * upd_t::get_field_by_field_no	(	ulint	field_no,
		dict_index_t *	index
	)		const

get_total_modified_bytes()

static size_t upd_t::get_total_modified_bytes ( const Binary_diff_vector &  bdv )

inlinestatic

Calculate the total number of bytes modified in one BLOB.

Parameters

[in]

bdv

the binary diff vector containing all the modifications to one BLOB.

Returns

the total modified bytes.

is_modified()

bool upd_t::is_modified ( const ulint  field_no ) const

inline

Determine if the given field_no is modified.

Returns

true if modified, false otherwise.

is_partially_updated()

bool upd_t::is_partially_updated

(

ulint

field_no

)

const

Check if the given field number is partially updated.

Parameters

[in]

field_no

the field number.

Returns

true if partially updated, false otherwise.

print()

std::ostream & upd_t::print

(

std::ostream &

out

)

const

print_puvect()

std::ostream & upd_t::print_puvect	(	std::ostream &	out,
		upd_field_t *	uf
	)		const

Print the partial update vector (puvect) of the given update field.

Parameters

[in,out]	out	the output stream
[in]	uf	the updated field.

Returns

the output stream.

reset()

void upd_t::reset ( void  )

inline

Reset the update fields.

validate()

bool upd_t::validate ( ) const

inline

Member Data Documentation

fields

upd_field_t* upd_t::fields

Array of update fields.

heap

mem_heap_t* upd_t::heap

Heap from which memory allocated.

This is not a new heap, rather will point to other heap. Therefore memory allocated from this heap is released when the pointed heap is freed or emptied.

info_bits

ulint upd_t::info_bits

New value of info bits to record; default is 0.

mysql_table

TABLE* upd_t::mysql_table

The mysql table object.

n_fields

ulint upd_t::n_fields

Number of update fields.

old_vrow

dtuple_t* upd_t::old_vrow

Pointer to old row, used for virtual column update now.

per_stmt_heap

mem_heap_t* upd_t::per_stmt_heap

Heap from which memory is allocated if required only for current statement.

This heap is emtied at the end of statement from inside ha_innobase::end_stmt().

table

dict_table_t* upd_t::table

The table object.

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

• storage/innobase/include/row0upd.h
• storage/innobase/row/row0upd.cc