Altered_partitions Class Reference

Helper class for encapsulating new/altered partitions during ADD(HASH/KEY)/COALESCE/REORGANIZE PARTITION. More...

Public Member Functions
	Altered_partitions (uint parts)
	Constructor. More...
	~Altered_partitions ()
	Destructor. More...
bool	initialize ()
	Initialize the object. More...
void	set_part (ulint new_part_id, dict_table_t *part)
	Open and set currently used partition. More...
dict_table_t *	part (uint part_id)
	Get lower level internal table object for partition. More...
void	prepare_write (row_prebuilt_t *prebuilt, uint new_part_id) const
	To write a row, set up prebuilt for using a specified partition. More...
void	finish_write (row_prebuilt_t *prebuilt, uint new_part_id)
	After a write, update cached values for a partition from prebuilt. More...

Private Attributes
dict_table_t **	m_new_table_parts
	New partitions created during ADD(HASH/KEY)/COALESCE/REORGANIZE PARTITION. More...
ins_node_t **	m_ins_nodes
	Insert nodes per partition. More...
byte *	m_bitset
	bytes for sql_stat_start bitset More...
Sql_stat_start_parts	m_sql_stat_start
	sql_stat_start per partition More...
trx_id_t *	m_trx_ids
	Trx id per partition. More...
size_t	m_num_new_parts
	Number of new partitions. More...

Detailed Description

Helper class for encapsulating new/altered partitions during ADD(HASH/KEY)/COALESCE/REORGANIZE PARTITION.

Here as many partition slots as in new table would be created, it's OK for ADD/COALESCE PARTITION, however more partition slots would probably be created for REORGANIZE PARTITION. Considering that it's easy to get table in this way, it's still OK.

Constructor & Destructor Documentation

Altered_partitions()

Altered_partitions::Altered_partitions ( uint  parts )

inline

Constructor.

Parameters

[in]

parts

total partitions

~Altered_partitions()

Altered_partitions::~Altered_partitions

(

)

Destructor.

Member Function Documentation

finish_write()

void Altered_partitions::finish_write ( row_prebuilt_t *  prebuilt, uint  new_part_id  )

inline

After a write, update cached values for a partition from prebuilt.

Parameters

[in,out]	prebuilt	Prebuilt to copy from.
[in]	new_part_id	Partition id to copy.

initialize()

bool Altered_partitions::initialize

(

)

Initialize the object.

Returns

false on success

Return values

true	on failure

Returns

false on success else true.

part()

dict_table_t * Altered_partitions::part ( uint  part_id )

inline

Get lower level internal table object for partition.

Parameters

[in]

part_id

Partition id.

Returns

Lower level internal table object for the partition id.

prepare_write()

void Altered_partitions::prepare_write ( row_prebuilt_t *  prebuilt, uint  new_part_id  ) const

inline

To write a row, set up prebuilt for using a specified partition.

Parameters

[in,out]	prebuilt	Prebuilt to update.
[in]	new_part_id	Partition to use.

set_part()

void Altered_partitions::set_part ( ulint  new_part_id, dict_table_t *  part  )

inline

Open and set currently used partition.

Parameters

[in]	new_part_id	Partition id to set.
[in,out]	part	Internal table object to use.

Member Data Documentation

m_bitset

byte* Altered_partitions::m_bitset

private

bytes for sql_stat_start bitset

m_ins_nodes

ins_node_t** Altered_partitions::m_ins_nodes

private

Insert nodes per partition.

m_new_table_parts

dict_table_t** Altered_partitions::m_new_table_parts

private

New partitions created during ADD(HASH/KEY)/COALESCE/REORGANIZE PARTITION.

m_num_new_parts

size_t Altered_partitions::m_num_new_parts

private

Number of new partitions.

m_sql_stat_start

Sql_stat_start_parts Altered_partitions::m_sql_stat_start

private

sql_stat_start per partition

m_trx_ids

trx_id_t* Altered_partitions::m_trx_ids

private

Trx id per partition.

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

• storage/innobase/handler/handler0alter.cc