Persister used for autoinc counters. More...

#include <dict0mem.h>

Inheritance diagram for AutoIncPersister:

Public Member Functions
ulint	write (const PersistentTableMetadata &metadata, byte *buffer, ulint size) const override
	Write the autoinc counter of a table, we can pre-calculate the size by calling get_write_size() More...

ulint	get_write_size (const PersistentTableMetadata &metadata) const override
	Pre-calculate the size of metadata to be written. More...

ulint	read (PersistentTableMetadata &metadata, const byte buffer, ulint size, bool corrupt) const override
	Read the autoinc counter from buffer, and store them to metadata object. More...

void	aggregate (PersistentTableMetadata &metadata, const PersistentTableMetadata &new_entry) const override
	Aggregate metadata entries into a single metadata instance, considering version numbers. More...

Public Member Functions inherited from Persister
virtual	~Persister ()=default
	Virtual destructor. More...

void	write_log (table_id_t id, const PersistentTableMetadata &metadata, mtr_t *mtr) const
	Write MLOG_TABLE_DYNAMIC_META for persistent dynamic metadata of table. More...

Detailed Description

Persister used for autoinc counters.

Member Function Documentation

void AutoIncPersister::aggregate	(	PersistentTableMetadata &	metadata,
		const PersistentTableMetadata &	new_entry
	)		const

overridevirtual

Aggregate metadata entries into a single metadata instance, considering version numbers.

Parameters

[in,out]	metadata	metadata object to be modified
[in]	new_entry	metadata entry from logs

Implements Persister.

ulint AutoIncPersister::get_write_size ( const PersistentTableMetadata & metadata ) const

inlineoverridevirtual

Pre-calculate the size of metadata to be written.

Parameters

[in] metadata metadata to be written

Implements Persister.

ulint AutoIncPersister::read	(	PersistentTableMetadata &	metadata,
		const byte *	buffer,
		ulint	size,
		bool *	corrupt
	)		const

overridevirtual

Read the autoinc counter from buffer, and store them to metadata object.

Read the autoinc counter from buffer, and store them to a metadata object.

Parameters

[out]	metadata	metadata where we store the read data
[in]	buffer	buffer to read
[in]	size	size of buffer
[out]	corrupt	true if we found something wrong in the buffer except incomplete buffer, otherwise false

Returns: the bytes we read from the buffer if the buffer data is complete and we get everything, 0 if the buffer is incomplete

Implements Persister.

ulint AutoIncPersister::write	(	const PersistentTableMetadata &	metadata,
		byte *	buffer,
		ulint	size
	)		const

overridevirtual

Write the autoinc counter of a table, we can pre-calculate the size by calling get_write_size()

Parameters

[in]	metadata	persistent metadata
[out]	buffer	write buffer
[in]	size	size of write buffer, should be at least get_write_size()

Implements Persister.

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