tkrzw::DBMUpdateLoggerSecondShard Class Reference

Update logger adapter for the second shard and later. More...

#include <tkrzw_dbm_ulog.h>

Public Member Functions
	DBMUpdateLoggerSecondShard ()
	Default constructor. More...
	DBMUpdateLoggerSecondShard (DBM::UpdateLogger *ulog)
	Constructor. More...
void	SetUpdateLogger (DBM::UpdateLogger *ulog)
	Set the update logger to do actual logging. More...
Status	WriteSet (std::string_view key, std::string_view value) override
	Writes a log for modifying an existing record or adding a new record. More...
Status	WriteRemove (std::string_view key) override
	Writes a log for removing an existing record. More...
Status	WriteClear () override
	Writes a log for removing all records. More...
Public Member Functions inherited from tkrzw::DBM::UpdateLogger
virtual	~UpdateLogger ()=default
	Destructor. More...
virtual Status	Synchronize (bool hard)
	Synchronizes the metadata and content to the file system. More...

Public Attributes
DBM::UpdateLogger *	ulog_
	The internal update logger. More...

Detailed Description

Update logger adapter for the second shard and later.

Constructor & Destructor Documentation

DBMUpdateLoggerSecondShard() [1/2]

tkrzw::DBMUpdateLoggerSecondShard::DBMUpdateLoggerSecondShard

(

)

Default constructor.

DBMUpdateLoggerSecondShard() [2/2]

tkrzw::DBMUpdateLoggerSecondShard::DBMUpdateLoggerSecondShard ( DBM::UpdateLogger *  ulog )

explicit

Constructor.

Parameters

ulog	The logger to do actual logging.

Member Function Documentation

SetUpdateLogger()

void tkrzw::DBMUpdateLoggerSecondShard::SetUpdateLogger

(

DBM::UpdateLogger *

ulog

)

Set the update logger to do actual logging.

Parameters

ulog	The update logger to do actual logging.

WriteSet()

Status tkrzw::DBMUpdateLoggerSecondShard::WriteSet ( std::string_view  key, std::string_view  value  )

overridevirtual

Writes a log for modifying an existing record or adding a new record.

Parameters

key	The key of the record.
value	The new value of the record.

Returns

The result status.

Implements tkrzw::DBM::UpdateLogger.

WriteRemove()

Status tkrzw::DBMUpdateLoggerSecondShard::WriteRemove ( std::string_view  key )

overridevirtual

Writes a log for removing an existing record.

Parameters

key	The key of the record.

Returns

The result status.

Implements tkrzw::DBM::UpdateLogger.

WriteClear()

Status tkrzw::DBMUpdateLoggerSecondShard::WriteClear ( )

overridevirtual

Writes a log for removing all records.

Returns

The result status.

This does no operation.

Implements tkrzw::DBM::UpdateLogger.

Member Data Documentation

ulog_

DBM::UpdateLogger* tkrzw::DBMUpdateLoggerSecondShard::ulog_

The internal update logger.