tkrzw::DBMUpdateLoggerDBM Class Reference

DBM update logger to replicate updates in another DBM. More...

#include <tkrzw_dbm_ulog.h>

Public Member Functions
	DBMUpdateLoggerDBM (DBM *dbm)
	Constructor. 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...
Status	Synchronize (bool hard) override
	Synchronizes the metadata and content to the file system. More...
Public Member Functions inherited from tkrzw::DBM::UpdateLogger
virtual	~UpdateLogger ()=default
	Destructor. More...

Detailed Description

DBM update logger to replicate updates in another DBM.

Constructor & Destructor Documentation

DBMUpdateLoggerDBM()

tkrzw::DBMUpdateLoggerDBM::DBMUpdateLoggerDBM ( DBM *  dbm )

explicit

Constructor.

Parameters

dbm	A DBM object to store logs in. The ownership is not taken.

Member Function Documentation

WriteSet()

Status tkrzw::DBMUpdateLoggerDBM::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::DBMUpdateLoggerDBM::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::DBMUpdateLoggerDBM::WriteClear ( )

overridevirtual

Writes a log for removing all records.

Returns

The result status.

Implements tkrzw::DBM::UpdateLogger.

Synchronize()

Status tkrzw::DBMUpdateLoggerDBM::Synchronize ( bool  hard )

overridevirtual

Synchronizes the metadata and content to the file system.

Parameters

hard	True to do physical synchronization with the hardware or false to do only logical synchronization with the file system.

Returns

The result status.

Reimplemented from tkrzw::DBM::UpdateLogger.