org.h2.mvstore

Interface MVStore.Cleaner

All Known Implementing Classes:

LobStorageMap

Enclosing class:

MVStore

public static interface MVStore.Cleaner

Callback interface to perform cleanup after some unused store versions were dropped. Currently removes LOBs, which are known to be out of scope.

Method Summary

Modifier and Type	Method and Description
void	cleanup(long oldestVersionToKeep) Actual procedure for cleanup after some unused store versions were dropped
boolean	needCleanup() Determine if cleanup is needed.

Method Detail

needCleanup

boolean needCleanup()

Determine if cleanup is needed. This is mainly performance optimization to avoid async call to cleanup().

Returns:

true if cleanup is required at this time, false otherwise

cleanup

void cleanup(long oldestVersionToKeep)

Actual procedure for cleanup after some unused store versions were dropped

Parameters:

oldestVersionToKeep - in this MVStore