com.sleepycat.je.recovery

Class RollbackTracker.BackwardScanner

java.lang.Object

com.sleepycat.je.recovery.RollbackTracker.Scanner

com.sleepycat.je.recovery.RollbackTracker.BackwardScanner

Enclosing class:

RollbackTracker

 class RollbackTracker.BackwardScanner
extends RollbackTracker.Scanner

In a backward scanner, the currentPeriod field is always pointing to the period that contains this lsn. If the lsn is not in a period, the currentPeriod is the period that is just before this lsn. If there is no period before this lsn, the currentPeriod field is null.

Field Summary

Fields inherited from class com.sleepycat.je.recovery.RollbackTracker.Scanner

target

Constructor Summary

Constructors

Constructor and Description
RollbackTracker.BackwardScanner()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	positionAndCheck(long lsn, long txnId) Return true if this transactional log entry is something that should be rolled back in this rollback period.

Methods inherited from class com.sleepycat.je.recovery.RollbackTracker.Scanner

needsRollback, rollback

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RollbackTracker.BackwardScanner

RollbackTracker.BackwardScanner()

Method Detail

positionAndCheck

public boolean positionAndCheck(long lsn,
                       long txnId)

Description copied from class: RollbackTracker.Scanner

Return true if this transactional log entry is something that should be rolled back in this rollback period. The Scanner's position can be changed by this call. Update the target field if necessary.

Specified by:

positionAndCheck in class RollbackTracker.Scanner