com.sleepycat.je.rep.vlsn

Class VLSNIndex.BackwardVLSNScanner

java.lang.Object

com.sleepycat.je.rep.vlsn.VLSNIndex.BackwardVLSNScanner

Enclosing class:

VLSNIndex

public static class VLSNIndex.BackwardVLSNScanner
extends java.lang.Object

Assumes that VLSNs are scanned backwards. May be used by syncup to optimally search for matchpoints.

Constructor Summary

Constructors

Constructor and Description
VLSNIndex.BackwardVLSNScanner(VLSNIndex vlsnIndex)

Method Summary

Methods

Modifier and Type	Method and Description
long	getPreciseLsn(VLSN vlsn)
long	getStartingLsn(VLSN vlsn)

Methods inherited from class java.lang.Object

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

Constructor Detail

VLSNIndex.BackwardVLSNScanner

public VLSNIndex.BackwardVLSNScanner(VLSNIndex vlsnIndex)

Method Detail

getStartingLsn

public long getStartingLsn(VLSN vlsn)

getPreciseLsn

public long getPreciseLsn(VLSN vlsn)

Parameters:

vlsn - We're requesting a LSN mapping for this vlsn

Returns:

If there is a mapping for this VLSN, return it, else return NULL_LSN. We assume that we checked that this VLSN is in the VLSNIndex's range.

See Also:

VLSNScanner#getPreciseLsn