com.sleepycat.je.evictor

Class PrivateSelector

java.lang.Object

com.sleepycat.je.evictor.TargetSelector

com.sleepycat.je.evictor.PrivateSelector

 class PrivateSelector
extends TargetSelector

The standard eviction selector that operates on the INList for a single environment. A single iterator over the INList is used to implement getNextIN.

Nested Class Summary

Nested classes/interfaces inherited from class com.sleepycat.je.evictor.TargetSelector

TargetSelector.EvictProfile, TargetSelector.ScanInfo, TargetSelector.SetupInfo

Field Summary

Fields inherited from class com.sleepycat.je.evictor.TargetSelector

stats

Constructor Summary

Constructors

Constructor and Description
PrivateSelector(EnvironmentImpl envImpl)

Method Summary

Methods

Modifier and Type	Method and Description
void	addEnvironment(EnvironmentImpl unused) Only supported by SharedSelector.
boolean	checkEnv(EnvironmentImpl env) Only supported by SharedSelector.
(package private) StatGroup	getINListStats(StatsConfig config) Return stats for the single INList covered by this evictor.
(package private) IN	getNextIN() Returns the next IN, wrapping if necessary.
(package private) java.util.Iterator<IN>	getScanIterator()
StatGroup	loadStats(StatsConfig config)
void	noteINListChange(int nINs) Do nothing.
void	removeEnvironment(EnvironmentImpl unused) Only supported by SharedSelector.
(package private) void	setScanIterator(java.util.Iterator<IN> iter)
(package private) TargetSelector.SetupInfo	startBatch(boolean doSpecialEviction) Initializes the iterator, and performs special eviction once per batch.

Methods inherited from class com.sleepycat.je.evictor.TargetSelector

normalizeLevel, selectIN

Methods inherited from class java.lang.Object

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

Constructor Detail

PrivateSelector

public PrivateSelector(EnvironmentImpl envImpl)
                throws DatabaseException

Throws:

DatabaseException

Method Detail

loadStats

public StatGroup loadStats(StatsConfig config)

Overrides:

loadStats in class TargetSelector

noteINListChange

public void noteINListChange(int nINs)

Do nothing.

Specified by:

noteINListChange in class TargetSelector

startBatch

TargetSelector.SetupInfo startBatch(boolean doSpecialEviction)
                              throws DatabaseException

Initializes the iterator, and performs special eviction once per batch.

Specified by:

startBatch in class TargetSelector

Parameters:

doSpecialEviction - Do non-tree eviction, such as flushing the UtilizationProfile. Since special eviction is serialized, and does require I/O, some callers may not want to be blocked doing this

Throws:

DatabaseException

getNextIN

IN getNextIN()

Returns the next IN, wrapping if necessary.

Specified by:

getNextIN in class TargetSelector

getINListStats

StatGroup getINListStats(StatsConfig config)

Return stats for the single INList covered by this evictor.

Specified by:

getINListStats in class TargetSelector

getScanIterator

java.util.Iterator<IN> getScanIterator()

Specified by:

getScanIterator in class TargetSelector

setScanIterator

void setScanIterator(java.util.Iterator<IN> iter)

Specified by:

setScanIterator in class TargetSelector

addEnvironment

public void addEnvironment(EnvironmentImpl unused)

Only supported by SharedSelector.

Specified by:

addEnvironment in class TargetSelector

removeEnvironment

public void removeEnvironment(EnvironmentImpl unused)

Only supported by SharedSelector.

Specified by:

removeEnvironment in class TargetSelector

checkEnv

public boolean checkEnv(EnvironmentImpl env)

Only supported by SharedSelector.

Specified by:

checkEnv in class TargetSelector