Package org.apache.lucene.index

Class KeepOnlyLastCommitDeletionPolicy

java.lang.Object

org.apache.lucene.index.IndexDeletionPolicy

org.apache.lucene.index.KeepOnlyLastCommitDeletionPolicy

All Implemented Interfaces:

Cloneable

public final class KeepOnlyLastCommitDeletionPolicy
extends IndexDeletionPolicy

This IndexDeletionPolicy implementation that keeps only the most recent commit and immediately removes all prior commits after a new commit is done. This is the default deletion policy.

Constructor Summary

Constructors

Constructor	Description
KeepOnlyLastCommitDeletionPolicy()	Sole constructor.

Method Summary

Modifier and Type	Method	Description
void	onCommit(List<? extends IndexCommit> commits)	Deletes all commits except the most recent one.
void	onInit(List<? extends IndexCommit> commits)	Deletes all commits except the most recent one.

Methods inherited from class org.apache.lucene.index.IndexDeletionPolicy

clone

Methods inherited from class java.lang.Object

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

Constructor Details

KeepOnlyLastCommitDeletionPolicy

public KeepOnlyLastCommitDeletionPolicy()

Sole constructor.

Method Details

onInit

public void onInit(List<? extends IndexCommit> commits)

Deletes all commits except the most recent one.

Specified by:

onInit in class IndexDeletionPolicy

Parameters:

commits - List of current point-in-time commits, sorted by age (the 0th one is the oldest commit). Note that for a new index this method is invoked with an empty list.

onCommit

public void onCommit(List<? extends IndexCommit> commits)

Deletes all commits except the most recent one.

Specified by:

onCommit in class IndexDeletionPolicy

Parameters:

commits - List of IndexCommit, sorted by age (the 0th one is the oldest commit).