Package org.apache.lucene.index

Class MergeScheduler

java.lang.Object

org.apache.lucene.index.MergeScheduler

All Implemented Interfaces:

Closeable, AutoCloseable, Cloneable

Direct Known Subclasses:

ConcurrentMergeScheduler, NoMergeScheduler, SerialMergeScheduler

public abstract class MergeScheduler
extends Object
implements Closeable, Cloneable

Expert: IndexWriter uses an instance implementing this interface to execute the merges selected by a MergePolicy. The default MergeScheduler is ConcurrentMergeScheduler.

Implementers of sub-classes should make sure that clone() returns an independent instance able to work with any IndexWriter instance.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MergeScheduler()	Sole constructor.

Method Summary

Modifier and Type	Method	Description
MergeScheduler	clone()
abstract void	close()	Close this MergeScheduler.
abstract void	merge(IndexWriter writer)	Run the merges provided by IndexWriter.getNextMerge().

Methods inherited from class java.lang.Object

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

Constructor Details

MergeScheduler

protected MergeScheduler()

Sole constructor. (For invocation by subclass constructors, typically implicit.)

Method Details

merge

public abstract void merge(IndexWriter writer)
                    throws IOException

Run the merges provided by IndexWriter.getNextMerge().

Throws:

IOException

close

public abstract void close()
                    throws IOException

Close this MergeScheduler.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

clone

public MergeScheduler clone()

Overrides:

clone in class Object