org.apache.lucene.index

Class MergeScheduler

java.lang.Object

org.apache.lucene.index.MergeScheduler

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

ConcurrentMergeScheduler, NoMergeScheduler, SerialMergeScheduler

public abstract class MergeScheduler
extends Object
implements Closeable

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 Object.clone() returns an independent instance able to work with any IndexWriter instance.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MergeScheduler() Sole constructor.

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	close() Close this MergeScheduler.
abstract void	merge(IndexWriter writer, MergeTrigger trigger, boolean newMergesFound) Run the merges provided by IndexWriter.getNextMerge().

Methods inherited from class java.lang.Object

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

Constructor Detail

MergeScheduler

protected MergeScheduler()

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

Method Detail

merge

public abstract void merge(IndexWriter writer,
         MergeTrigger trigger,
         boolean newMergesFound)
                    throws IOException

Run the merges provided by IndexWriter.getNextMerge().

Parameters:

writer - the IndexWriter to obtain the merges from.

trigger - the MergeTrigger that caused this merge to happen

newMergesFound - true iff any new merges were found by the caller otherwise false

Throws:

IOException

close

public abstract void close()
                    throws IOException

Close this MergeScheduler.

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException