org.apache.lucene.index
Class MergeScheduler

java.lang.Object
  extended by org.apache.lucene.index.MergeScheduler
All Implemented Interfaces:
Closeable, 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.

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

Constructor Summary
protected MergeScheduler()
          Sole constructor.
 
Method Summary
 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 Detail

MergeScheduler

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

Method Detail

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 Closeable
Throws:
IOException

clone

public MergeScheduler clone()
Overrides:
clone in class Object


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