org.apache.lucene.index
Class NoMergeScheduler

java.lang.Object
  extended by org.apache.lucene.index.MergeScheduler
      extended by org.apache.lucene.index.NoMergeScheduler

public final class NoMergeScheduler
extends MergeScheduler

A MergeScheduler which never executes any merges. It is also a singleton and can be accessed through INSTANCE. Use it if you want to prevent an IndexWriter from ever executing merges, irregardless of the MergePolicy used. Note that you can achieve the same thing by using NoMergePolicy, however with NoMergeScheduler you also ensure that no unnecessary code of any MergeScheduler implementation is ever executed. Hence it is recommended to use both if you want to disable merges from ever happening.


Field Summary
static MergeScheduler INSTANCE
          The single instance of NoMergeScheduler
 
Method Summary
 void close()
          Close this MergeScheduler.
 void merge(IndexWriter writer)
          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
 

Field Detail

INSTANCE

public static final MergeScheduler INSTANCE
The single instance of NoMergeScheduler

Method Detail

close

public void close()
Description copied from class: MergeScheduler
Close this MergeScheduler.

Specified by:
close in class MergeScheduler

merge

public void merge(IndexWriter writer)
           throws CorruptIndexException,
                  IOException
Description copied from class: MergeScheduler
Run the merges provided by IndexWriter.getNextMerge().

Specified by:
merge in class MergeScheduler
Throws:
CorruptIndexException
IOException


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