org.apache.lucene.index

Class IndexSplitter

java.lang.Object

org.apache.lucene.index.IndexSplitter

public class IndexSplitter
extends Object

Command-line tool that enables listing segments in an index, copying specific segments to another index, and deleting segments from an index.

This tool does file-level copying of segments files. This means it's unable to split apart a single segment into multiple segments. For example if your index is a single segment, this tool won't help. Also, it does basic file-level copying (using simple File{In,Out}putStream) so it will not work with non FSDirectory Directory impls.

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

You can easily accidentally remove segments from your index so be careful!

NOTE: this tool is unaware of documents added atomically via IndexWriter.addDocuments(java.util.Collection<org.apache.lucene.document.Document>) or IndexWriter.updateDocuments(org.apache.lucene.index.Term, java.util.Collection<org.apache.lucene.document.Document>), which means it can easily break up such document groups.

Field Summary

Fields

Modifier and Type	Field and Description
SegmentInfos	infos

Constructor Summary

Constructors

Constructor and Description
IndexSplitter(File dir)

Method Summary

Methods

Modifier and Type	Method and Description
void	listSegments()
static void	main(String[] args)
void	remove(String[] segs)
void	split(File destDir, String[] segs)

Methods inherited from class java.lang.Object

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

Field Detail

infos

public SegmentInfos infos

Constructor Detail

IndexSplitter

public IndexSplitter(File dir)
              throws IOException

Throws:

IOException

Method Detail

main

public static void main(String[] args)
                 throws Exception

Parameters:

args -

Throws:

Exception

listSegments

public void listSegments()
                  throws IOException

Throws:

IOException

remove

public void remove(String[] segs)
            throws IOException

Throws:

IOException

split

public void split(File destDir,
         String[] segs)
           throws IOException

Throws:

IOException