org.neo4j.kernel.api.impl.index.backup

Class LuceneIndexSnapshotFileIterator

java.lang.Object

org.neo4j.helpers.collection.PrefetchingIterator<File>

org.neo4j.kernel.api.impl.index.backup.LuceneIndexSnapshotFileIterator

All Implemented Interfaces:

AutoCloseable, Iterator<File>, org.neo4j.graphdb.Resource, org.neo4j.graphdb.ResourceIterator<File>

public class LuceneIndexSnapshotFileIterator
extends org.neo4j.helpers.collection.PrefetchingIterator<File>
implements org.neo4j.graphdb.ResourceIterator<File>

Iterator over Lucene index files for a particular snapshot. Applicable only to a single Lucene index partition. Internally uses SnapshotDeletionPolicy.snapshot() to create an IndexCommit that represents consistent state of the index for a particular point in time. Turns to be an empty iterator if index does not have any commits yet.

Field Summary

Fields inherited from interface org.neo4j.graphdb.Resource

EMPTY

Method Summary

Modifier and Type	Method and Description
void	close()
static org.neo4j.graphdb.ResourceIterator<File>	forIndex(File indexFolder, org.apache.lucene.index.IndexWriter indexWriter)

Methods inherited from class org.neo4j.helpers.collection.PrefetchingIterator

hasNext, next, peek, remove

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.neo4j.graphdb.ResourceIterator

map, stream

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next, remove

Method Detail

forIndex

public static org.neo4j.graphdb.ResourceIterator<File> forIndex(File indexFolder,
                                                                org.apache.lucene.index.IndexWriter indexWriter)
                                                         throws IOException

Throws:

IOException

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface org.neo4j.graphdb.Resource

Specified by:

close in interface org.neo4j.graphdb.ResourceIterator<File>