Package org.apache.lucene.index

Class StandardDirectoryReaderOptimization

java.lang.Object

org.apache.lucene.index.StandardDirectoryReaderOptimization

public class StandardDirectoryReaderOptimization
extends Object

An optimization to open the segment readers in parallel when opening a directory.

Method Summary

Modifier and Type	Method	Description
static org.apache.lucene.index.DirectoryReader	open(org.apache.lucene.store.Directory directory, org.apache.lucene.index.IndexCommit commit, Comparator<org.apache.lucene.index.LeafReader> leafSorter, Executor executor, int parallelism)	Called from DirectoryReader.open(org.apache.lucene.store.Directory) methods.

Methods inherited from class java.lang.Object

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

Method Details

open

public static org.apache.lucene.index.DirectoryReader open(org.apache.lucene.store.Directory directory,
 org.apache.lucene.index.IndexCommit commit,
 Comparator<org.apache.lucene.index.LeafReader> leafSorter,
 Executor executor,
 int parallelism)
                                                    throws IOException

Called from DirectoryReader.open(org.apache.lucene.store.Directory) methods.

Parameters:

directory - the directory to open

commit - the index changes to open

leafSorter - a comparator for sorting leaf readers

executor - executor to use to run in parallel

parallelism - number of readers to open in parallel

Returns:

an open directory reader

Throws:

IOException - if there is a problem with the underlying implementation