org.apache.lucene.store

Class SimpleFSDirectory

java.lang.Object

org.apache.lucene.store.Directory

org.apache.lucene.store.FSDirectory

org.apache.lucene.store.SimpleFSDirectory

All Implemented Interfaces:

Closeable

public class SimpleFSDirectory
extends FSDirectory

A straightforward implementation of FSDirectory using java.io.RandomAccessFile. However, this class has poor concurrent performance (multiple threads will bottleneck) as it synchronizes when multiple threads read from the same file. It's usually better to use NIOFSDirectory or MMapDirectory instead.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	SimpleFSDirectory.SimpleFSIndexInput

Nested classes/interfaces inherited from class org.apache.lucene.store.FSDirectory

FSDirectory.FSIndexOutput

Field Summary

Fields inherited from class org.apache.lucene.store.FSDirectory

DEFAULT_READ_CHUNK_SIZE, directory, staleFiles

Fields inherited from class org.apache.lucene.store.Directory

isOpen, lockFactory

Constructor Summary

Constructors

Constructor and Description
SimpleFSDirectory(File path) Create a new SimpleFSDirectory for the named location and NativeFSLockFactory.
SimpleFSDirectory(File path, LockFactory lockFactory) Create a new SimpleFSDirectory for the named location.

Method Summary

Methods

Modifier and Type	Method and Description
IndexInput	openInput(String name, int bufferSize) Creates an IndexInput for the file with the given name.

Methods inherited from class org.apache.lucene.store.FSDirectory

close, createOutput, deleteFile, ensureCanWrite, fileExists, fileLength, fileModified, fileModified, fsync, getDirectory, getFile, getLockID, getReadChunkSize, listAll, listAll, onIndexOutputClosed, open, open, openInput, setLockFactory, setReadChunkSize, sync, sync, toString, touchFile

Methods inherited from class org.apache.lucene.store.Directory

clearLock, copy, copy, ensureOpen, getLockFactory, makeLock

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleFSDirectory

public SimpleFSDirectory(File path,
                 LockFactory lockFactory)
                  throws IOException

Create a new SimpleFSDirectory for the named location.

Parameters:

path - the path of the directory

lockFactory - the lock factory to use, or null for the default (NativeFSLockFactory);

Throws:

IOException

SimpleFSDirectory

public SimpleFSDirectory(File path)
                  throws IOException

Create a new SimpleFSDirectory for the named location and NativeFSLockFactory.

Parameters:

path - the path of the directory

Throws:

IOException

Method Detail

openInput

public IndexInput openInput(String name,
                   int bufferSize)
                     throws IOException

Creates an IndexInput for the file with the given name.

Overrides:

openInput in class Directory

Throws:

IOException