package

org.apache.lucene.store

Binary i/o API, used for all index data.

Classes

BufferedIndexInput	Base implementation class for buffered `IndexInput`.
BufferedIndexOutput	Base implementation class for buffered `IndexOutput`.
ChecksumIndexInput	Writes bytes through to a primary IndexOutput, computing checksum as it goes.
ChecksumIndexOutput	Writes bytes through to a primary IndexOutput, computing checksum.
Directory	A Directory is a flat list of files.
FileSwitchDirectory	Expert: A Directory instance that switches files between two other Directory instances.
FSDirectory	Base class for Directory implementations that store index files in the file system.
FSLockFactory	Base class for file system based locking implementation.
IndexInput	Abstract base class for input from a file in a `Directory`.
IndexOutput	Abstract base class for output to a file in a Directory.
Lock	An interprocess mutex lock.
Lock.With	Utility class for executing code with exclusive access.
LockFactory	Base class for Locking implementation.
LockStressTest	Simple standalone tool that forever acquires & releases a lock using a specific LockFactory.
LockVerifyServer	Simple standalone server that must be running when you use `VerifyingLockFactory`.
MMapDirectory	File-based `Directory` implementation that uses mmap for reading, and `SimpleFSDirectory.SimpleFSIndexOutput` for writing.
NativeFSLockFactory	Implements `LockFactory` using native OS file locks.
NIOFSDirectory	An `FSDirectory` implementation that uses java.nio's FileChannel's positional read, which allows multiple threads to read from the same file without synchronizing.
NIOFSDirectory.NIOFSIndexInput
NoLockFactory	Use this `LockFactory` to disable locking entirely.
RAMDirectory	A memory-resident `Directory` implementation.
RAMFile	For Lucene internal use
RAMOutputStream	A memory-resident `IndexOutput` implementation.
SimpleFSDirectory	A straightforward implementation of `FSDirectory` using java.io.RandomAccessFile.
SimpleFSDirectory.SimpleFSIndexInput
SimpleFSDirectory.SimpleFSIndexInput.Descriptor
SimpleFSDirectory.SimpleFSIndexOutput
SimpleFSLockFactory	Implements `LockFactory` using `createNewFile()`.
SingleInstanceLockFactory	Implements `LockFactory` for a single in-process instance, meaning all locking will take place through this one instance.
VerifyingLockFactory	A `LockFactory` that wraps another `LockFactory` and verifies that each lock obtain/release is "correct" (never results in two processes holding the lock at the same time).

Exceptions

AlreadyClosedException	This exception is thrown when there is an attempt to access something that has already been closed.
LockObtainFailedException	This exception is thrown when the `write.lock` could not be acquired.
LockReleaseFailedException	This exception is thrown when the `write.lock` could not be released.
NoSuchDirectoryException	This exception is thrown when you try to list a non-existent directory.