Class NIOFSDirectory

An FSDirectory implementation that uses 's positional read, which allows multiple threads to read from the same file without synchronizing.

This class only uses when reading; writing is achieved with FSDirectory.FSIndexOutput.

NOTE: NIOFSDirectory is not recommended on Windows because of a bug in how FileChannel.read is implemented in Sun's JRE. Inside of the implementation the position is apparently synchronized. See here for details.

NOTE: Accessing this class either directly or indirectly from a thread while it's interrupted can close the underlying file descriptor immediately if at the same time the thread is blocked on IO. The file descriptor will remain closed and subsequent access to NIOFSDirectory will throw a . If your application uses either or you should use SimpleFSDirectory in favor of NIOFSDirectory.

Inheritance
System.Object
Directory
BaseDirectory
FSDirectory
NIOFSDirectory
Inherited Members
Namespace: Lucene.Net.Store
Assembly: Lucene.Net.dll
Syntax
public class NIOFSDirectory : FSDirectory

Constructors

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NIOFSDirectory(DirectoryInfo)

Create a new NIOFSDirectory for the named location and NativeFSLockFactory.

Declaration
public NIOFSDirectory(DirectoryInfo path)
Parameters
Type Name Description
DirectoryInfo path

the path of the directory

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NIOFSDirectory(DirectoryInfo, LockFactory)

Create a new NIOFSDirectory for the named location.

Declaration
public NIOFSDirectory(DirectoryInfo path, LockFactory lockFactory)
Parameters
Type Name Description
DirectoryInfo path

the path of the directory

LockFactory lockFactory

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

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NIOFSDirectory(String)

Create a new NIOFSDirectory for the named location and NativeFSLockFactory.

LUCENENET specific overload for convenience using string instead of .

Declaration
public NIOFSDirectory(string path)
Parameters
Type Name Description
System.String path

the path of the directory

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NIOFSDirectory(String, LockFactory)

Create a new NIOFSDirectory for the named location.

LUCENENET specific overload for convenience using string instead of .

Declaration
public NIOFSDirectory(string path, LockFactory lockFactory)
Parameters
Type Name Description
System.String path

the path of the directory

LockFactory lockFactory

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

Methods

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CreateSlicer(String, IOContext)

Declaration
public override Directory.IndexInputSlicer CreateSlicer(string name, IOContext context)
Parameters
Type Name Description
System.String name
IOContext context
Returns
Type Description
Directory.IndexInputSlicer
Overrides
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OpenInput(String, IOContext)

Creates an IndexInput for the file with the given name.

Declaration
public override IndexInput OpenInput(string name, IOContext context)
Parameters
Type Name Description
System.String name
IOContext context
Returns
Type Description
IndexInput
Overrides