lucene::store::RAMDirectory Class Reference

A memory-resident Directory implementation. More...

#include <RAMDirectory.h>

Inheritance diagram for lucene::store::RAMDirectory:

Public Member Functions
DEFINE_MUTABLE_MUTEX(files_mutex) void list(std	RAMDirectory ()
	Returns a null terminated array of strings, one for each file in the directory.
virtual	~RAMDirectory ()
	Destructor - only call this if you are sure the directory is not being used anymore.
	RAMDirectory (Directory *dir)
	RAMDirectory (const char *dir)
	Creates a new RAMDirectory instance from the FSDirectory.
bool	fileExists (const char *name) const
	Returns true iff the named file exists in this directory.
int64_t	fileModified (const char *name) const
	Returns the time the named file was last modified.
int64_t	fileLength (const char *name) const
	Returns the length in bytes of a file in the directory.
virtual void	renameFile (const char *from, const char *to)
	Removes an existing file in the directory.
void	touchFile (const char *name)
	Set the modified time of an existing file to now.
virtual IndexOutput *	createOutput (const char *name)
	Creates a new, empty file in the directory with the given name.
IndexInput *	openInput (const char *name)
	Returns a stream reading an existing file.
virtual void	close ()
TCHAR *	toString () const
const char *	getDirectoryType ()
Static Public Member Functions
static const char *	DirectoryType ()
Data Fields
int64_t	sizeInBytes
Protected Member Functions
virtual bool	doDeleteFile (const char *name)
	Removes an existing file in the directory.
void	_copyFromDir (Directory *dir, bool closeDir)
	Creates a new RAMDirectory instance from a different Directory implementation.
Protected Attributes
FileMap *	files

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Detailed Description

A memory-resident Directory implementation.

Locking implementation is by default the SingleInstanceLockFactory but can be changed with setLockFactory.

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Constructor & Destructor Documentation

DEFINE_MUTABLE_MUTEX (files_mutex) void list(std lucene::store::RAMDirectory::RAMDirectory

(

)

Returns a null terminated array of strings, one for each file in the directory.

Constructs an empty Directory.

virtual lucene::store::RAMDirectory::~RAMDirectory

(

)

[virtual]

Destructor - only call this if you are sure the directory is not being used anymore.

Otherwise use the ref-counting facilities of dir->close

lucene::store::RAMDirectory::RAMDirectory

(

Directory *

dir

)

lucene::store::RAMDirectory::RAMDirectory

(

const char *

dir

)

Creates a new RAMDirectory instance from the FSDirectory.

Parameters:

dir

a String specifying the full index directory path

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Member Function Documentation

virtual bool lucene::store::RAMDirectory::doDeleteFile

(

const char *

name

)

[protected, virtual]

Removes an existing file in the directory.

Implements lucene::store::Directory.

void lucene::store::RAMDirectory::_copyFromDir	(	Directory *	dir,
		bool	closeDir
	)			[protected]

Creates a new RAMDirectory instance from a different Directory implementation.

This can be used to load a disk-based index into memory.

This should be used only with indices that can fit into memory.

Parameters:

dir

a Directory value

Exceptions:

IOException

if an error occurs

bool lucene::store::RAMDirectory::fileExists

(

const char *

name

)

const [virtual]

Returns true iff the named file exists in this directory.

Implements lucene::store::Directory.

int64_t lucene::store::RAMDirectory::fileModified

(

const char *

name

)

const [virtual]

Returns the time the named file was last modified.

Implements lucene::store::Directory.

int64_t lucene::store::RAMDirectory::fileLength

(

const char *

name

)

const [virtual]

Returns the length in bytes of a file in the directory.

Implements lucene::store::Directory.

virtual void lucene::store::RAMDirectory::renameFile	(	const char *	from,
		const char *	to
	)			[virtual]

Removes an existing file in the directory.

Implements lucene::store::Directory.

void lucene::store::RAMDirectory::touchFile

(

const char *

name

)

[virtual]

Set the modified time of an existing file to now.

Implements lucene::store::Directory.

virtual IndexOutput* lucene::store::RAMDirectory::createOutput

(

const char *

name

)

[virtual]

Creates a new, empty file in the directory with the given name.

Returns a stream writing this file.

Implements lucene::store::Directory.

IndexInput* lucene::store::RAMDirectory::openInput

(

const char *

name

)

[virtual]

Returns a stream reading an existing file.

Implements lucene::store::Directory.

virtual void lucene::store::RAMDirectory::close

(

)

[virtual]

Implements lucene::store::Directory.

TCHAR* lucene::store::RAMDirectory::toString

(

)

const [virtual]

Implements lucene::store::Directory.

static const char* lucene::store::RAMDirectory::DirectoryType

(

)

[static]

const char* lucene::store::RAMDirectory::getDirectoryType

(

)

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Field Documentation

FileMap* lucene::store::RAMDirectory::files [protected]

int64_t lucene::store::RAMDirectory::sizeInBytes

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The documentation for this class was generated from the following file:

• RAMDirectory.h