org.apache.jackrabbit.core.query.lucene.directory

Class RAMDirectoryManager

java.lang.Object

org.apache.jackrabbit.core.query.lucene.directory.RAMDirectoryManager

All Implemented Interfaces:

DirectoryManager

public class RAMDirectoryManager
extends Object
implements DirectoryManager

RAMDirectoryManager implements a directory manager for RAMDirectory instances.

Constructor Summary

Constructors

Constructor and Description
RAMDirectoryManager()

Method Summary

Modifier and Type	Method and Description
boolean	delete(String name) Deletes the directory with the given name.
void	dispose() Frees resources associated with this directory manager.
org.apache.lucene.store.Directory	getDirectory(String name) Gets the directory with the given name.
String[]	getDirectoryNames() Returns the names of the currently available directories.
boolean	hasDirectory(String name) Checks if there exists a directory with the given name.
void	init(SearchIndex handler) Initializes the directory manager with a reference to the search index.
boolean	rename(String from, String to) Renames a directory.

Methods inherited from class java.lang.Object

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

Constructor Detail

RAMDirectoryManager

public RAMDirectoryManager()

Method Detail

init

public void init(SearchIndex handler)
          throws IOException

Initializes the directory manager with a reference to the search index.

Specified by:

init in interface DirectoryManager

Parameters:

handler - the query handler implementation.

Throws:

IOException - if an error occurs while initializing the directory manager.

hasDirectory

public boolean hasDirectory(String name)
                     throws IOException

Checks if there exists a directory with the given name.

Specified by:

hasDirectory in interface DirectoryManager

Parameters:

name - the name of a directory.

Returns:

true if the directory exists; false otherwise.

Throws:

IOException - if an error occurs while looking up directories.

getDirectory

public org.apache.lucene.store.Directory getDirectory(String name)

Gets the directory with the given name. If the directory does not yet exist then it will be created.

Specified by:

getDirectory in interface DirectoryManager

Parameters:

name - the name of a directory.

Returns:

the directory.

getDirectoryNames

public String[] getDirectoryNames()
                           throws IOException

Returns the names of the currently available directories.

Specified by:

getDirectoryNames in interface DirectoryManager

Returns:

names of the currently available directories.

Throws:

IOException - if an error occurs while retrieving the directory names.

delete

public boolean delete(String name)

Deletes the directory with the given name.

Specified by:

delete in interface DirectoryManager

Parameters:

name - the name of the directory to delete.

Returns:

true if the directory could be deleted successfully, false otherwise. This method also returns false when the directory with the given name does not exist.

rename

public boolean rename(String from,
                      String to)

Renames a directory.

Specified by:

rename in interface DirectoryManager

Parameters:

from - the name of the directory to rename.

to - the new name for the directory.

Returns:

true if the directory was successfully renamed. Returns false if there is no directory with name from or there already exists a directory with name to or an error occurs while renaming the directory.

dispose

public void dispose()

Frees resources associated with this directory manager.

Specified by:

dispose in interface DirectoryManager