org.apache.solr.core

Class EphemeralDirectoryFactory

java.lang.Object

org.apache.solr.core.DirectoryFactory

org.apache.solr.core.CachingDirectoryFactory

org.apache.solr.core.EphemeralDirectoryFactory

All Implemented Interfaces:

Closeable, AutoCloseable, NamedListInitializedPlugin

Direct Known Subclasses:

RAMDirectoryFactory

public abstract class EphemeralDirectoryFactory
extends CachingDirectoryFactory

Directory provider for implementations that do not persist over reboots.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.solr.core.CachingDirectoryFactory

CachingDirectoryFactory.CacheValue, CachingDirectoryFactory.CloseListener

Nested classes/interfaces inherited from class org.apache.solr.core.DirectoryFactory

DirectoryFactory.DirContext

Field Summary

Fields inherited from class org.apache.solr.core.CachingDirectoryFactory

byDirectoryCache, byPathCache, closeListeners, removeEntries

Fields inherited from class org.apache.solr.core.DirectoryFactory

coreContainer, dataHomePath, INDEX_W_TIMESTAMP_REGEX, IOCONTEXT_NO_CACHE, LOCK_TYPE_HDFS, LOCK_TYPE_NATIVE, LOCK_TYPE_NONE, LOCK_TYPE_SIMPLE, LOCK_TYPE_SINGLE

Constructor Summary

Constructors

Constructor and Description
EphemeralDirectoryFactory()

Method Summary

Modifier and Type	Method and Description
void	cleanupOldIndexDirectories(String dataDirPath, String currentIndexDirPath, boolean reload)
boolean	exists(String path) Returns true if a Directory exists for a given path in the underlying (stable) storage and contains at least one file.
boolean	isAbsolute(String path)
boolean	isPersistent()
void	remove(Directory dir) Removes the Directory's persistent storage.
void	remove(String path) This remove is special in that it may be called even after the factory has been closed.

Methods inherited from class org.apache.solr.core.CachingDirectoryFactory

addCloseListener, close, deleteOldIndexDirectory, doneWithDirectory, get, getLivePaths, getPath, incRef, init, normalize, release, remove, remove, removeDirectory, stripTrailingSlash

Methods inherited from class org.apache.solr.core.DirectoryFactory

create, createLockFactory, empty, getBaseDir, getDataHome, initCoreContainer, isSharedStorage, move, renameWithOverwrite, searchersReserveCommitPoints, size, size, sizeOf, sizeOfDirectory

Methods inherited from class java.lang.Object

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

Constructor Detail

EphemeralDirectoryFactory

public EphemeralDirectoryFactory()

Method Detail

exists

public boolean exists(String path)
               throws IOException

Description copied from class: DirectoryFactory

Returns true if a Directory exists for a given path in the underlying (stable) storage and contains at least one file. Note that the existence of a Directory Object as returned by a previous call to the DirectoryFactory.get(java.lang.String, org.apache.solr.core.DirectoryFactory.DirContext, java.lang.String) method (on the specified path) is not enough to cause this method to return true. Some prior user of that Directory must have written & synced at least one file to that Directory (and at least one file must still exist)

Overrides:

exists in class CachingDirectoryFactory

Throws:

IOException - If there is a low-level I/O error.

isPersistent

public boolean isPersistent()

Specified by:

isPersistent in class DirectoryFactory

Returns:

true if data is kept after close.

isAbsolute

public boolean isAbsolute(String path)

Overrides:

isAbsolute in class DirectoryFactory

Parameters:

path - the path to check

Returns:

true if absolute, as in not relative

remove

public void remove(Directory dir)
            throws IOException

Description copied from class: DirectoryFactory

Removes the Directory's persistent storage. For example: A file system impl may remove the on disk directory.

Overrides:

remove in class CachingDirectoryFactory

Throws:

IOException - If there is a low-level I/O error.

remove

public void remove(String path)
            throws IOException

Description copied from class: DirectoryFactory

This remove is special in that it may be called even after the factory has been closed. Remove only makes sense for persistent directory factories.

Overrides:

remove in class CachingDirectoryFactory

Parameters:

path - to remove

Throws:

IOException - If there is a low-level I/O error.

cleanupOldIndexDirectories

public void cleanupOldIndexDirectories(String dataDirPath,
                                       String currentIndexDirPath,
                                       boolean reload)

Overrides:

cleanupOldIndexDirectories in class DirectoryFactory