org.apache.lucene.store

Class SingleInstanceLockFactory

java.lang.Object

org.apache.lucene.store.LockFactory

org.apache.lucene.store.SingleInstanceLockFactory

public class SingleInstanceLockFactory
extends LockFactory

Implements LockFactory for a single in-process instance, meaning all locking will take place through this one instance. Only use this LockFactory when you are certain all IndexReaders and IndexWriters for a given index are running against a single shared in-process Directory instance. This is currently the default locking for RAMDirectory.

See Also:

LockFactory

Field Summary

Fields inherited from class org.apache.lucene.store.LockFactory

lockPrefix

Constructor Summary

Constructors

Constructor and Description
SingleInstanceLockFactory()

Method Summary

Methods

Modifier and Type	Method and Description
void	clearLock(String lockName) Attempt to clear (forcefully unlock and remove) the specified lock.
Lock	makeLock(String lockName) Return a new Lock instance identified by lockName.

Methods inherited from class org.apache.lucene.store.LockFactory

getLockPrefix, setLockPrefix

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleInstanceLockFactory

public SingleInstanceLockFactory()

Method Detail

makeLock

public Lock makeLock(String lockName)

Description copied from class: LockFactory

Return a new Lock instance identified by lockName.

Specified by:

makeLock in class LockFactory

Parameters:

lockName - name of the lock to be created.

clearLock

public void clearLock(String lockName)
               throws IOException

Description copied from class: LockFactory

Attempt to clear (forcefully unlock and remove) the specified lock. Only call this at a time when you are certain this lock is no longer in use.

Specified by:

clearLock in class LockFactory

Parameters:

lockName - name of the lock to be cleared.

Throws:

IOException