net.sf.hajdbc.lock.semaphore

Class SemaphoreLockManager

java.lang.Object

net.sf.hajdbc.lock.semaphore.SemaphoreLockManager

All Implemented Interfaces:

Lifecycle, LockManager

public class SemaphoreLockManager
extends Object
implements LockManager

Author:

Paul Ferraro

Constructor Summary

Constructors

Constructor and Description
SemaphoreLockManager(boolean fair)

Method Summary

Methods

Modifier and Type	Method and Description
Lock	readLock(String object) Obtains a named read lock.
void	start() Called upon database cluster start.
void	stop() Called when database cluster is stopped.
Lock	writeLock(String object) Obtains a named write lock.

Methods inherited from class java.lang.Object

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

Constructor Detail

SemaphoreLockManager

public SemaphoreLockManager(boolean fair)

Method Detail

readLock

public Lock readLock(String object)

Description copied from interface: LockManager

Obtains a named read lock.

Specified by:

readLock in interface LockManager

Parameters:

object - an object to lock

Returns:

a read lock

See Also:

LockManager.readLock(java.lang.String)

writeLock

public Lock writeLock(String object)

Description copied from interface: LockManager

Obtains a named write lock.

Specified by:

writeLock in interface LockManager

Parameters:

object - an object to lock

Returns:

a write lock

See Also:

LockManager.writeLock(java.lang.String)

start

public void start()

Description copied from interface: Lifecycle

Called upon database cluster start.

Specified by:

start in interface Lifecycle

See Also:

Lifecycle.start()

stop

public void stop()

Description copied from interface: Lifecycle

Called when database cluster is stopped.

Specified by:

stop in interface Lifecycle

See Also:

Lifecycle.stop()