Class LockFromLockStore

java.lang.Object

org.aksw.commons.lock.db.impl.LockFromLockStore

All Implemented Interfaces:

ReadWriteLock, ReadWriteLockWithOwnership

public class LockFromLockStore
extends Object
implements ReadWriteLockWithOwnership

A ReadWriteLock implementation that coordinates acquisition of the management lock and subsequent modification of the read/write lock states.

Author:

raven

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	LockFromLockStore.LockView

Field Summary

Fields

Modifier and Type	Field	Description
protected LockFromLink	mgmtLock
protected Duration	mgmtLockTtl
protected String	ownerKey
protected LockFromLink	readLock
protected Lock	readLockView
protected ResourceLock<String>	resourceLock
protected LockFromLink	writeLock
protected Lock	writeLockView

Constructor Summary

Constructors

Constructor	Description
LockFromLockStore(ResourceLock<String> resourceLock, String ownerKey, LockFromLink mgmtLock, LockFromLink readLock, LockFromLink writeLock)

Method Summary

Modifier and Type	Method	Description
boolean	checkIfLockingIsNeeded(boolean write)
Lock	getMgmtLock()
protected boolean	lock(boolean write)
protected boolean	lockCore(boolean write)
boolean	ownsReadLock()
boolean	ownsWriteLock()
Lock	readLock()
void	unlock()
protected void	unlock(boolean write)
protected void	unlockCore(boolean write)
Lock	writeLock()

Methods inherited from class Object

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

Methods inherited from interface ReadWriteLockWithOwnership

isLockedHere

Field Details

resourceLock

protected ResourceLock<String> resourceLock

mgmtLockTtl

protected Duration mgmtLockTtl

ownerKey

protected String ownerKey

mgmtLock

protected LockFromLink mgmtLock

readLock

protected LockFromLink readLock

writeLock

protected LockFromLink writeLock

readLockView

protected Lock readLockView

writeLockView

protected Lock writeLockView

Constructor Details

LockFromLockStore

public LockFromLockStore(ResourceLock<String> resourceLock,
 String ownerKey,
 LockFromLink mgmtLock,
 LockFromLink readLock,
 LockFromLink writeLock)

Method Details

readLock

public Lock readLock()

Specified by:

readLock in interface ReadWriteLock

writeLock

public Lock writeLock()

Specified by:

writeLock in interface ReadWriteLock

ownsReadLock

public boolean ownsReadLock()

Specified by:

ownsReadLock in interface ReadWriteLockWithOwnership

ownsWriteLock

public boolean ownsWriteLock()

Specified by:

ownsWriteLock in interface ReadWriteLockWithOwnership

getMgmtLock

public Lock getMgmtLock()

Specified by:

getMgmtLock in interface ReadWriteLockWithOwnership

checkIfLockingIsNeeded

public boolean checkIfLockingIsNeeded(boolean write)

lock

protected boolean lock(boolean write)

lockCore

protected boolean lockCore(boolean write)

unlock

protected void unlock(boolean write)

unlockCore

protected void unlockCore(boolean write)

unlock

public void unlock()