org.abstracthorizon.danube.webdav.fs
Class FSLockingMechanism

java.lang.Object
  org.abstracthorizon.danube.webdav.lock.impl.SimpleInMemoryLockingMechanism
      org.abstracthorizon.danube.webdav.fs.FSLockingMechanism

All Implemented Interfaces:

LockingMechanism

public class FSLockingMechanism
extends SimpleInMemoryLockingMechanism

Locking mechanism that locks files on the file system by using RandomAccessFile to open the file with "rw" attributes. Unlocking is done by closing that file.

Note: So far it is confirmed that it works only on Windows machines

Author:

Daniel Sendula

Field Summary

protected Map<Object,RandomAccessFile>

fsLocks Map of locks

Fields inherited from class org.abstracthorizon.danube.webdav.lock.impl.SimpleInMemoryLockingMechanism

harvestMinimumInterval, lockResources, nextHarvested, resourcesLocks, tokenLocks

Fields inherited from interface org.abstracthorizon.danube.webdav.lock.LockingMechanism

SCOPE_EXCLUSIVE, SCOPE_NONE, SCOPE_SHARED, TYPE_WRITE

Constructor Summary

FSLockingMechanism()
Constructor

Method Summary

boolean	lockResource(Lock lock, Object resource) Locks the file
void	unlockResources(Lock lock) Unlocks the file

Methods inherited from class org.abstracthorizon.danube.webdav.lock.impl.SimpleInMemoryLockingMechanism

createLock, createLockImpl, findLock, getHarvestMinimumInterval, getLocks, getResources, getSupportedLockScopes, harvestLocks, isAccessAllowed, isLocked, removeLock, removeLocks, setHarvestMinimumInterval

Methods inherited from class java.lang.Object

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

Field Detail

fsLocks

protected Map<Object,RandomAccessFile> fsLocks

Map of locks

Constructor Detail

FSLockingMechanism

public FSLockingMechanism()

Constructor

Method Detail

lockResource

public boolean lockResource(Lock lock,
                            Object resource)

Locks the file

Specified by:

lockResource in interface LockingMechanism

Overrides:

lockResource in class SimpleInMemoryLockingMechanism

Parameters:

lock - lock

resource - a file

Returns:

true if file is locked

unlockResources

public void unlockResources(Lock lock)

Unlocks the file

Specified by:

unlockResources in interface LockingMechanism

Overrides:

unlockResources in class SimpleInMemoryLockingMechanism

Parameters:

lock - lock