org.alfresco.jlan.smb.server.disk

Class NIOLockManager

java.lang.Object

org.alfresco.jlan.smb.server.disk.NIOLockManager

All Implemented Interfaces:

LockManager

public class NIOLockManager
extends Object
implements LockManager

NIO Lock Manager Class

File lock manager implementation that uses the Java NIO file locking capabilities.

Author:

gkspencer

Constructor Summary

Constructors

Constructor and Description
NIOLockManager()

Method Summary

Methods

Modifier and Type	Method and Description
FileLock	createLockObject(SrvSession sess, TreeConnection tree, NetworkFile file, long offset, long len, int pid) Create a lock object, allows the FileLock object to be extended
void	lockFile(SrvSession sess, TreeConnection tree, NetworkFile file, FileLock lock) Lock a byte range within a file, or the whole file.
void	releaseLocksForFile(SrvSession sess, TreeConnection tree, NetworkFile file) Release all locks that a session has on a file.
void	unlockFile(SrvSession sess, TreeConnection tree, NetworkFile file, FileLock lock) Unlock a byte range within a file, or the whole file

Methods inherited from class java.lang.Object

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

Constructor Detail

NIOLockManager

public NIOLockManager()

Method Detail

lockFile

public void lockFile(SrvSession sess,
            TreeConnection tree,
            NetworkFile file,
            FileLock lock)
              throws LockConflictException,
                     IOException

Lock a byte range within a file, or the whole file.

Specified by:

lockFile in interface LockManager

Parameters:

sess - SrvSession

tree - TreeConnection

file - NetworkFile

lock - FileLock

Throws:

LockConflictException

IOException

unlockFile

public void unlockFile(SrvSession sess,
              TreeConnection tree,
              NetworkFile file,
              FileLock lock)
                throws NotLockedException,
                       IOException

Unlock a byte range within a file, or the whole file

Specified by:

unlockFile in interface LockManager

Parameters:

sess - SrvSession

tree - TreeConnection

file - NetworkFile

lock - FileLock

Throws:

NotLockedException

IOException

createLockObject

public FileLock createLockObject(SrvSession sess,
                        TreeConnection tree,
                        NetworkFile file,
                        long offset,
                        long len,
                        int pid)

Create a lock object, allows the FileLock object to be extended

Specified by:

createLockObject in interface LockManager

Parameters:

sess - SrvSession

tree - TreeConnection

file - NetworkFile

offset - long

len - long

pid - int

Returns:

FileLock

releaseLocksForFile

public void releaseLocksForFile(SrvSession sess,
                       TreeConnection tree,
                       NetworkFile file)

Release all locks that a session has on a file. This method is called to perform cleanup if a file is closed that has active locks or if a session abnormally terminates.

Specified by:

releaseLocksForFile in interface LockManager

Parameters:

sess - SrvSession

tree - TreeConnection

file - NetworkFile