org.alfresco.filesys.state
Class FileStateLockManager

java.lang.Object
  org.alfresco.filesys.state.FileStateLockManager

All Implemented Interfaces:

org.alfresco.jlan.server.locking.LockManager

public class FileStateLockManager
extends java.lang.Object
implements org.alfresco.jlan.server.locking.LockManager

File State Lock Manager Class

Implementation of a lock manager that uses the file state cache to track locks on a file.

Constructor Summary

FileStateLockManager()

Method Summary

org.alfresco.jlan.locking.FileLock	createLockObject(org.alfresco.jlan.server.SrvSession sess, org.alfresco.jlan.server.filesys.TreeConnection tree, org.alfresco.jlan.server.filesys.NetworkFile file, long offset, long len, int pid) Create a lock object, use the standard FileLock object.
void	lockFile(org.alfresco.jlan.server.SrvSession sess, org.alfresco.jlan.server.filesys.TreeConnection tree, org.alfresco.jlan.server.filesys.NetworkFile file, org.alfresco.jlan.locking.FileLock lock) Lock a byte range within a file, or the whole file.
void	releaseLocksForFile(org.alfresco.jlan.server.SrvSession sess, org.alfresco.jlan.server.filesys.TreeConnection tree, org.alfresco.jlan.server.filesys.NetworkFile file) Release all locks that a session has on a file.
void	unlockFile(org.alfresco.jlan.server.SrvSession sess, org.alfresco.jlan.server.filesys.TreeConnection tree, org.alfresco.jlan.server.filesys.NetworkFile file, org.alfresco.jlan.locking.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

FileStateLockManager

public FileStateLockManager()

Method Detail

lockFile

public void lockFile(org.alfresco.jlan.server.SrvSession sess,
                     org.alfresco.jlan.server.filesys.TreeConnection tree,
                     org.alfresco.jlan.server.filesys.NetworkFile file,
                     org.alfresco.jlan.locking.FileLock lock)
              throws org.alfresco.jlan.locking.LockConflictException,
                     java.io.IOException

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

Specified by:

lockFile in interface org.alfresco.jlan.server.locking.LockManager

Parameters:

sess - SrvSession

tree - TreeConnection

file - NetworkFile

lock - FileLock

Throws:

org.alfresco.jlan.locking.LockConflictException

java.io.IOException

unlockFile

public void unlockFile(org.alfresco.jlan.server.SrvSession sess,
                       org.alfresco.jlan.server.filesys.TreeConnection tree,
                       org.alfresco.jlan.server.filesys.NetworkFile file,
                       org.alfresco.jlan.locking.FileLock lock)
                throws org.alfresco.jlan.locking.NotLockedException,
                       java.io.IOException

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

Specified by:

unlockFile in interface org.alfresco.jlan.server.locking.LockManager

Parameters:

sess - SrvSession

tree - TreeConnection

file - NetworkFile

lock - FileLock

Throws:

org.alfresco.jlan.locking.NotLockedException

java.io.IOException

createLockObject

public org.alfresco.jlan.locking.FileLock createLockObject(org.alfresco.jlan.server.SrvSession sess,
                                                           org.alfresco.jlan.server.filesys.TreeConnection tree,
                                                           org.alfresco.jlan.server.filesys.NetworkFile file,
                                                           long offset,
                                                           long len,
                                                           int pid)

Create a lock object, use the standard FileLock object.

Specified by:

createLockObject in interface org.alfresco.jlan.server.locking.LockManager

Parameters:

sess - SrvSession

tree - TreeConnection

file - NetworkFile

offset - long

len - long

pid - int

releaseLocksForFile

public void releaseLocksForFile(org.alfresco.jlan.server.SrvSession sess,
                                org.alfresco.jlan.server.filesys.TreeConnection tree,
                                org.alfresco.jlan.server.filesys.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 org.alfresco.jlan.server.locking.LockManager

Parameters:

sess - SrvSession

tree - TreeConnection

file - NetworkFile