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4e2300f095
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5186 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
94 lines
3.4 KiB
Java
94 lines
3.4 KiB
Java
/*
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* Copyright (C) 2005-2007 Alfresco Software Limited.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* As a special exception to the terms and conditions of version 2.0 of
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* the GPL, you may redistribute this Program in connection with Free/Libre
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* and Open Source Software ("FLOSS") applications as described in Alfresco's
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* FLOSS exception. You should have recieved a copy of the text describing
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* the FLOSS exception, and it is also available here:
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* http://www.alfresco.com/legal/licensing"
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*/
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package org.alfresco.filesys.server.locking;
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import java.io.IOException;
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import org.alfresco.filesys.locking.FileLock;
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import org.alfresco.filesys.locking.LockConflictException;
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import org.alfresco.filesys.locking.NotLockedException;
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import org.alfresco.filesys.server.SrvSession;
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import org.alfresco.filesys.server.filesys.NetworkFile;
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import org.alfresco.filesys.server.filesys.TreeConnection;
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/**
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* Lock Manager Interface
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* <p>
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* A lock manager implementation provides file locking support for a virtual filesystem.
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*/
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public interface LockManager
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{
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/**
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* Lock a byte range within a file, or the whole file.
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*
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* @param sess SrvSession
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* @param tree TreeConnection
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* @param file NetworkFile
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* @param lock FileLock
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* @exception LockConflictException
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* @exception IOException
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*/
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public void lockFile(SrvSession sess, TreeConnection tree, NetworkFile file, FileLock lock)
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throws LockConflictException, IOException;
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/**
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* Unlock a byte range within a file, or the whole file
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*
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* @param sess SrvSession
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* @param tree TreeConnection
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* @param file NetworkFile
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* @param lock FileLock
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* @exception NotLockedException
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* @exception IOException
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*/
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public void unlockFile(SrvSession sess, TreeConnection tree, NetworkFile file, FileLock lock)
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throws NotLockedException, IOException;
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/**
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* Create a lock object, allows the FileLock object to be extended
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*
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* @param sess SrvSession
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* @param tree TreeConnection
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* @param file NetworkFile
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* @param offset long
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* @param len long
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* @param pid int
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* @return FileLock
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*/
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public FileLock createLockObject(SrvSession sess, TreeConnection tree, NetworkFile file, long offset, long len,
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int pid);
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/**
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* Release all locks that a session has on a file. This method is called to perform cleanup if a
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* file is closed that has active locks or if a session abnormally terminates.
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*
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* @param sess SrvSession
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* @param tree TreeConnection
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* @param file NetworkFile
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*/
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public void releaseLocksForFile(SrvSession sess, TreeConnection tree, NetworkFile file);
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}
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