org.xcmis.search.lucene.index
Class ReadWriteDirectoryFactory

java.lang.Object
  org.xcmis.search.lucene.index.ReadWriteDirectoryFactory

All Implemented Interfaces:

ConcurrentDirectoryFactory

public class ReadWriteDirectoryFactory
extends Object
implements ConcurrentDirectoryFactory

Created by The eXo Platform SAS.
Date:

Version:

$Id: DirectoryReadWriteLockFactory.java 111 2008-11-11 11:11:11Z serg $

Author:

Karpenko Sergiy

Constructor Summary

ReadWriteDirectoryFactory()
Constructor.

Method Summary

File	createFile(File dir, String fileName, int dirCount) Create file with locking of dirCount parent directories.
void	lock(String dir)
void	lockRead(String dir)
void	removeDirectory(File dir, int dirCount) Try remove directory and parent directories.
boolean	tryLock(String dir)
void	unlock(String dir)
void	unlockRead(String dir)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReadWriteDirectoryFactory

public ReadWriteDirectoryFactory()

Constructor.

Method Detail

createFile

public File createFile(File dir,
                       String fileName,
                       int dirCount)
                throws IOException,
                       TransactionLogException

Create file with locking of dirCount parent directories.

Specified by:

createFile in interface ConcurrentDirectoryFactory

Parameters:

dir - - parent directory of file

fileName - - name of file

dirCount - - count of parent directories that will be locked during create file execution

Returns:

File - created file

Throws:

IOException - - I/O Exception

TransactionLogException - - if file already exist, or file or it's parent directory was not created (or not exist)

lock

public void lock(String dir)

lockRead

public void lockRead(String dir)

removeDirectory

public void removeDirectory(File dir,
                            int dirCount)
                     throws TransactionLogException

Try remove directory and parent directories. Maximum count of removed directories is dirCount.

Specified by:

removeDirectory in interface ConcurrentDirectoryFactory

Parameters:

dir - - directory to remove.

dirCount - - maximum count of removed directories. dir counted to.

Throws:

TransactionLogException - - if directory do not contain subfiles, but was not removed.

tryLock

public boolean tryLock(String dir)

unlock

public void unlock(String dir)

unlockRead

public void unlockRead(String dir)