lumis.portal.filesystem

Class FileSystemUtil

java.lang.Object

lumis.portal.filesystem.FileSystemUtil

public class FileSystemUtil
extends Object

Utility class that provides methods for use internally in the lumis.portal.filesystem package.

Since:

4.1.0

Version:

$Revision: 17047 $ $Date: 2015-03-03 14:22:22 +0000 (Tue, 03 Mar 2015) $

Constructor Summary

Constructors

Constructor and Description
FileSystemUtil()

Method Summary

Modifier and Type	Method and Description
static ReadWriteLock	acquireFileLock(File file) Acquires the lock object for the given file.
static boolean	deleteLocalFile(File file) Deletes a file locally.
static void	disposeFileLock(File file) Disposes the use of a lock for a file.
static ReadWriteLock	getFileLock(File file) Returns the lock object of a file, if it currently exists.
static boolean	isStandardFileSystem() Returns whether the used file system is a LumisPortal standard one.
static <T extends Serializable> T	sendClusterCommand(IClusterCallable<T> callable) Utility method that sends the given callable as a durable, total order cluster command.
static void	sendClusterCommand(Runnable runnable) Utility method that sends the given runnable as a durable, total order cluster command.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileSystemUtil

public FileSystemUtil()

Method Detail

acquireFileLock

public static ReadWriteLock acquireFileLock(File file)

Acquires the lock object for the given file. Must call disposeFileLock(File) after using the lock (that should be unlocked). A try/finally block should be used to guarantee the disposal.

Parameters:

file - the file.

Returns:

the lock object for the file.

Since:

4.1.0

getFileLock

public static ReadWriteLock getFileLock(File file)

Returns the lock object of a file, if it currently exists.

Parameters:

file - the file.

Returns:

the lock object or null if it is not currently acquired.

Since:

4.1.0

See Also:

acquireFileLock(File)

disposeFileLock

public static void disposeFileLock(File file)

Disposes the use of a lock for a file.

Parameters:

file - the file.

Since:

4.1.0

See Also:

acquireFileLock(File)

deleteLocalFile

public static boolean deleteLocalFile(File file)

Deletes a file locally.

Parameters:

file - the file.

Returns:

true if the file was successfully deleted, false otherwise.

Since:

4.1.0

sendClusterCommand

public static void sendClusterCommand(Runnable runnable)

Utility method that sends the given runnable as a durable, total order cluster command.

Parameters:

runnable - the runnable.

Since:

4.1.0

sendClusterCommand

public static <T extends Serializable> T sendClusterCommand(IClusterCallable<T> callable)
                                                     throws Exception

Utility method that sends the given callable as a durable, total order cluster command.

Parameters:

callable - the callable.

Returns:

the local execution result (if any).

Throws:

Exception

Since:

8.0.0

isStandardFileSystem

public static boolean isStandardFileSystem()

Returns whether the used file system is a LumisPortal standard one.

Returns:

whether the used file system is a LumisPortal standard one.

Since:

8.0.0