Package org.apache.jackrabbit.util

Class TransientFileFactory

java.lang.Object

org.apache.jackrabbit.util.TransientFileFactory

public class TransientFileFactory
extends Object

The TransientFileFactory utility class can be used to create transient files, i.e. temporary files that are automatically removed once the associated File object is reclaimed by the garbage collector.

File deletion is handled by a low-priority background thread.

Method Summary

Modifier and Type	Method	Description
File	createTransientFile(String prefix, String suffix, File directory)	Same as File.createTempFile(String, String, File) except that the newly-created file will be automatically deleted once the returned File object has been gc'ed.
static TransientFileFactory	getInstance()	Returns the singleton TransientFileFactory instance.
static void	shutdown()	Shuts this factory down removing all temp files and removes shutdown hook.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static TransientFileFactory getInstance()

Returns the singleton TransientFileFactory instance.

createTransientFile

public File createTransientFile(String prefix,
                                String suffix,
                                File directory)
                         throws IOException

Same as File.createTempFile(String, String, File) except that the newly-created file will be automatically deleted once the returned File object has been gc'ed.

Parameters:

prefix - The prefix string to be used in generating the file's name; must be at least three characters long

suffix - The suffix string to be used in generating the file's name; may be null, in which case the suffix ".tmp" will be used

directory - The directory in which the file is to be created, or null if the default temporary-file directory is to be used

Returns:

the newly-created empty file

Throws:

IOException - If a file could not be created

shutdown

public static void shutdown()

Shuts this factory down removing all temp files and removes shutdown hook.

Warning!!!

This should be called by a web-application IF it is unloaded AND IF jackrabbit-jcr-commons.jar had been loaded by the webapp classloader. This must be called after all repositories had been stopped, so use with great care!

See http://issues.apache.org/jira/browse/JCR-1636 for details.