org.ghost4j.util

Class DiskStore

java.lang.Object

org.ghost4j.util.DiskStore

public class DiskStore
extends Object

Singleton class used to store and retrieve files to / from a temporary disk storage.

Author:

Gilles Grousset (gi.grousset@gmail.com)

Field Summary

Fields

Modifier and Type	Field and Description
static String	ROOT_PATH

Method Summary

Methods

Modifier and Type	Method and Description
File	addFile(String key) Add a file to the store.
String	generateUniqueKey() Generates a unique diskstore key.
File	getFile(String key) Retrieve a File from a store key.
static DiskStore	getInstance() Access to the shared instance.
void	removeFile(String key) Remove a file from the store.

Methods inherited from class java.lang.Object

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

Field Detail

ROOT_PATH

public static final String ROOT_PATH

Method Detail

getInstance

public static DiskStore getInstance()

Access to the shared instance.

Returns:

The shared DiskStore instance.

generateUniqueKey

public String generateUniqueKey()

Generates a unique diskstore key. Use the JVM PID and UUID.

Returns:

A unique key as string

getFile

public File getFile(String key)

Retrieve a File from a store key. If key is unknown, null is returned.

Parameters:

key - Unique file resource identifier.

Returns:

File or null (if not found).

removeFile

public void removeFile(String key)
                throws IOException

Remove a file from the store. This also deleted the temporary file from the file system.

Parameters:

key - Unique file resource identifier.

Throws:

IOException - In case the file cannot be deleted.

addFile

public File addFile(String key)

Add a file to the store.

Parameters:

key - File unique identifier.

Returns:

The generated (empty) file.