rj.tools.ccscrape

Class URLCache

java.lang.Object

rj.tools.ccscrape.URLCache

public class URLCache
extends java.lang.Object

Caches the file pointed to by an URL on the local file system. If the URL points to the local file system, bypasses the caching and passes the URL through.

Version:

$Revision: 1.2 $

Author:

Ralph Jocham

Constructor Summary

Constructors

Constructor and Description
URLCache(java.net.URL url) Creates a new instance with the url of the file to cache

Method Summary

Methods

Modifier and Type	Method and Description
java.io.File	getFile() Returns a 'local' File
void	release() Releases the file from the URL.

Methods inherited from class java.lang.Object

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

Constructor Detail

URLCache

public URLCache(java.net.URL url)

Creates a new instance with the url of the file to cache

Parameters:

url - to file which can be remote or local; must not be null

Method Detail

getFile

public java.io.File getFile()
                     throws java.io.IOException

Returns a 'local' File

Returns:

a local file containing the data pointed to by the URL. This may be the file itself if the URL already points to a local file, or it may trigger a copy if the URL points to a remote file.

Throws:

java.io.IOException

release

public void release()

Releases the file from the URL. If the URL was remote the local cache will be deleted.