netx.jnlp.cache
Class Resource

java.lang.Object
  |
  +--netx.jnlp.cache.Resource

public class Resource

extends java.lang.Object

Information about a single resource to download. This class tracks the downloading of various resources of a JNLP file to local files. It can be used to download icons, jnlp and extension files, jars, and jardiff files using the version based protocol or any file using the basic download protocol.

Resources can be put into download groups by specifying a part name for the resource. The resource tracker can also be configured to prefetch resources, which are downloaded in the order added to the media tracker.

Version:

$Revision: 1.8 $

Author:

Jon A. Maxwell (JAM) - initial author

Field Summary

static int	CONNECT
static int	CONNECTED
static int	CONNECTING
static int	DOWNLOAD
static int	DOWNLOADED
static int	DOWNLOADING
static int	ERROR
static int	STARTED
static int	UNINITIALIZED status bits

Method Summary

void	addTracker(ResourceTracker tracker) Adds the tracker to the list of trackers monitoring this resource.
void	changeStatus(int clear, int add) Changes the status by clearing the flags in the first parameter and setting the flags in the second.
boolean	equals(java.lang.Object other)
protected void	fireDownloadEvent() Instructs the trackers monitoring this resource to fire a download event.
java.net.URL	getLocation() Returns the remote location of the resource.
static Resource	getResource(java.net.URL location, Version requestVersion) Return a shared Resource object representing the given location and version.
boolean	isSet(int flag) Returns true if any of the specified flags are set.
void	removeTracker(ResourceTracker tracker) Removes the tracker to the list of trackers monitoring this resource.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

UNINITIALIZED

public static final int UNINITIALIZED

status bits

CONNECT

public static final int CONNECT

CONNECTING

public static final int CONNECTING

CONNECTED

public static final int CONNECTED

DOWNLOAD

public static final int DOWNLOAD

DOWNLOADING

public static final int DOWNLOADING

DOWNLOADED

public static final int DOWNLOADED

ERROR

public static final int ERROR

STARTED

public static final int STARTED

Method Detail

getResource

public static Resource getResource(java.net.URL location,
                                   Version requestVersion)

Return a shared Resource object representing the given location and version.

getLocation

public java.net.URL getLocation()

Returns the remote location of the resource.

isSet

public boolean isSet(int flag)

Returns true if any of the specified flags are set.

changeStatus

public void changeStatus(int clear,
                         int add)

Changes the status by clearing the flags in the first parameter and setting the flags in the second. This method is synchronized on this resource.

removeTracker

public void removeTracker(ResourceTracker tracker)

Removes the tracker to the list of trackers monitoring this resource.

addTracker

public void addTracker(ResourceTracker tracker)

Adds the tracker to the list of trackers monitoring this resource.

fireDownloadEvent

protected void fireDownloadEvent()

Instructs the trackers monitoring this resource to fire a download event.

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object