de.vxart.zipupdate
Class UpdateEngine

java.lang.Object
  de.vxart.zipupdate.UpdateEngine

public class UpdateEngine
extends java.lang.Object

The work horse of the whole update system containing the diff and patch functionality as well as hooks to register listeners.

Author:

Philipp Reichart, philipp.reichart@vxart.de

Constructor Summary

UpdateEngine()
Constructs a new UpdateEngine instance.

Method Summary

void	addProgressListener(ProgressListener listener) Registers a ProgressListener with this instance of an UpdateEngine.
static void	main(java.lang.String[] args) Provides a basic stand-alone way to update archives.
void	removeProgressListener(ProgressListener listener) Unregisters a ProgressListener with this instance of an UpdateEngine.
int	update(java.util.zip.ZipFile[] archives, UpdateLocation[] locations, java.lang.String[] messages) Updates multiple ZIP files from the given URLs.
boolean	update(java.util.zip.ZipFile archive, UpdateLocation location) Updates a ZIP file from a given URL.

Methods inherited from class java.lang.Object

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

Constructor Detail

UpdateEngine

public UpdateEngine()

Constructs a new UpdateEngine instance.

Method Detail

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Provides a basic stand-alone way to update archives.

Parameters:

args -

Throws:

java.lang.Exception

update

public int update(java.util.zip.ZipFile[] archives,
                  UpdateLocation[] locations,
                  java.lang.String[] messages)
           throws java.io.IOException

Updates multiple ZIP files from the given URLs. Displays a message for each ZIP file as it is being updated; if there are not enough messages for all ZIP files or the messages are NULL, the file name will be used.

Parameters:

archives - the ZIP files to update

locations - the locations where to look for the up-to-date ZIP files

messages - the messages to display for each ZIP file

Returns:

the number of ZIP files that have actually been updated

Throws:

java.io.IOException

update

public boolean update(java.util.zip.ZipFile archive,
                      UpdateLocation location)
               throws java.io.IOException

Updates a ZIP file from a given URL.

Parameters:

archive - the ZIP file to update

location - the location where to look for the up-to-date ZIP file

Returns:

true if any updates have actually been performed, false otherwise

Throws:

java.io.IOException

addProgressListener

public void addProgressListener(ProgressListener listener)

Registers a ProgressListener with this instance of an UpdateEngine.

removeProgressListener

public void removeProgressListener(ProgressListener listener)

Unregisters a ProgressListener with this instance of an UpdateEngine.