org.modeshape.jcr
Class BackupObserver

java.lang.Object
  org.modeshape.jcr.BackupObserver

All Implemented Interfaces:

ChangeSetListener

@ThreadSafe
public class BackupObserver
extends Object
implements ChangeSetListener

A ChangeSetListener that captures the changes being made in a repository, forwarding the node and property changes to the supplied queue, and capturing the set of binary keys that are marked as being used or unused.

See Also:

BackupService

Constructor Summary

protected

BackupObserver(Queue<NodeKey> changedNodes)

Method Summary

Iterable<BinaryKey>	getUnusedBinaryKeys() Get the binary keys that have been marked as being unused during the time this observer was listening to the repository.
Iterable<BinaryKey>	getUsedBinaryKeys() Get the binary keys that have been marked as being used during the time this observer was listening to the repository.
void	notify(ChangeSet changeSet) Notifies a listener of the given changes.

Methods inherited from class java.lang.Object

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

Constructor Detail

BackupObserver

protected BackupObserver(Queue<NodeKey> changedNodes)

Method Detail

notify

public void notify(ChangeSet changeSet)

Description copied from interface: ChangeSetListener

Notifies a listener of the given changes.

Specified by:

notify in interface ChangeSetListener

Parameters:

changeSet - a non-null ChangeSet

getUnusedBinaryKeys

public Iterable<BinaryKey> getUnusedBinaryKeys()

Get the binary keys that have been marked as being unused during the time this observer was listening to the repository.

Returns:

the unused binary keys; never null, but possibly empty

getUsedBinaryKeys

public Iterable<BinaryKey> getUsedBinaryKeys()

Get the binary keys that have been marked as being used during the time this observer was listening to the repository.

Returns:

the used binary keys; never null, but possibly empty