org.apache.felix.prefs
Class ChangeSet

java.lang.Object
  org.apache.felix.prefs.ChangeSet

public class ChangeSet
extends Object

This class keeps track of the changes to a preferences node.

Field Summary

protected Set	addedChildren A set of added children.
protected Set	changedProperties A set of changed/added properties.
protected boolean	hasChanges Do we have changes at all?
protected Set	removedChildren A set of removed children.
protected Set	removedProperties A set of removed properties.

Constructor Summary

ChangeSet()

Method Summary

void	childAdded(String name) Inform that a child has been added.
void	childRemoved(String name) Inform that a child has been removed.
void	clear() Reset state to unchanged.
Collection	getAddedChildren() Return a collection with the added children names.
Collection	getChangedProperties() Return a collection with the changed property names.
Collection	getRemovedChildren() Return a collection with the removed children names.
Collection	getRemovedProperties() Return a collection with the removed property names.
boolean	hasChanges() Do we have changes?
void	importChanges(ChangeSet other) Import the changes from the other change set.
void	propertyChanged(String name) Inform that a property has been added/changed.
void	propertyRemoved(String name) Inform that a property has removed.

Methods inherited from class java.lang.Object

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

Field Detail

hasChanges

protected boolean hasChanges

Do we have changes at all?

changedProperties

protected final Set changedProperties

A set of changed/added properties.

removedProperties

protected final Set removedProperties

A set of removed properties.

addedChildren

protected final Set addedChildren

A set of added children.

removedChildren

protected final Set removedChildren

A set of removed children.

Constructor Detail

ChangeSet

public ChangeSet()

Method Detail

hasChanges

public boolean hasChanges()

Do we have changes?

Returns:

True if there are any changes.

propertyChanged

public void propertyChanged(String name)

Inform that a property has been added/changed.

Parameters:

name - The name of the property.

propertyRemoved

public void propertyRemoved(String name)

Inform that a property has removed.

Parameters:

name - The name of the property.

childAdded

public void childAdded(String name)

Inform that a child has been added.

Parameters:

name - The name of the child.

childRemoved

public void childRemoved(String name)

Inform that a child has been removed.

Parameters:

name - The name of the child.

clear

public void clear()

Reset state to unchanged.

importChanges

public void importChanges(ChangeSet other)

Import the changes from the other change set.

Parameters:

other -

getChangedProperties

public Collection getChangedProperties()

Return a collection with the changed property names.

Returns:

A collection.

getRemovedProperties

public Collection getRemovedProperties()

Return a collection with the removed property names.

Returns:

A collection.

getAddedChildren

public Collection getAddedChildren()

Return a collection with the added children names.

Returns:

A collection.

getRemovedChildren

public Collection getRemovedChildren()

Return a collection with the removed children names.

Returns:

A collection.