Package org.openhab.core.common.registry

Interface ProviderChangeListener<E>

Type Parameters:

E - type of the element from the provider

All Known Implementing Classes:

AbstractLinkRegistry, AbstractRegistry, ItemChannelLinkRegistry

@NonNullByDefault
public interface ProviderChangeListener<@NonNull E>

ProviderChangeListener can be added to Provider services, to listen for changes. The AbstractRegistry implements a ProviderChangeListener and subscribes itself to every added Provider.

Author:

Dennis Nobel - Initial contribution

Method Summary

Modifier and Type	Method	Description
void	added(Provider<@NonNull E> provider, @NonNull E element)	Notifies the listener that a single element has been added.
void	removed(Provider<@NonNull E> provider, @NonNull E element)	Notifies the listener that a single element has been removed.
void	updated(Provider<@NonNull E> provider, @NonNull E oldelement, @NonNull E element)	Notifies the listener that a single element has been updated.

Method Details

added

void added(Provider<@NonNull E> provider,
 @NonNull E element)

Notifies the listener that a single element has been added.

Parameters:

provider - the provider that provides the element

element - the element that has been added

removed

void removed(Provider<@NonNull E> provider,
 @NonNull E element)

Notifies the listener that a single element has been removed.

Parameters:

provider - the provider that provides the element

element - the element that has been removed

updated

void updated(Provider<@NonNull E> provider,
 @NonNull E oldelement,
 @NonNull E element)

Notifies the listener that a single element has been updated.

Parameters:

provider - the provider that provides the element

element - the element that has been updated