| /******************************************************************************* |
| * Copyright (c) 2011-2015 EclipseSource Muenchen GmbH and others. |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * jfaltermeier - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.emf.ecp.changebroker.internal; |
| |
| import java.util.Set; |
| |
| import org.eclipse.emf.common.notify.Notification; |
| import org.eclipse.emf.ecp.changebroker.spi.ChangeObserver; |
| |
| /** |
| * A Strategy is a registry/ruleset which allows to identify if a notification is relevant for an |
| * {@link ChangeObserver}. |
| * |
| * @author jfaltermeier |
| * |
| */ |
| public interface Strategy { |
| |
| /** |
| * Returns the {@link ChangeObserver observers} which should get notified. |
| * |
| * @param notification the notification |
| * @return the observers |
| */ |
| Set<ChangeObserver> getObservers(Notification notification); |
| |
| /** |
| * Returns all observers managed by this strategy. |
| * |
| * @return all observers |
| */ |
| Set<ChangeObserver> getAllObservers(); |
| |
| /** |
| * Deregisters and observer. |
| * |
| * @param observer the observer |
| */ |
| void deregister(ChangeObserver observer); |
| |
| } |