| /******************************************************************************* |
| * Copyright (c) 2008, 2014 Stuart McCulloch |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Stuart McCulloch - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.sisu.peaberry; |
| |
| /** |
| * A registry is a {@link ServiceWatcher} that allows lookup of services. |
| * |
| * @author mcculls@gmail.com (Stuart McCulloch) |
| */ |
| public interface ServiceRegistry |
| extends ServiceWatcher<Object> { |
| |
| /** |
| * Lookup services from the registry, constrained by the given filter. |
| * |
| * @param clazz expected service interface |
| * @param filter service attribute filter |
| * @return ordered sequence of imported services, most recommended first |
| */ |
| <T> Iterable<Import<T>> lookup(Class<T> clazz, AttributeFilter filter); |
| |
| /** |
| * Watch for services in the registry, constrained by the given filter. |
| * |
| * @param clazz expected service interface |
| * @param filter service attribute filter |
| * @param watcher the watcher that should receive any matching services |
| * |
| * @throws UnsupportedOperationException if watching is not supported |
| */ |
| <T> void watch(Class<T> clazz, AttributeFilter filter, ServiceWatcher<? super T> watcher); |
| } |