| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.jackrabbit.oak.spi.whiteboard; |
| |
| import java.util.Map; |
| |
| import org.osgi.annotation.versioning.ProviderType; |
| |
| @ProviderType |
| public interface Whiteboard { |
| |
| /** |
| * Publishes the given service to the whiteboard. Use the returned |
| * registration object to unregister the service. |
| * |
| * @param type type of the service |
| * @param service service instance |
| * @param properties service properties. Those need to use {@link String} keys, but for backwards compatibility reasons this is not enforced via generics. |
| * @return service registration |
| */ |
| <T> Registration register(Class<T> type, T service, Map<?, ?> properties); |
| |
| /** |
| * Starts tracking services of the given type. |
| * |
| * @param type type of the services to track |
| * @return service tracker |
| */ |
| <T> Tracker<T> track(Class<T> type); |
| |
| /** |
| * Starts tracking services of the given type, with given attributes. |
| * |
| * @param type type of the services to track |
| * @param filterProperties only services with these properties will be tracked. |
| * Null keys are not permitted. Null values means that |
| * the property should be absent. |
| * @return service tracker |
| */ |
| <T> Tracker<T> track(Class<T> type, Map<String, String> filterProperties); |
| |
| } |