1 package org.eclipse.aether.spi.locator; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 import java.util.List; 23 24 /** 25 * A simple infrastructure to programmatically wire the various components of the repository system together when it is 26 * used outside of an IoC container. Once a concrete implementation of a service locator has been setup, clients could 27 * use 28 * 29 * <pre> 30 * RepositorySystem repoSystem = serviceLocator.getService( RepositorySystem.class ); 31 * </pre> 32 * 33 * to acquire the repository system. Components that implement {@link Service} will be given an opportunity to acquire 34 * further components from the locator, thereby allowing to create the complete object graph of the repository system. 35 * 36 * @deprecated Use some out-of-the-box DI implementation instead. 37 */ 38 @Deprecated 39 public interface ServiceLocator 40 { 41 42 /** 43 * Gets an instance of the specified service. 44 * 45 * @param <T> The service type. 46 * @param type The interface describing the service, must not be {@code null}. 47 * @return The service instance or {@code null} if the service could not be located/initialized. 48 */ 49 <T> T getService( Class<T> type ); 50 51 /** 52 * Gets all available instances of the specified service. 53 * 54 * @param <T> The service type. 55 * @param type The interface describing the service, must not be {@code null}. 56 * @return The (read-only) list of available service instances, never {@code null}. 57 */ 58 <T> List<T> getServices( Class<T> type ); 59 60 }