1 /* 2 * Copyright (C) 2012 The Dagger Authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package dagger; 18 19 /** 20 * Injects dependencies into the fields and methods on instances of type {@code T}. Ignores the 21 * presence or absence of an injectable constructor. 22 * 23 * @param <T> type to inject members of 24 * 25 * @since 2.0 (since 1.0 without the provision that {@link #injectMembers} cannot accept 26 * {@code null}) 27 */ 28 public interface MembersInjector<T> { 29 30 /** 31 * Injects dependencies into the fields and methods of {@code instance}. Ignores the presence or 32 * absence of an injectable constructor. 33 * 34 * <p>Whenever a {@link Component} creates an instance, it performs this injection automatically 35 * (after first performing constructor injection), so if you're able to let the component create 36 * all your objects for you, you'll never need to use this method. 37 * 38 * @param instance into which members are to be injected 39 * @throws NullPointerException if {@code instance} is {@code null} 40 */ injectMembers(T instance)41 void injectMembers(T instance); 42 } 43