1 /* 2 * Copyright (C) 2009 Google Inc. 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 com.google.inject; 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 * @author crazybob@google.com (Bob Lee) 26 * @author jessewilson@google.com (Jesse Wilson) 27 * @since 2.0 28 */ 29 public interface MembersInjector<T> { 30 31 /** 32 * Injects dependencies into the fields and methods of {@code instance}. Ignores the presence or 33 * absence of an injectable constructor. 34 * 35 * <p>Whenever Guice creates an instance, it performs this injection automatically (after first 36 * performing constructor injection), so if you're able to let Guice create all your objects for 37 * you, you'll never need to use this method. 38 * 39 * @param instance to inject members on. May be {@code null}. 40 */ injectMembers(T instance)41 void injectMembers(T instance); 42 } 43