1 /* 2 * Copyright (C) 2008 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.spi; 18 19 import com.google.inject.Binding; 20 import com.google.inject.Key; 21 import com.google.inject.Provider; 22 23 /** 24 * A binding to a {@link Provider} that delegates to the binding for the provided type. This binding 25 * is used whenever a {@code Provider<T>} is injected (as opposed to injecting {@code T} directly). 26 * 27 * @author jessewilson@google.com (Jesse Wilson) 28 * @since 2.0 29 */ 30 public interface ProviderBinding<T extends Provider<?>> extends Binding<T> { 31 32 /** 33 * Returns the key whose binding is used to {@link Provider#get provide instances}. That binding 34 * can be retrieved from an injector using {@link com.google.inject.Injector#getBinding(Key) 35 * Injector.getBinding(providedKey)} 36 */ getProvidedKey()37 Key<?> getProvidedKey(); 38 } 39