1 /** 2 * Copyright (C) 2015 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.multibindings; 18 19 import static java.lang.annotation.ElementType.METHOD; 20 import static java.lang.annotation.RetentionPolicy.RUNTIME; 21 22 import com.google.inject.Module; 23 24 import java.lang.annotation.Documented; 25 import java.lang.annotation.Retention; 26 import java.lang.annotation.Target; 27 28 /** 29 * Annotates methods of a {@link Module} to add items to a {@link Multibinder}. 30 * The method's return type and binding annotation determines what Set this will 31 * contribute to. For example, 32 * 33 * <pre> 34 * {@literal @}ProvidesIntoSet 35 * {@literal @}Named("urls") 36 * String provideFooUrl(FooManager fm) { returm fm.getUrl(); } 37 * 38 * {@literal @}ProvidesIntoSet 39 * {@literal @}Named("urls") 40 * String provideBarUrl(BarManager bm) { return bm.getUrl(); } 41 * </pre> 42 * 43 * will add two items to the {@code @Named("urls") Set<String>} set. The items are bound as 44 * providers and will be evaluated at injection time. 45 * 46 * @author sameb (at) google.com (Sam Berlin) 47 * @since 4.0 48 */ 49 @Documented 50 @Target(METHOD) 51 @Retention(RUNTIME) 52 public @interface ProvidesIntoSet { 53 } 54
