|
Java example source code file (ProvidesIntoOptional.java)
The ProvidesIntoOptional.java Java example source code/** * Copyright (C) 2015 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.google.inject.multibindings; import static java.lang.annotation.ElementType.METHOD; import static java.lang.annotation.RetentionPolicy.RUNTIME; import com.google.inject.Module; import java.lang.annotation.Documented; import java.lang.annotation.Retention; import java.lang.annotation.Target; /** * Annotates methods of a {@link Module} to add items to a {@link Multibinder}. * The method's return type and binding annotation determines what Optional this will * contribute to. For example, * * <pre> * {@literal @}ProvidesIntoOptional(DEFAULT) * {@literal @}Named("url") * String provideFooUrl(FooManager fm) { returm fm.getUrl(); } * * {@literal @}ProvidesIntoOptional(ACTUAL) * {@literal @}Named("url") * String provideBarUrl(BarManager bm) { return bm.getUrl(); } * </pre> * * will set the default value of {@code @Named("url") Optional<String>} to foo's URL, * and then override it to bar's URL. * * @author sameb@google.com (Sam Berlin) * @since 4.0 */ @Documented @Target(METHOD) @Retention(RUNTIME) public @interface ProvidesIntoOptional { /** * @since 4.0 */ enum Type { /** Corresponds to {@link OptionalBinder#setBinding}. */ ACTUAL, /** Corresponds to {@link OptionalBinder#setDefault}. */ DEFAULT } /** Specifies if the binding is for the actual or default value. */ Type value(); } Other Java examples (source code examples)Here is a short list of links related to this Java ProvidesIntoOptional.java source code file: |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2024 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.