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Java example source code file (

This example Java source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

annotation, class, injectionpoint, key, moduleannotatedmethodscanner, set, util

The 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.



import java.lang.annotation.Annotation;
import java.util.Set;

 * Allows extensions to scan modules for annotated methods and bind those methods
 * as providers, similar to {@code @Provides} methods.
 * @since 4.0
public abstract class ModuleAnnotatedMethodScanner {

   * Returns the annotations this should scan for. Every method in the module that has one of these
   * annotations will create a Provider binding, with the return value of the binding being what's
   * provided and the parameters of the method being dependencies of the provider.
  public abstract Set<? extends Class annotationClasses();

   * Prepares a method for binding. This {@code key} parameter is the key discovered from looking at
   * the binding annotation and return value of the method. Implementations can modify the key to
   * instead bind to another key. For example, Multibinder may want to change
   * {@code @SetProvides String provideFoo()} to bind into a unique Key within the multibinder
   * instead of binding {@code String}.
   * <p>The injection point and annotation are provided in case the implementation wants to set the
   * key based on the property of the annotation or if any additional preparation is needed for any
   * of the dependencies. The annotation is guaranteed to be an instance of one the classes returned
   * by {@link #annotationClasses}.
  public abstract <T> Key prepareMethod(Binder binder, Annotation annotation, Key key,
      InjectionPoint injectionPoint);


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