Java example source code file (ElementVisitor.java)

This example Java source code file (ElementVisitor.java) is included in the alvinalexander.com "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

elementvisitor

The ElementVisitor.java Java example source code

/**
 * Copyright (C) 2008 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.spi;

import com.google.inject.Binder;
import com.google.inject.Binding;
import com.google.inject.Inject;

/**
 * Visit elements.
 *
 * @param <V> any type to be returned by the visit method. Use {@link Void} with
 *     {@code return null} if no return type is needed.
 * 
 * @since 2.0
 */
public interface ElementVisitor<V> {

  /**
   * Visit a mapping from a key (type and optional annotation) to the strategy for getting
   * instances of the type.
   */
  <T> V visit(Binding binding);

  /*if[AOP]*/
  /**
   * Visit a registration of interceptors for matching methods of matching classes.
   */
  V visit(InterceptorBinding binding);
  /*end[AOP]*/

  /**
   * Visit a registration of a scope annotation with the scope that implements it.
   */
  V visit(ScopeBinding binding);

  /**
   * Visit a registration of type converters for matching target types.
   */
  V visit(TypeConverterBinding binding);

  /**
   * Visit a request to inject the instance fields and methods of an instance.
   */
  V visit(InjectionRequest<?> request);

  /**
   * Visit a request to inject the static fields and methods of type.
   */
  V visit(StaticInjectionRequest request);

  /**
   * Visit a lookup of the provider for a type.
   */
  <T> V visit(ProviderLookup lookup);

  /**
   * Visit a lookup of the members injector.
   */
  <T> V visit(MembersInjectorLookup lookup);

  /**
   * Visit an error message and the context in which it occured.
   */
  V visit(Message message);

  /**
   * Visit a collection of configuration elements for a {@linkplain com.google.inject.PrivateBinder
   * private binder}.
   */
  V visit(PrivateElements elements);

  /**
   * Visit an injectable type listener binding.
   */
  V visit(TypeListenerBinding binding);
  
  /**
   * Visit a provision listener binding.
   *
   * @since 4.0
   */
  V visit(ProvisionListenerBinding binding);
  
  /**
   * Visit a require explicit bindings command.
   * 
   * @since 3.0
   */
  V visit(RequireExplicitBindingsOption option);
  
  /**
   * Visit a disable circular proxies command.
   * 
   * @since 3.0
   */
  V visit(DisableCircularProxiesOption option);
  
  /**
   * Visit a require explicit {@literal @}{@link Inject} command.
   * 
   * @since 4.0
   */
  V visit(RequireAtInjectOnConstructorsOption option);

  /**
   * Visit a require exact binding annotations command.
   *
   * @since 4.0
   */
  V visit(RequireExactBindingAnnotationsOption option);

  /**
   * Visits a {@link Binder#scanModulesForAnnotatedMethods} command.
   *
   * @since 4.0
   */
  V visit(ModuleAnnotatedMethodScannerBinding binding);
}