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Java example source code file (DefaultElementVisitor.java)

This example Java source code file (DefaultElementVisitor.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

defaultelementvisitor, elementvisitor

The DefaultElementVisitor.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.Binding;

/**
 * No-op visitor for subclassing. All interface methods simply delegate to
 * {@link #visitOther(Element)}, returning its result.
 *
 * @param <V> any type to be returned by the visit method. Use {@link Void} with
 *     {@code return null} if no return type is needed.
 *
 * @author sberlin@gmail.com (Sam Berlin)
 * @since 2.0
 */
public abstract class DefaultElementVisitor<V> implements ElementVisitor {

  /**
   * Default visit implementation. Returns {@code null}.
   */
  protected V visitOther(Element element) {
    return null;
  }

  public V visit(Message message) {
    return visitOther(message);
  }

  public <T> V visit(Binding binding) {
    return visitOther(binding);
  }

  /*if[AOP]*/
  public V visit(InterceptorBinding interceptorBinding) {
    return visitOther(interceptorBinding);
  }
  /*end[AOP]*/

  public V visit(ScopeBinding scopeBinding) {
    return visitOther(scopeBinding);
  }

  public V visit(TypeConverterBinding typeConverterBinding) {
    return visitOther(typeConverterBinding);
  }

  public <T> V visit(ProviderLookup providerLookup) {
    return visitOther(providerLookup);
  }

  public V visit(InjectionRequest<?> injectionRequest) {
    return visitOther(injectionRequest);
  }

  public V visit(StaticInjectionRequest staticInjectionRequest) {
    return visitOther(staticInjectionRequest);
  }

  public V visit(PrivateElements privateElements) {
    return visitOther(privateElements);
  }

  public <T> V visit(MembersInjectorLookup lookup) {
    return visitOther(lookup);
  }

  public V visit(TypeListenerBinding binding) {
    return visitOther(binding);
  }
  
  public V visit(ProvisionListenerBinding binding) {
    return visitOther(binding);
  }
  
  public V visit(DisableCircularProxiesOption option) {
    return visitOther(option);
  }
  
  public V visit(RequireExplicitBindingsOption option) {
    return visitOther(option);
  }
  
  public V visit(RequireAtInjectOnConstructorsOption option) {
    return visitOther(option);
  }

  public V visit(RequireExactBindingAnnotationsOption option) {
    return visitOther(option);
  }

  public V visit(ModuleAnnotatedMethodScannerBinding binding) {
    return visitOther(binding);
  }
}

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