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Java example source code file (TypeListenerBinding.java)

This example Java source code file (TypeListenerBinding.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

element, matcher, object, typelistener, typelistenerbinding, typeliteral

The TypeListenerBinding.java Java example source code

 * Copyright (C) 2009 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,
 * 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.TypeLiteral;
import com.google.inject.matcher.Matcher;

 * Binds types (picked using a Matcher) to an type listener. Registrations are created explicitly in
 * a module using {@link com.google.inject.Binder#bindListener(Matcher, TypeListener)} statements:
 * <pre>
 *     register(only(new TypeLiteral<PaymentService<CreditCard>>() {}), listener);</pre>
 * @author jessewilson@google.com (Jesse Wilson)
 * @since 2.0
public final class TypeListenerBinding implements Element {

  private final Object source;
  private final Matcher<? super TypeLiteral typeMatcher;
  private final TypeListener listener;

  TypeListenerBinding(Object source, TypeListener listener,
      Matcher<? super TypeLiteral typeMatcher) {
    this.source = source;
    this.listener = listener;
    this.typeMatcher = typeMatcher;

  /** Returns the registered listener. */
  public TypeListener getListener() {
    return listener;

  /** Returns the type matcher which chooses which types the listener should be notified of. */
  public Matcher<? super TypeLiteral getTypeMatcher() {
    return typeMatcher;

  public Object getSource() {
    return source;

  public <T> T acceptVisitor(ElementVisitor visitor) {
    return visitor.visit(this);

  public void applyTo(Binder binder) {
    binder.withSource(getSource()).bindListener(typeMatcher, listener);

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