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Java example source code file (BindingScopingVisitor.java)

This example Java source code file (BindingScopingVisitor.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

annotation, bindingscopingvisitor

The BindingScopingVisitor.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.Scope;

import java.lang.annotation.Annotation;

/**
 * Visits each of the strategies used to scope an injection.
 *
 * @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 BindingScopingVisitor<V> {

  /**
   * Visit an eager singleton or single instance. This scope strategy is found on both module and
   * injector bindings.
   */
  V visitEagerSingleton();

  /**
   * Visit a scope instance. This scope strategy is found on both module and injector bindings.
   */
  V visitScope(Scope scope);

  /**
   * Visit a scope annotation. This scope strategy is found only on module bindings. The instance
   * that implements this scope is registered by {@link com.google.inject.Binder#bindScope(Class,
   * Scope) Binder.bindScope()}.
   */
  V visitScopeAnnotation(Class<? extends Annotation> scopeAnnotation);

  /**
   * Visit an unspecified or unscoped strategy. On a module, this strategy indicates that the
   * injector should use scoping annotations to find a scope. On an injector, it indicates that
   * no scope is applied to the binding. An unscoped binding will behave like a scoped one when it
   * is linked to a scoped binding.
   */
  V visitNoScoping();
}

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