home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (ProviderToInternalFactoryAdapter.java)

This example Java source code file (ProviderToInternalFactoryAdapter.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

contextualcallable, dependency, errors, errorsexception, injectorimpl, override, providertointernalfactoryadapter, string

The ProviderToInternalFactoryAdapter.java Java example source code

 * Copyright (C) 2006 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.internal;

import com.google.inject.Provider;
import com.google.inject.ProvisionException;
import com.google.inject.spi.Dependency;

 * @author crazybob@google.com (Bob Lee)
final class ProviderToInternalFactoryAdapter<T> implements Provider {

  private final InjectorImpl injector;
  private final InternalFactory<? extends T> internalFactory;

  public ProviderToInternalFactoryAdapter(InjectorImpl injector,
      InternalFactory<? extends T> internalFactory) {
    this.injector = injector;
    this.internalFactory = internalFactory;

  public T get() {
    final Errors errors = new Errors();
    try {
      T t = injector.callInContext(new ContextualCallable<T>() {
        public T call(InternalContext context) throws ErrorsException {
          Dependency dependency = context.getDependency();
          // Always pretend that we are a linked binding, to support
          // scoping implicit bindings.  If we are not actually a linked
          // binding, we'll fail properly elsewhere in the chain.
          return internalFactory.get(errors, context, dependency, true);
      return t;
    } catch (ErrorsException e) {
      throw new ProvisionException(errors.merge(e.getErrors()).getMessages());

  @Override public String toString() {
    return internalFactory.toString();

Other Java examples (source code examples)

Here is a short list of links related to this Java ProviderToInternalFactoryAdapter.java source code file:

my book on functional programming


new blog posts


Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.