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Java example source code file (InternalFactoryToInitializableAdapter.java)

This example Java source code file (InternalFactoryToInitializableAdapter.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.

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Java - Java tags/keywords

constructioncontext, dependency, errorsexception, internalcontext, internalfactorytoinitializableadapter, object, override, providerinternalfactory, provisionlistenerstackcallback, string

The InternalFactoryToInitializableAdapter.java Java example source code

 * Copyright (C) 2011 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 static com.google.common.base.Preconditions.checkNotNull;

import com.google.inject.spi.Dependency;
import com.google.inject.spi.ProviderInstanceBinding;

 * Adapts {@link ProviderInstanceBinding} providers, ensuring circular proxies
 * fail (or proxy) properly.
 * @author sameb@google.com (Sam Berlin)
final class InternalFactoryToInitializableAdapter<T> extends ProviderInternalFactory {

  private final ProvisionListenerStackCallback<T> provisionCallback;
  private final Initializable<? extends javax.inject.Provider initializable;

  public InternalFactoryToInitializableAdapter(
      Initializable<? extends javax.inject.Provider initializable,
      Object source, ProvisionListenerStackCallback<T> provisionCallback) {
    this.provisionCallback = checkNotNull(provisionCallback, "provisionCallback");
    this.initializable = checkNotNull(initializable, "provider");

  public T get(Errors errors, InternalContext context, Dependency<?> dependency, boolean linked)
      throws ErrorsException {
    return circularGet(initializable.get(errors), errors, context, dependency,
  protected T provision(javax.inject.Provider<? extends T> provider, Errors errors,
      Dependency<?> dependency, ConstructionContext constructionContext) throws ErrorsException {
    try {
      return super.provision(provider, errors, dependency, constructionContext);
    } catch(RuntimeException userException) {
      throw errors.withSource(source).errorInProvider(userException).toException();

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

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