| /** |
| * 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, |
| * 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.util; |
| |
| import static com.google.inject.internal.Preconditions.checkNotNull; |
| import javax.inject.Provider; |
| |
| /** |
| * Utility methods for use with <a href="http://code.google.com/p/atinject/">JSR |
| * 330</a>. |
| * |
| * @author jessewilson@google.com (Jesse Wilson) |
| */ |
| public class Jsr330 { |
| |
| private Jsr330() {} |
| |
| /** |
| * Returns a Guice-friendly {@code com.google.inject.Provider} for the given |
| * JSR-330 {@code javax.inject.Provider}. The converse method is unnecessary, |
| * since Guice providers directly implement the JSR-330 interface. |
| */ |
| public static <T> com.google.inject.Provider<T> guicify(Provider<T> provider) { |
| if (provider instanceof com.google.inject.Provider) { |
| return (com.google.inject.Provider<T>) provider; |
| } |
| |
| final Provider<T> delegate = checkNotNull(provider, "provider"); |
| return new com.google.inject.Provider<T>() { |
| public T get() { |
| return delegate.get(); |
| } |
| |
| @Override public String toString() { |
| return "guicified(" + delegate + ")"; |
| } |
| }; |
| } |
| } |