| /** |
| * 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 java.io.Serializable; |
| import java.lang.annotation.Annotation; |
| import javax.inject.Named; |
| 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() {} |
| |
| public static Named named(String name) { |
| return new NamedImpl(name); |
| } |
| |
| /** |
| * 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 + ")"; |
| } |
| }; |
| } |
| |
| // TODO: support binding properties like Names does? |
| |
| private static class NamedImpl implements Named, Serializable { |
| private final String value; |
| |
| NamedImpl(String value) { |
| this.value = checkNotNull(value, "name"); |
| } |
| |
| public String value() { |
| return value; |
| } |
| |
| @Override public int hashCode() { |
| // This is specified in java.lang.Annotation. |
| return (127 * "value".hashCode()) ^ value.hashCode(); |
| } |
| |
| @Override public boolean equals(Object o) { |
| if (!(o instanceof Named)) { |
| return false; |
| } |
| |
| Named other = (Named) o; |
| return value.equals(other.value()); |
| } |
| |
| @Override public String toString() { |
| return "@" + Named.class.getName() + "(value=" + value + ")"; |
| } |
| |
| public Class<? extends Annotation> annotationType() { |
| return Named.class; |
| } |
| |
| private static final long serialVersionUID = 0; |
| } |
| } |