/**
* 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.util.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)
* @since 3.0
*/
public final 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 + ")";
}
};
}
}