mirror of
https://github.com/google/nomulus.git
synced 2025-04-30 20:17:51 +02:00
c458c05801
The dark lord Gosling designed the Java package naming system so that ownership flows from the DNS system. Since we own the domain name registry.google, it seems only appropriate that we should use google.registry as our package name.
45 lines
1.4 KiB
Java
45 lines
1.4 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
|
|
//
|
|
// 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 google.registry.util;
|
|
|
|
import com.google.common.base.Predicate;
|
|
|
|
/** Utility class containing {@link Predicate} methods. */
|
|
public class PredicateUtils {
|
|
|
|
/**
|
|
* A predicate for a given class X that checks if tested classes are supertypes of X.
|
|
*
|
|
* <p>We need our own predicate because Guava's class predicates are backwards.
|
|
* @see "https://github.com/google/guava/issues/1444"
|
|
*/
|
|
private static class SupertypeOfPredicate implements Predicate<Class<?>> {
|
|
|
|
private final Class<?> subClass;
|
|
|
|
SupertypeOfPredicate(Class<?> subClass) {
|
|
this.subClass = subClass;
|
|
}
|
|
|
|
@Override
|
|
public boolean apply(Class<?> superClass) {
|
|
return superClass.isAssignableFrom(subClass);
|
|
}
|
|
}
|
|
|
|
public static Predicate<Class<?>> supertypeOf(Class<?> subClass) {
|
|
return new SupertypeOfPredicate(subClass);
|
|
}
|
|
}
|