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- /*
- * Copyright 2000-2016 Vaadin Ltd.
- *
- * 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.vaadin.server;
-
- import java.io.Serializable;
- import java.util.Comparator;
-
- /**
- * A {@link Comparator} that is also {@link Serializable}.
- *
- * @author Vaadin Ltd
- * @param <T>
- * the type of objects that may be compared by this comparator
- * @since 8.0
- *
- */
- @FunctionalInterface
- public interface SerializableComparator<T> extends Comparator<T>, Serializable {
-
- /**
- * Returns a {@link SerializableComparator} instance which delegates its
- * logic to the provided {@code comparator}.
- *
- * @param comparator
- * comparator to convert
- * @param <T>
- * the type of objects that may be compared by this comparator
- * @param <C>
- * the comparator type
- * @return a SerializableComparator view of the {@code comparator}
- */
- static <C extends Comparator<T> & Serializable, T> SerializableComparator<T> asInstance(
- C comparator) {
- return (arg1, arg2) -> comparator.compare(arg1, arg2);
- }
- }
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