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The Adobe Experience Manager SDK

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/*
 * Copyright (C) 2007 The Guava Authors
 *
 * 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.common.collect;

import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.annotations.GwtCompatible;
import java.io.Serializable;

/**
 *  An ordering that uses the natural order of the values.
 * @deprecated The Google Guava Core Libraries are deprecated and will not be part of the AEM SDK after April 2023
 */
@GwtCompatible(serializable = true)
// TODO(kevinb): the right way to explain this??
@SuppressWarnings("unchecked")
@Deprecated(since = "2022-12-01")
final class NaturalOrdering extends Ordering implements Serializable {

    static final NaturalOrdering INSTANCE = new NaturalOrdering();

    @Override
    public int compare(Comparable left, Comparable right) {
        // for GWT
        checkNotNull(left);
        checkNotNull(right);
        return left.compareTo(right);
    }

    @Override
    public  Ordering reverse() {
        return (Ordering) ReverseNaturalOrdering.INSTANCE;
    }

    // preserving singleton-ness gives equals()/hashCode() for free
    private Object readResolve() {
        return INSTANCE;
    }

    @Override
    public String toString() {
        return "Ordering.natural()";
    }

    private NaturalOrdering() {
    }

    private static final long serialVersionUID = 0;
}