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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2017-2020 Payara Foundation and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://github.com/payara/Payara/blob/main/LICENSE.txt
 * See the License for the specific
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 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 * exception as provided by the Payara Foundation in the GPL Version 2 section of the License
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 * Modifications:
 * If applicable, add the following below the License Header, with the fields
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package fish.payara.nucleus.microprofile.config.spi;

import java.util.Comparator;

import org.eclipse.microprofile.config.spi.ConfigSource;

/**
 *
 * @author Steve Millidge (Payara Foundation)
 */
public class ConfigSourceComparator implements Comparator{

    @Override
    public int compare(ConfigSource o1, ConfigSource o2) {
        int res = -1*(o1.getOrdinal() - o2.getOrdinal());
        if (res != 0)
            return res;
        return Comparator.nullsLast(String::compareTo).compare(o1.getName(), o2.getName());
    }

}