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 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
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package org.apache.james.mailbox.store.search.comparator;

import java.util.Comparator;

import org.apache.james.mailbox.store.mail.model.MailboxMessage;
import org.apache.james.mailbox.store.search.SearchUtil;

public class BaseSubjectComparator extends AbstractHeaderComparator {

    public static final Comparator<MailboxMessage> BASESUBJECT = new BaseSubjectComparator();
    private static final String SUBJECT = "subject";
    
    @Override
    public int compare(MailboxMessage o1, MailboxMessage o2) {
        String baseSubject1 = SearchUtil.getBaseSubject(getHeaderValue(SUBJECT, o1));
        String baseSubject2 = SearchUtil.getBaseSubject(getHeaderValue(SUBJECT, o2));

        return baseSubject1.compareToIgnoreCase(baseSubject2);
    }
}
