# AbstractPublicationComparator.java

    /*
     * Copyright (C) 2000 - 2024 Silverpeas
     *
     * This program is free software: you can redistribute it and/or modify
     * it under the terms of the GNU Affero General Public License as
     * published by the Free Software Foundation, either version 3 of the
     * License, or (at your option) any later version.
     *
     * As a special exception to the terms and conditions of version 3.0 of
     * the GPL, you may redistribute this Program in connection with Free/Libre
     * Open Source Software ("FLOSS") applications as described in Silverpeas's
     * FLOSS exception.  You should have received a copy of the text describing
     * the FLOSS exception, and it is also available here:
     * "http://www.silverpeas.org/docs/core/legal/floss_exception.html"
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU Affero General Public License for more details.
     *
     * You should have received a copy of the GNU Affero General Public License
     * along with this program.  If not, see <https://www.gnu.org/licenses/>.
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    package org.silverpeas.components.kmelia.model;

    import org.silverpeas.core.util.comparator.AbstractComplexComparator;

    /**
     * Each implementation setups the values on which the comparator MUST compare.
     * In any case the comparison on identifier of publication is then added.
     */
    public abstract class AbstractPublicationComparator
        extends AbstractComplexComparator<KmeliaPublication> {
      private static final long serialVersionUID = -2378713314388688417L;

      private final boolean asc;

      public AbstractPublicationComparator(final boolean asc) {
        super();
        this.asc = asc;
      }

      @Override
      protected ValueBuffer getValuesToCompare(
          final KmeliaPublication publication) {
        final ValueBuffer valueBuffer = new ValueBuffer();
        setupWith(publication, asc, valueBuffer);
        return valueBuffer.append(publication.getDetail().getId());
      }

      abstract void setupWith(final KmeliaPublication publication, final boolean asc,
          final ValueBuffer valueBuffer);
    }