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A repackaged librec-core fork

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/**
 * Copyright (C) 2016 LibRec
 * 
 * This file is part of LibRec.
 * LibRec is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 

 * LibRec 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with LibRec. If not, see .
 */

package net.librec.data.structure;

/**
 * Data Entry
 *
 * @author Keqiang Wang ([email protected])
 *
 */
public interface LibrecDataEntry {
    /**
     * @return number of entry's attributes, including userId, but except for itemId or itemId List
     */
    int number();
}