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JDBC Type 4 driver for MySQL.
There is a newer version: 9.1.0
/*
 * Copyright (c) 2015, 2024, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 2.0, as published by
 * the Free Software Foundation.
 *
 * This program is designed to work with certain software that is licensed under separate terms, as designated in a particular file or component or in
 * included license documentation. The authors of MySQL hereby grant you an additional permission to link the program and your derivative works with the
 * separately licensed software that they have either included with the program or referenced in the documentation.
 *
 * Without limiting anything contained in the foregoing, this file, which is part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
 * version 1.0, a copy of which can be found at http://oss.oracle.com/licenses/universal-foss-exception.
 *
 * 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 General Public License, version 2.0, for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

package com.mysql.cj.result;

import java.util.Iterator;

import com.mysql.cj.Messages;
import com.mysql.cj.exceptions.CJOperationNotSupportedException;
import com.mysql.cj.exceptions.ExceptionFactory;

/**
 * A list of {@link Row}s.
 */
public interface RowList extends Iterator {

    /**
     * What's returned for the size of a row list when its size can not be
     * determined.
     */
    public static final int RESULT_SET_SIZE_UNKNOWN = -1;

    /**
     * Optionally iterate backwards on the list.
     *
     * @return {@link Row}
     */
    default Row previous() {
        throw ExceptionFactory.createException(CJOperationNotSupportedException.class, Messages.getString("OperationNotSupportedException.0"));
    }

    /**
     * Optionally retrieve Row at index n.
     *
     * Only works on non dynamic row lists.
     *
     * @param n
     *            row number
     * @return {@link Row}
     */
    default Row get(int n) {
        throw ExceptionFactory.createException(CJOperationNotSupportedException.class, Messages.getString("OperationNotSupportedException.0"));
    }

    /**
     * Returns the current position.
     *
     * @return the current row number
     */
    default int getPosition() {
        throw ExceptionFactory.createException(CJOperationNotSupportedException.class, Messages.getString("OperationNotSupportedException.0"));
    }

    /**
     * Only works on non dynamic row lists.
     *
     * @return the size of this row list
     */
    default int size() {
        return RESULT_SET_SIZE_UNKNOWN;
    }

}