vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/ResultStatement.php

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<?php
/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\DBAL\Driver;

/**
 * Interface for the reading part of a prepare statement only.
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 */
interface ResultStatement extends \Traversable
{
    /**
     * Closes the cursor, enabling the statement to be executed again.
     *
     * @return boolean TRUE on success or FALSE on failure.
     */
    public function closeCursor();

    /**
     * Returns the number of columns in the result set
     *
     * @return integer The number of columns in the result set represented
     *                 by the PDOStatement object. If there is no result set,
     *                 this method should return 0.
     */
    public function columnCount();

    /**
     * Sets the fetch mode to use while iterating this statement.
     *
     * @param integer $fetchMode The fetch mode must be one of the PDO::FETCH_* constants.
     * @param mixed   $arg2
     * @param mixed   $arg3
     *
     * @return boolean
     *
     * @see PDO::FETCH_* constants.
     */
    public function setFetchMode($fetchMode, $arg2 = null, $arg3 = null);

    /**
     * Returns the next row of a result set.
     *