<?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 LGPL. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\ORM\Internal\Hydration;

use Doctrine\DBAL\Connection;

/**
 * Hydrator that produces flat, rectangular results of scalar data.
 * The created result is almost the same as a regular SQL result set, except
 * that column names are mapped to field names and data type conversions take place.
 *
 * @since  2.0
 * @author Roman Borschel <roman@code-factory.org>
 * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
 */
class ScalarHydrator extends AbstractHydrator
{
    /**
     * {@inheritdoc}
     */
    protected function hydrateAllData()
    {
        $result = array();
        $cache  = array();

        while ($data = $this->_stmt->fetch(\PDO::FETCH_ASSOC)) {
            $this->hydrateRowData($data, $cache, $result);
        }

        return $result;
    }

    /**
     * {@inheritdoc}
     */
    protected function hydrateRowData(array $data, array &$cache, array &$result)
    {
        $result[] = $this->gatherScalarRowData($data, $cache);
    }
}