vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/OCI8/OCI8Statement.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\OCI8;

use PDO;
use IteratorAggregate;
use Doctrine\DBAL\Driver\Statement;

/**
 * The OCI8 implementation of the Statement interface.
 *
 * @since 2.0
 * @author Roman Borschel <roman@code-factory.org>
 */
class OCI8Statement implements \IteratorAggregate, Statement
{
    /**
     * @var resource
     */
    protected $_dbh;

    /**
     * @var resource
     */
    protected $_sth;

    /**
     * @var \Doctrine\DBAL\Driver\OCI8\OCI8Connection
     */
    protected $_conn;

    /**
     * @var string
     */
    protected static $_PARAM = ':param';

    /**
     * @var array
     */
    protected static $fetchModeMap = array(
        PDO::FETCH_BOTH => OCI_BOTH,
        PDO::FETCH_ASSOC => OCI_ASSOC,
        PDO::FETCH_NUM => OCI_NUM,