vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOSqlite/Driver.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\PDOSqlite;

use Doctrine\DBAL\DBALException;
use Doctrine\DBAL\Driver\AbstractSQLiteDriver;
use Doctrine\DBAL\Driver\PDOConnection;
use PDOException;

/**
 * The PDO Sqlite driver.
 *
 * @since 2.0
 */
class Driver extends AbstractSQLiteDriver
{
    /**
     * @var array
     */
    protected $_userDefinedFunctions = array(
        'sqrt' => array('callback' => array('Doctrine\DBAL\Platforms\SqlitePlatform', 'udfSqrt'), 'numArgs' => 1),
        'mod'  => array('callback' => array('Doctrine\DBAL\Platforms\SqlitePlatform', 'udfMod'), 'numArgs' => 2),
        'locate'  => array('callback' => array('Doctrine\DBAL\Platforms\SqlitePlatform', 'udfLocate'), 'numArgs' => -1),
    );

    /**
     * {@inheritdoc}
     */
    public function connect(array $params, $username = null, $password = null, array $driverOptions = array())
    {
        if (isset($driverOptions['userDefinedFunctions'])) {
            $this->_userDefinedFunctions = array_merge(
                $this->_userDefinedFunctions, $driverOptions['userDefinedFunctions']);
            unset($driverOptions['userDefinedFunctions']);
        }

        try {
            $pdo = new PDOConnection(
                $this->_constructPdoDsn($params),
                $username,
                $password,
                $driverOptions
            );