vendor/doctrine/dbal/lib/Doctrine/DBAL/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 interface.
 * Interface that all DBAL drivers must implement.
 *
 * @since 2.0
 */
interface Driver
{
    /**
     * Attempts to create a connection with the database.
     *
     * @param array       $params        All connection parameters passed by the user.
     * @param string|null $username      The username to use when connecting.
     * @param string|null $password      The password to use when connecting.
     * @param array       $driverOptions The driver options to use when connecting.
     *
     * @return \Doctrine\DBAL\Driver\Connection The database connection.
     */
    public function connect(array $params, $username = null, $password = null, array $driverOptions = array());

    /**
     * Gets the DatabasePlatform instance that provides all the metadata about
     * the platform this driver connects to.
     *
     * @return \Doctrine\DBAL\Platforms\AbstractPlatform The database platform.
     */
    public function getDatabasePlatform();

    /**
     * Gets the SchemaManager that can be used to inspect and change the underlying
     * database schema of the platform this driver connects to.
     *
     * @param \Doctrine\DBAL\Connection $conn
     *
     * @return \Doctrine\DBAL\Schema\AbstractSchemaManager
     */
    public function getSchemaManager(Connection $conn);

    /**