<?php

/*

 *  $Id$

 *

 * 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\DBAL\Driver\PDOIbm;

use Doctrine\DBAL\Connection;

/**

 * Driver for the PDO IBM extension

 *

 * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL

 * @link        www.doctrine-project.com

 * @since       1.0

 * @version     $Revision$

 * @author      Benjamin Eberlei <kontakt@beberlei.de>

 * @author      Guilherme Blanco <guilhermeblanco@hotmail.com>

 * @author      Jonathan Wage <jonwage@gmail.com>

 * @author      Roman Borschel <roman@code-factory.org>

 */

class Driver implements \Doctrine\DBAL\Driver

{

    /**

     * Attempts to establish a connection with the underlying driver.

     *

     * @param array $params

     * @param string $username

     * @param string $password

     * @param array $driverOptions

     * @return Doctrine\DBAL\Driver\Connection

     */

    public function connect(array $params, $username = null, $password = null, array $driverOptions = array())

    {

        $conn = new \Doctrine\DBAL\Driver\PDOConnection(

            $this->_constructPdoDsn($params),

            $username,

            $password,

            $driverOptions

        );

        return $conn;

    }

    /**

     * Constructs the MySql PDO DSN.

     *

     * @return string  The DSN.

     */

    private function _constructPdoDsn(array $params)

    {

        $dsn = 'ibm:';

        if (isset($params['host'])) {

            $dsn .= 'HOSTNAME=' . $params['host'] . ';';

        }

        if (isset($params['port'])) {

            $dsn .= 'PORT=' . $params['port'] . ';';

        }

        $dsn .= 'PROTOCOL=TCPIP;';

        if (isset($params['dbname'])) {

            $dsn .= 'DATABASE=' . $params['dbname'] . ';';

        }

        return $dsn;

    }

    /**

     * 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()

    {

        return new \Doctrine\DBAL\Platforms\DB2Platform;

    }

    /**

     * 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\SchemaManager

     */

    public function getSchemaManager(Connection $conn)

    {

        return new \Doctrine\DBAL\Schema\DB2SchemaManager($conn);

    }

    /**

     * Gets the name of the driver.

     *

     * @return string The name of the driver.

     */

    public function getName()

    {

        return 'pdo_ibm';

    }

    /**

     * Get the name of the database connected to for this driver.

     *

     * @param  Doctrine\DBAL\Connection $conn

     * @return string $database

     */

    public function getDatabase(\Doctrine\DBAL\Connection $conn)

    {

        $params = $conn->getParams();

        return $params['dbname'];

    }

}