<?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\OCI8;

use Doctrine\DBAL\Platforms;

/**

 * A Doctrine DBAL driver for the Oracle OCI8 PHP extensions.

 * 

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

 * @since 2.0

 */

class Driver implements \Doctrine\DBAL\Driver

{

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

    {

        return new OCI8Connection(

            $username,

            $password,

            $this->_constructDsn($params),

            isset($params['charset']) ? $params['charset'] : null,

            isset($params['sessionMode']) ? $params['sessionMode'] : OCI_DEFAULT

        );

    }

    /**

     * Constructs the Oracle DSN.

     *

     * @return string The DSN.

     */

    private function _constructDsn(array $params)

    {

        $dsn = '';

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

            $dsn .= '(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)' .

                   '(HOST=' . $params['host'] . ')';

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

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

            } else {

                $dsn .= '(PORT=1521)';

            }

            $dsn .= '))';

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

                $dsn .= '(CONNECT_DATA=(SID=' . $params['dbname'] . ')';

            }

            $dsn .= '))';

        } else {

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

        }

        return $dsn;

    }

    public function getDatabasePlatform()

    {

        return new \Doctrine\DBAL\Platforms\OraclePlatform();

    }

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

    {

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

    }

    public function getName()

    {

        return 'oci8';

    }

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

    {

        $params = $conn->getParams();

        return $params['user'];

    }

}