<?php

namespace Doctrine\DBAL\Driver\PDOPgSql;

use Doctrine\DBAL\Platforms;

/**

 * Driver that connects through pdo_pgsql.

 *

 * @since 2.0

 */

class Driver implements \Doctrine\DBAL\Driver

{

    /**

     * Attempts to connect to the database and returns a driver connection on success.

     *

     * @return Doctrine\DBAL\Driver\Connection

     */

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

    {

        return new \Doctrine\DBAL\Driver\PDOConnection(

            $this->_constructPdoDsn($params),

            $username,

            $password,

            $driverOptions

        );

    }

    /**

     * Constructs the Postgres PDO DSN.

     *

     * @return string The DSN.

     */

    private function _constructPdoDsn(array $params)

    {

        $dsn = 'pgsql:';

        if (isset($params['host']) && $params['host'] != '') {

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

        }

        if (isset($params['port']) && $params['port'] != '') {

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

        }

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

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

        }

        return $dsn;

    }

    public function getDatabasePlatform()

    {

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

    }

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

    {

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

    }

    public function getName()

    {

        return 'pdo_pgsql';

    }

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

    {

        $params = $conn->getParams();

        return $params['dbname'];

    }

}