Doctrine\DBAL\Driver\AbstractMySQLDriver

Complexity

Total Complexity

70

Size/Duplication

Total Lines	200
Duplicated Lines	0 %

Test Coverage

Coverage

97.27%

Importance

Changes

0

7 Methods

Rating	Name	Duplication	Size	Complexity
D	convertException()	0	77	53
B	createDatabasePlatformForVersion()	0	23	7
A	getOracleMysqlVersionNumber()	0	21	5
A	getSchemaManager()	0	3	1
A	getMariaDbMysqlVersionNumber()	0	14	2
A	getDatabasePlatform()	0	3	1
A	getDatabase()	0	5	1

<?php

declare(strict_types=1);

namespace Doctrine\DBAL\Driver;

use Doctrine\DBAL\Connection;

This use statement conflicts with another class in this namespace, Doctrine\DBAL\Driver\Connection. Consider defining an alias.

use Doctrine\DBAL\DBALException;
use Doctrine\DBAL\Driver;
use Doctrine\DBAL\Exception;
use Doctrine\DBAL\Platforms\MariaDb1027Platform;
use Doctrine\DBAL\Platforms\MariaDb1043Platform;
use Doctrine\DBAL\Platforms\MySQL57Platform;
use Doctrine\DBAL\Platforms\MySQL80Platform;
use Doctrine\DBAL\Platforms\MySqlPlatform;
use Doctrine\DBAL\Schema\MySqlSchemaManager;
use Doctrine\DBAL\VersionAwarePlatformDriver;
use function preg_match;
use function stripos;
use function version_compare;

/**
 * Abstract base implementation of the {@link Doctrine\DBAL\Driver} interface for MySQL based drivers.
 */
abstract class AbstractMySQLDriver implements Driver, ExceptionConverterDriver, VersionAwarePlatformDriver
{
    /**
     * {@inheritdoc}
     *
     * @link http://dev.mysql.com/doc/refman/5.7/en/error-messages-client.html
     * @link http://dev.mysql.com/doc/refman/5.7/en/error-messages-server.html
     */
    public function convertException($message, DriverException $exception)
    {
        switch ($exception->getCode()) {
            case 1213:
                return new Exception\DeadlockException($message, $exception);
            case 1205:
                return new Exception\LockWaitTimeoutException($message, $exception);
            case 1050:
                return new Exception\TableExistsException($message, $exception);

            case 1051:
            case 1146:
                return new Exception\TableNotFoundException($message, $exception);

            case 1216:
            case 1217:
            case 1451:
            case 1452:
            case 1701:
                return new Exception\ForeignKeyConstraintViolationException($message, $exception);

            case 1062:
            case 1557:
            case 1569:
            case 1586:
                return new Exception\UniqueConstraintViolationException($message, $exception);

            case 1054:
            case 1166:
            case 1611:
                return new Exception\InvalidFieldNameException($message, $exception);

            case 1052:
            case 1060:
            case 1110:
                return new Exception\NonUniqueFieldNameException($message, $exception);

            case 1064:
            case 1149:
            case 1287:
            case 1341:
            case 1342:
            case 1343:
            case 1344:
            case 1382:
            case 1479:
            case 1541:
            case 1554:
            case 1626:
                return new Exception\SyntaxErrorException($message, $exception);

            case 1044:
            case 1045:
            case 1046:
            case 1049:
            case 1095:
            case 1142:
            case 1143:
            case 1227:
            case 1370:
            case 1429:
            case 2002:
            case 2005:
                return new Exception\ConnectionException($message, $exception);

            case 1048:
            case 1121:
            case 1138:
            case 1171:
            case 1252:
            case 1263:
            case 1364:
            case 1566:
                return new Exception\NotNullConstraintViolationException($message, $exception);
        }

        return new Exception\DriverException($message, $exception);
    }

    /**
     * {@inheritdoc}
     *
     * @throws DBALException
     */
    public function createDatabasePlatformForVersion($version)
    {
        $mariadb = stripos($version, 'mariadb') !== false;
        if ($mariadb) {
            if (version_compare($this->getMariaDbMysqlVersionNumber($version), '10.4.3', '>=')) {
                return new MariaDb1043Platform();
            }
            if (version_compare($this->getMariaDbMysqlVersionNumber($version), '10.2.7', '>=')) {
                return new MariaDb1027Platform();
            }
        }

        if (! $mariadb) {
            $oracleMysqlVersion = $this->getOracleMysqlVersionNumber($version);
            if (version_compare($oracleMysqlVersion, '8', '>=')) {
                return new MySQL80Platform();
            }
            if (version_compare($oracleMysqlVersion, '5.7.9', '>=')) {
                return new MySQL57Platform();
            }
        }

        return $this->getDatabasePlatform();
    }

    /**
     * Get a normalized 'version number' from the server string
     * returned by Oracle MySQL servers.
     *
     * @param string $versionString Version string returned by the driver, i.e. '5.7.10'
     *
     * @throws DBALException
     */
    private function getOracleMysqlVersionNumber(string $versionString) : string
    {
        if (! preg_match(
            '/^(?P<major>\d+)(?:\.(?P<minor>\d+)(?:\.(?P<patch>\d+))?)?/',
            $versionString,
            $versionParts
        )) {
            throw DBALException::invalidPlatformVersionSpecified(
                $versionString,
                '<major_version>.<minor_version>.<patch_version>'
            );
        }
        $majorVersion = $versionParts['major'];
        $minorVersion = $versionParts['minor'] ?? 0;
        $patchVersion = $versionParts['patch'] ?? null;

        if ($majorVersion === '5' && $minorVersion === '7' && $patchVersion === null) {
            $patchVersion = '9';
        }

        return $majorVersion . '.' . $minorVersion . '.' . $patchVersion;
    }

    /**
     * Detect MariaDB server version, including hack for some mariadb distributions
     * that starts with the prefix '5.5.5-'
     *
     * @param string $versionString Version string as returned by mariadb server, i.e. '5.5.5-Mariadb-10.0.8-xenial'
     *
     * @throws DBALException
     */
    private function getMariaDbMysqlVersionNumber(string $versionString) : string
    {
        if (! preg_match(
            '/^(?:5\.5\.5-)?(mariadb-)?(?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)/i',
            $versionString,
            $versionParts
        )) {
            throw DBALException::invalidPlatformVersionSpecified(
                $versionString,
                '^(?:5\.5\.5-)?(mariadb-)?<major_version>.<minor_version>.<patch_version>'
            );
        }

        return $versionParts['major'] . '.' . $versionParts['minor'] . '.' . $versionParts['patch'];
    }

    /**
     * {@inheritdoc}
     */
    public function getDatabase(Connection $conn)
    {
        $params = $conn->getParams();

        return $params['dbname'] ?? $conn->query('SELECT DATABASE()')->fetchColumn();

The expression return $params['dbname'] ?? $conn->query('SELECT DATABASE()')->fetchColumn() also could return the type false which is incompatible with the return type mandated by Doctrine\DBAL\Driver::getDatabase() of string.

    }

    /**
     * {@inheritdoc}
     *
     * @return MySqlPlatform
     */
    public function getDatabasePlatform()
    {
        return new MySqlPlatform();
    }

    /**
     * {@inheritdoc}
     *
     * @return MySqlSchemaManager
     */
    public function getSchemaManager(Connection $conn)
    {
        return new MySqlSchemaManager($conn);
    }
}