Failed Conditions
Pull Request — develop (#3518)
by Michael
29:00 queued 25:29
created

AbstractMySQLDriver::convertException()   D

Complexity

Conditions 53
Paths 53

Size

Total Lines 77
Code Lines 65

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 14
CRAP Score 1426.9313

Importance

Changes 0
Metric Value
eloc 65
dl 0
loc 77
ccs 14
cts 66
cp 0.2121
rs 4.1666
c 0
b 0
f 0
cc 53
nc 53
nop 2
crap 1426.9313

How to fix   Long Method    Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

1
<?php
2
3
declare(strict_types=1);
4
5
namespace Doctrine\DBAL\Driver;
6
7
use Doctrine\DBAL\Connection;
0 ignored issues
show
Bug introduced by
This use statement conflicts with another class in this namespace, Doctrine\DBAL\Driver\Connection. Consider defining an alias.

Let?s assume that you have a directory layout like this:

.
|-- OtherDir
|   |-- Bar.php
|   `-- Foo.php
`-- SomeDir
    `-- Foo.php

and let?s assume the following content of Bar.php:

// Bar.php
namespace OtherDir;

use SomeDir\Foo; // This now conflicts the class OtherDir\Foo

If both files OtherDir/Foo.php and SomeDir/Foo.php are loaded in the same runtime, you will see a PHP error such as the following:

PHP Fatal error:  Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php

However, as OtherDir/Foo.php does not necessarily have to be loaded and the error is only triggered if it is loaded before OtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias:

// Bar.php
namespace OtherDir;

use SomeDir\Foo as SomeDirFoo; // There is no conflict anymore.
Loading history...
8
use Doctrine\DBAL\DBALException;
9
use Doctrine\DBAL\Driver;
10
use Doctrine\DBAL\Exception;
11
use Doctrine\DBAL\Platforms\MariaDb1027Platform;
12
use Doctrine\DBAL\Platforms\MySQL57Platform;
13
use Doctrine\DBAL\Platforms\MySQL80Platform;
14
use Doctrine\DBAL\Platforms\MySqlPlatform;
15
use Doctrine\DBAL\Schema\MySqlSchemaManager;
16
use Doctrine\DBAL\VersionAwarePlatformDriver;
17
use function preg_match;
18
use function stripos;
19
use function version_compare;
20
21
/**
22
 * Abstract base implementation of the {@link Doctrine\DBAL\Driver} interface for MySQL based drivers.
23
 */
24
abstract class AbstractMySQLDriver implements Driver, ExceptionConverterDriver, VersionAwarePlatformDriver
25
{
26
    /**
27
     * {@inheritdoc}
28
     *
29
     * @link http://dev.mysql.com/doc/refman/5.7/en/error-messages-client.html
30
     * @link http://dev.mysql.com/doc/refman/5.7/en/error-messages-server.html
31
     */
32 2292
    public function convertException($message, DriverException $exception)
33
    {
34 2292
        switch ($exception->getCode()) {
35
            case 1213:
36 2292
                return new Exception\DeadlockException($message, $exception);
37
            case 1205:
38 2292
                return new Exception\LockWaitTimeoutException($message, $exception);
39
            case 1050:
40 2292
                return new Exception\TableExistsException($message, $exception);
41
42
            case 1051:
43
            case 1146:
44 2292
                return new Exception\TableNotFoundException($message, $exception);
45
46
            case 1216:
47
            case 1217:
48
            case 1451:
49
            case 1452:
50
            case 1701:
51 2292
                return new Exception\ForeignKeyConstraintViolationException($message, $exception);
52
53
            case 1062:
54
            case 1557:
55
            case 1569:
56
            case 1586:
57 2292
                return new Exception\UniqueConstraintViolationException($message, $exception);
58
59
            case 1054:
60
            case 1166:
61
            case 1611:
62 2292
                return new Exception\InvalidFieldNameException($message, $exception);
63
64
            case 1052:
65
            case 1060:
66
            case 1110:
67 2292
                return new Exception\NonUniqueFieldNameException($message, $exception);
68
69
            case 1064:
70
            case 1149:
71
            case 1287:
72
            case 1341:
73
            case 1342:
74
            case 1343:
75
            case 1344:
76
            case 1382:
77
            case 1479:
78
            case 1541:
79
            case 1554:
80
            case 1626:
81 2292
                return new Exception\SyntaxErrorException($message, $exception);
82
83
            case 1044:
84
            case 1045:
85
            case 1046:
86
            case 1049:
87
            case 1095:
88
            case 1142:
89
            case 1143:
90
            case 1227:
91
            case 1370:
92
            case 1429:
93
            case 2002:
94
            case 2005:
95 2292
                return new Exception\ConnectionException($message, $exception);
96
97
            case 1048:
98
            case 1121:
99
            case 1138:
100
            case 1171:
101
            case 1252:
102
            case 1263:
103
            case 1364:
104
            case 1566:
105 2292
                return new Exception\NotNullConstraintViolationException($message, $exception);
106
        }
107
108 2292
        return new Exception\DriverException($message, $exception);
109
    }
110
111
    /**
112
     * {@inheritdoc}
113
     *
114
     * @throws DBALException
115
     */
116 2266
    public function createDatabasePlatformForVersion($version)
117
    {
118 2266
        $mariadb = stripos($version, 'mariadb') !== false;
119 2266
        if ($mariadb && version_compare($this->getMariaDbMysqlVersionNumber($version), '10.2.7', '>=')) {
120 2266
            return new MariaDb1027Platform();
121
        }
122
123 2266
        if (! $mariadb) {
124 2266
            $oracleMysqlVersion = $this->getOracleMysqlVersionNumber($version);
125 2266
            if (version_compare($oracleMysqlVersion, '8', '>=')) {
126 2266
                return new MySQL80Platform();
127
            }
128 2266
            if (version_compare($oracleMysqlVersion, '5.7.9', '>=')) {
129 2266
                return new MySQL57Platform();
130
            }
131
        }
132
133 2266
        return $this->getDatabasePlatform();
134
    }
135
136
    /**
137
     * Get a normalized 'version number' from the server string
138
     * returned by Oracle MySQL servers.
139
     *
140
     * @param string $versionString Version string returned by the driver, i.e. '5.7.10'
141
     *
142
     * @throws DBALException
143
     */
144 2266
    private function getOracleMysqlVersionNumber(string $versionString) : string
145
    {
146 2266
        if (! preg_match(
147
            '/^(?P<major>\d+)(?:\.(?P<minor>\d+)(?:\.(?P<patch>\d+))?)?/',
148 2266
            $versionString,
149 2266
            $versionParts
150
        )) {
151 2240
            throw DBALException::invalidPlatformVersionSpecified(
152
                $versionString,
153 2240
                '<major_version>.<minor_version>.<patch_version>'
154
            );
155
        }
156 2266
        $majorVersion = $versionParts['major'];
157 2266
        $minorVersion = $versionParts['minor'] ?? 0;
158 2266
        $patchVersion = $versionParts['patch'] ?? null;
159
160 2266
        if ($majorVersion === '5' && $minorVersion === '7' && $patchVersion === null) {
161 2266
            $patchVersion = '9';
162
        }
163
164 2266
        return $majorVersion . '.' . $minorVersion . '.' . $patchVersion;
165
    }
166
167
    /**
168
     * Detect MariaDB server version, including hack for some mariadb distributions
169
     * that starts with the prefix '5.5.5-'
170
     *
171
     * @param string $versionString Version string as returned by mariadb server, i.e. '5.5.5-Mariadb-10.0.8-xenial'
172
     *
173
     * @throws DBALException
174
     */
175 2266
    private function getMariaDbMysqlVersionNumber(string $versionString) : string
176
    {
177 2266
        if (! preg_match(
178
            '/^(?:5\.5\.5-)?(mariadb-)?(?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)/i',
179 2266
            $versionString,
180 2266
            $versionParts
181
        )) {
182
            throw DBALException::invalidPlatformVersionSpecified(
183
                $versionString,
184
                '^(?:5\.5\.5-)?(mariadb-)?<major_version>.<minor_version>.<patch_version>'
185
            );
186
        }
187
188 2266
        return $versionParts['major'] . '.' . $versionParts['minor'] . '.' . $versionParts['patch'];
189
    }
190
191
    /**
192
     * {@inheritdoc}
193
     */
194 2318
    public function getDatabase(Connection $conn)
195
    {
196 2318
        $params = $conn->getParams();
197
198 2318
        return $params['dbname'] ?? $conn->query('SELECT DATABASE()')->fetchColumn();
0 ignored issues
show
Bug Best Practice introduced by
The expression return $params['dbname']...BASE()')->fetchColumn() also could return the type false which is incompatible with the return type mandated by Doctrine\DBAL\Driver::getDatabase() of string.
Loading history...
199
    }
200
201
    /**
202
     * {@inheritdoc}
203
     *
204
     * @return MySqlPlatform
205
     */
206 2266
    public function getDatabasePlatform()
207
    {
208 2266
        return new MySqlPlatform();
209
    }
210
211
    /**
212
     * {@inheritdoc}
213
     *
214
     * @return MySqlSchemaManager
215
     */
216 2188
    public function getSchemaManager(Connection $conn)
217
    {
218 2188
        return new MySqlSchemaManager($conn);
219
    }
220
}
221