1 | <?php |
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2 | |||
3 | declare(strict_types=1); |
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4 | |||
5 | namespace Doctrine\DBAL\Driver; |
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6 | |||
7 | use Doctrine\DBAL\Connection; |
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8 | use Doctrine\DBAL\Driver\DriverException as DriverExceptionInterface; |
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9 | use Doctrine\DBAL\Exception; |
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10 | use Doctrine\DBAL\Exception\DriverException; |
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This use statement conflicts with another class in this namespace,
Doctrine\DBAL\Driver\DriverException . 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
namespace OtherDir;
use SomeDir\Foo; // This now conflicts the class OtherDir\Foo
If both files PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as // Bar.php
namespace OtherDir;
use SomeDir\Foo as SomeDirFoo; // There is no conflict anymore.
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11 | use Doctrine\DBAL\Platforms\AbstractPlatform; |
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12 | use Doctrine\DBAL\Platforms\Exception\InvalidPlatformVersion; |
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13 | use Doctrine\DBAL\Platforms\SQLAnywhere16Platform; |
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14 | use Doctrine\DBAL\Schema\AbstractSchemaManager; |
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15 | use Doctrine\DBAL\Schema\SQLAnywhereSchemaManager; |
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16 | use Doctrine\DBAL\VersionAwarePlatformDriver; |
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17 | use function preg_match; |
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18 | |||
19 | /** |
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20 | * Abstract base implementation of the {@link Doctrine\DBAL\Driver} interface for SAP Sybase SQL Anywhere based drivers. |
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21 | */ |
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22 | abstract class AbstractSQLAnywhereDriver implements ExceptionConverterDriver, VersionAwarePlatformDriver |
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23 | { |
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24 | /** |
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25 | * {@inheritdoc} |
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26 | * |
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27 | * @link http://dcx.sybase.com/index.html#sa160/en/saerrors/sqlerror.html |
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28 | */ |
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29 | 462 | public function convertException(string $message, DriverExceptionInterface $exception) : DriverException |
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30 | { |
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31 | 462 | switch ($exception->getCode()) { |
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32 | case -306: |
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33 | case -307: |
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34 | case -684: |
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35 | 66 | return new Exception\DeadlockException($message, $exception); |
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36 | |||
37 | case -210: |
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38 | case -1175: |
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39 | case -1281: |
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40 | 66 | return new Exception\LockWaitTimeoutException($message, $exception); |
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41 | |||
42 | case -100: |
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43 | case -103: |
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44 | case -832: |
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45 | 66 | return new Exception\ConnectionException($message, $exception); |
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46 | |||
47 | case -143: |
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48 | 22 | return new Exception\InvalidFieldNameException($message, $exception); |
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49 | |||
50 | case -193: |
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51 | case -196: |
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52 | 44 | return new Exception\UniqueConstraintViolationException($message, $exception); |
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53 | |||
54 | case -194: |
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55 | case -198: |
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56 | 22 | return new Exception\ForeignKeyConstraintViolationException($message, $exception); |
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57 | |||
58 | case -144: |
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59 | 22 | return new Exception\NonUniqueFieldNameException($message, $exception); |
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60 | |||
61 | case -184: |
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62 | case -195: |
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63 | 44 | return new Exception\NotNullConstraintViolationException($message, $exception); |
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64 | |||
65 | case -131: |
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66 | 22 | return new Exception\SyntaxErrorException($message, $exception); |
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67 | |||
68 | case -110: |
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69 | 22 | return new Exception\TableExistsException($message, $exception); |
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70 | |||
71 | case -141: |
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72 | case -1041: |
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73 | 44 | return new Exception\TableNotFoundException($message, $exception); |
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74 | } |
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75 | |||
76 | 22 | return new DriverException($message, $exception); |
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77 | } |
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78 | |||
79 | 44 | public function createDatabasePlatformForVersion(string $version) : AbstractPlatform |
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80 | { |
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81 | 44 | if (preg_match( |
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82 | 2 | '/^(?P<major>\d+)(?:\.(?P<minor>\d+)(?:\.(?P<patch>\d+)(?:\.(?P<build>\d+))?)?)?/', |
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83 | 44 | $version, |
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84 | 44 | $versionParts |
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85 | 44 | ) === 0) { |
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86 | 22 | throw InvalidPlatformVersion::new( |
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87 | 22 | $version, |
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88 | 22 | '<major_version>.<minor_version>.<patch_version>.<build_version>' |
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89 | ); |
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90 | } |
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91 | |||
92 | 22 | return new SQLAnywhere16Platform(); |
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93 | } |
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94 | |||
95 | 22 | public function getDatabasePlatform() : AbstractPlatform |
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96 | { |
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97 | 22 | return new SQLAnywhere16Platform(); |
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98 | } |
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99 | |||
100 | 22 | public function getSchemaManager(Connection $conn) : AbstractSchemaManager |
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101 | { |
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102 | 22 | return new SQLAnywhereSchemaManager($conn); |
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103 | } |
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104 | } |
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105 |
Let?s assume that you have a directory layout like this:
and let?s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/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 beforeOtherDir/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: