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<?php |
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declare(strict_types=1); |
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namespace Doctrine\Migrations\Version; |
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use Doctrine\Migrations\MigrationRepository; |
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use function substr; |
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/** |
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* The AliasResolver class is responsible for resolving aliases like first, current, etc. to the actual version number. |
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* |
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* @internal |
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*/ |
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final class AliasResolver |
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{ |
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private const ALIAS_FIRST = 'first'; |
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private const ALIAS_CURRENT = 'current'; |
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private const ALIAS_PREV = 'prev'; |
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private const ALIAS_NEXT = 'next'; |
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private const ALIAS_LATEST = 'latest'; |
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/** @var MigrationRepository */ |
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private $migrationRepository; |
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public function __construct(MigrationRepository $migrationRepository) |
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{ |
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$this->migrationRepository = $migrationRepository; |
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} |
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/** |
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* Returns the version number from an alias. |
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* |
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* Supported aliases are: |
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* |
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* - first: The very first version before any migrations have been run. |
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* - current: The current version. |
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* - prev: The version prior to the current version. |
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* - next: The version following the current version. |
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* - latest: The latest available version. |
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* |
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* If an existing version number is specified, it is returned verbatimly. |
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*/ |
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public function resolveVersionAlias(string $alias) : ?string |
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{ |
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if ($this->migrationRepository->hasVersion($alias)) { |
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return $alias; |
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} |
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switch ($alias) { |
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case self::ALIAS_FIRST: |
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return '0'; |
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case self::ALIAS_CURRENT: |
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return $this->migrationRepository->getCurrentVersion(); |
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case self::ALIAS_PREV: |
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return $this->migrationRepository->getPrevVersion(); |
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case self::ALIAS_NEXT: |
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return $this->migrationRepository->getNextVersion(); |
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case self::ALIAS_LATEST: |
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return $this->migrationRepository->getLatestVersion(); |
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default: |
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if (substr($alias, 0, 7) === self::ALIAS_CURRENT) { |
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1 |
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return $this->migrationRepository->getDeltaVersion(substr($alias, 7)); |
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} |
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return null; |
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} |
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} |
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} |
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doctrine /
migrations
