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<?php |
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declare(strict_types=1); |
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namespace Doctrine\Migrations\Generator; |
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use Doctrine\DBAL\Configuration as DBALConfiguration; |
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use Doctrine\DBAL\Platforms\AbstractPlatform; |
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use Doctrine\DBAL\Schema\AbstractSchemaManager; |
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use Doctrine\DBAL\Schema\Schema; |
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use Doctrine\Migrations\Generator\Exception\NoChangesDetected; |
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use Doctrine\Migrations\Provider\SchemaProviderInterface; |
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use function preg_match; |
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use function strpos; |
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use function substr; |
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/** |
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* The DiffGenerator class is responsible for comparing two Doctrine\DBAL\Schema\Schema instances and generating a |
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* migration class with the SQL statements needed to migrate from one schema to the other. |
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* |
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* @internal |
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*/ |
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class DiffGenerator |
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{ |
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/** @var DBALConfiguration */ |
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private $dbalConfiguration; |
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/** @var AbstractSchemaManager */ |
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private $schemaManager; |
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/** @var SchemaProviderInterface */ |
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private $schemaProvider; |
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/** @var AbstractPlatform */ |
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private $platform; |
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/** @var Generator */ |
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private $migrationGenerator; |
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/** @var SqlGenerator */ |
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private $migrationSqlGenerator; |
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public function __construct( |
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DBALConfiguration $dbalConfiguration, |
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AbstractSchemaManager $schemaManager, |
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SchemaProviderInterface $schemaProvider, |
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AbstractPlatform $platform, |
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Generator $migrationGenerator, |
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SqlGenerator $migrationSqlGenerator |
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) { |
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$this->dbalConfiguration = $dbalConfiguration; |
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$this->schemaManager = $schemaManager; |
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$this->schemaProvider = $schemaProvider; |
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$this->platform = $platform; |
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$this->migrationGenerator = $migrationGenerator; |
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$this->migrationSqlGenerator = $migrationSqlGenerator; |
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} |
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/** |
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* @throws NoChangesDetected |
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*/ |
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public function generate( |
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string $versionNumber, |
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?string $filterExpression, |
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bool $formatted = false, |
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int $lineLength = 120, |
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bool $checkDbPlatform = true |
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) : string { |
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if ($filterExpression !== null) { |
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$this->dbalConfiguration->setFilterSchemaAssetsExpression($filterExpression); |
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} |
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$fromSchema = $this->createFromSchema(); |
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$toSchema = $this->createToSchema(); |
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$up = $this->migrationSqlGenerator->generate( |
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$fromSchema->getMigrateToSql($toSchema, $this->platform), |
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$formatted, |
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$lineLength, |
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$checkDbPlatform |
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); |
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$down = $this->migrationSqlGenerator->generate( |
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$fromSchema->getMigrateFromSql($toSchema, $this->platform), |
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$formatted, |
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$lineLength, |
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$checkDbPlatform |
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); |
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if ($up === '' && $down === '') { |
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throw NoChangesDetected::new(); |
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} |
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return $this->migrationGenerator->generateMigration( |
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$versionNumber, |
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$up, |
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$down |
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); |
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} |
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private function createFromSchema() : Schema |
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{ |
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return $this->schemaManager->createSchema(); |
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} |
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private function createToSchema() : Schema |
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{ |
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$toSchema = $this->schemaProvider->createSchema(); |
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$filterExpression = $this->dbalConfiguration->getFilterSchemaAssetsExpression(); |
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if ($filterExpression !== null) { |
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foreach ($toSchema->getTables() as $table) { |
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$tableName = $table->getName(); |
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if (preg_match($filterExpression, $this->resolveTableName($tableName)) === 1) { |
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continue; |
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} |
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$toSchema->dropTable($tableName); |
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} |
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} |
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return $toSchema; |
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} |
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/** |
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* Resolve a table name from its fully qualified name. The `$name` argument |
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* comes from Doctrine\DBAL\Schema\Table#getName which can sometimes return |
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* a namespaced name with the form `{namespace}.{tableName}`. This extracts |
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* the table name from that. |
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*/ |
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private function resolveTableName(string $name) : string |
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{ |
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$pos = strpos($name, '.'); |
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return $pos === false ? $name : substr($name, $pos + 1); |
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} |
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} |
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doctrine /
migrations
