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| 1 | <?php |
| 2 | |
| 3 | namespace Wikimedia\Rdbms; |
| 4 | |
| 5 | use Doctrine\DBAL\Platforms\AbstractPlatform; |
| 6 | use Doctrine\DBAL\Schema\Comparator; |
| 7 | use Doctrine\DBAL\Schema\Schema; |
| 8 | |
| 9 | /** |
| 10 | * @experimental |
| 11 | * @unstable |
| 12 | */ |
| 13 | class DoctrineSchemaChangeBuilder implements SchemaChangeBuilder { |
| 14 | use DoctrineAbstractSchemaTrait; |
| 15 | |
| 16 | private $platform; |
| 17 | |
| 18 | /** |
| 19 | * A builder object that take abstract schema definition and produces sql to create the tables. |
| 20 | * |
| 21 | * @param AbstractPlatform $platform A Doctrine Platform object, Can be Mysql, Sqlite, etc. |
| 22 | */ |
| 23 | public function __construct( AbstractPlatform $platform ) { |
| 24 | $this->platform = $platform; |
| 25 | } |
| 26 | |
| 27 | private function getTableSchema( array $tableSpec ): Schema { |
| 28 | if ( !$tableSpec ) { |
| 29 | // Used for not yet created tables. |
| 30 | return new Schema(); |
| 31 | } |
| 32 | return $this->addTableToSchema( new Schema(), $tableSpec ); |
| 33 | } |
| 34 | |
| 35 | public function getSchemaChangeSql( array $schemaChangeSpec ): array { |
| 36 | $comparator = new Comparator(); |
| 37 | $schemaDiff = $comparator->compare( |
| 38 | $this->getTableSchema( $schemaChangeSpec['before'] ), |
| 39 | $this->getTableSchema( $schemaChangeSpec['after'] ) |
| 40 | ); |
| 41 | return $schemaDiff->toSql( $this->platform ); |
| 42 | } |
| 43 | } |