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<?php
namespace Wikimedia\Rdbms;
use Doctrine\DBAL\Platforms\AbstractPlatform;
use Doctrine\DBAL\Schema\Comparator;
use Doctrine\DBAL\Schema\Schema;
/**
* @experimental
* @unstable
*/
class DoctrineSchemaChangeBuilder implements SchemaChangeBuilder {
use DoctrineAbstractSchemaTrait;
private AbstractPlatform $platform;
/**
* A builder object that take abstract schema definition and produces sql to create the tables.
*
* @param AbstractPlatform $platform A Doctrine Platform object, Can be Mysql, Sqlite, etc.
*/
public function __construct( AbstractPlatform $platform ) {
$this->platform = $platform;
}
private function getTableSchema( array $tableSpec ): Schema {
if ( !$tableSpec ) {
// Used for not yet created tables.
return new Schema();
}
return $this->addTableToSchema( new Schema(), $tableSpec );
}
public function getSchemaChangeSql( array $schemaChangeSpec ): array {
$comparator = new Comparator();
$schemaDiff = $comparator->compare(
$this->getTableSchema( $schemaChangeSpec['before'] ),
$this->getTableSchema( $schemaChangeSpec['after'] )
);
return $schemaDiff->toSql( $this->platform );
}
}
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