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<?php
declare(strict_types=1);
namespace OCA\News\Migration;
use Closure;
use OCP\DB\ISchemaWrapper;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
use OCP\Migration\IOutput;
use OCP\Migration\SimpleMigrationStep;
/**
* Auto-generated migration step: Please modify to your needs!
*/
class Version150005Date20201009192341 extends SimpleMigrationStep {
protected $connection;
public function __construct(IDBConnection $connection)
{
$this->connection = $connection;
}
/**
* @param IOutput $output
* @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
* @param array $options
*
* @return void
*/
public function preSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
$qb = $this->connection->getQueryBuilder();
$qb->update('news_feeds')
->set('folder_id', $qb->createPositionalParameter(null, IQueryBuilder::PARAM_NULL))
->where('folder_id = 0')
->executeStatement();
$feed_name = $this->connection->getQueryBuilder()->getTableName('news_feeds');
$folder_name = $this->connection->getQueryBuilder()->getTableName('news_folders');
$items_query = "DELETE FROM ${feed_name} WHERE ${feed_name}.`folder_id` NOT IN (SELECT DISTINCT id FROM ${folder_name}) AND ${feed_name}.`folder_id` IS NOT NULL";
$this->connection->executeQuery($items_query);
$item_name = $this->connection->getQueryBuilder()->getTableName('news_items');
$feed_name = $this->connection->getQueryBuilder()->getTableName('news_feeds');
$items_query = "DELETE FROM ${item_name} WHERE ${item_name}.`feed_id` NOT IN (SELECT DISTINCT id FROM ${feed_name})";
$this->connection->executeQuery($items_query);
}
/**
* @param IOutput $output
* @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
* @param array $options
* @return null|ISchemaWrapper
*/
public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
/** @var ISchemaWrapper $schema */
$schema = $schemaClosure();
if ($schema->hasTable('news_items') &&
!$schema->getTable('news_items')->hasForeignKey('feed')) {
$schema->getTable('news_items')
->addForeignKeyConstraint(
$schema->getTable('news_feeds')->getName(),
['feed_id'],
['id'],
['onDelete' => 'CASCADE'],
'feed'
);
}
if ($schema->hasTable('news_feeds') &&
!$schema->getTable('news_feeds')->hasForeignKey('folder')) {
$schema->getTable('news_feeds')
->addForeignKeyConstraint(
$schema->getTable('news_folders')->getName(),
['folder_id'],
['id'],
['onDelete' => 'CASCADE'],
'folder'
);
}
return $schema;
}
/**
* @param IOutput $output
* @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
* @param array $options
*
* @return void
*/
public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
}
}
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