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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Updater\Migration\Db;
use Piwik\DbHelper;
/**
* @see Factory::dropColumn()
* @ignore
*/
class DropColumns extends Sql
{
public function __construct($tableName, $columnNames)
{
$table = DbHelper::getTableColumns($tableName);
// we need to remove all not existing columns. Otherwise if only one of the columns doesn't exist, all of
// the columns wouldn't be removed
$columnNames = array_filter($columnNames, function ($columnName) use ($table) {
return isset($table[$columnName]);
});
if (empty($columnNames)) {
parent::__construct('', static::ERROR_CODE_COLUMN_NOT_EXISTS);
} else {
$columnNames = array_unique($columnNames);
$dropColumns = array_map(function ($columnName) {
return sprintf('DROP COLUMN `%s`', $columnName);
}, $columnNames);
$sql = sprintf("ALTER TABLE `%s` %s", $tableName, implode(', ', $dropColumns));
parent::__construct($sql, static::ERROR_CODE_COLUMN_NOT_EXISTS);
}
}
}
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