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<?php
/**
* @copyright Copyright (c) 2017 Robin Appelman <robin@icewind.nl>
*
* @author Joas Schilling <coding@schilljs.com>
* @author Robin Appelman <robin@icewind.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\DB\QueryBuilder\FunctionBuilder;
use OC\DB\QueryBuilder\QueryFunction;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\DB\QueryBuilder\IQueryFunction;
class PgSqlFunctionBuilder extends FunctionBuilder {
public function concat($x, ...$expr): IQueryFunction {
$args = func_get_args();
$list = [];
foreach ($args as $item) {
$list[] = $this->queryBuilder->expr()->castColumn($item, IQueryBuilder::PARAM_STR);
}
return new QueryFunction(sprintf('(%s)', implode(' || ', $list)));
}
public function groupConcat($expr, ?string $separator = ','): IQueryFunction {
$castedExpression = $this->queryBuilder->expr()->castColumn($expr, IQueryBuilder::PARAM_STR);
if (is_null($separator)) {
return new QueryFunction('string_agg(' . $castedExpression . ')');
}
$separator = $this->connection->quote($separator);
return new QueryFunction('string_agg(' . $castedExpression . ', ' . $separator . ')');
}
}
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