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<?php
declare(strict_types=1);
namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\Ltree;
use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\BaseVariadicFunction;
/**
* Implementation of PostgreSQL index function for ltree.
*
* Returns position of first occurrence of b in a, or -1 if not found.
* The search starts at position offset; negative offset means start -offset labels from the end of the path.
* @see https://www.postgresql.org/docs/current/ltree.html#LTREE-FUNCTIONS
* @since 3.5
* @author Martin Georgiev <[email protected]>
* @example Using it in DQL: "SELECT INDEX(e.path, 'Child1') FROM Entity e"
* Returns integer, position of first occurrence or -1 if not found.
*/
class Index extends BaseVariadicFunction
{
protected function getNodeMappingPattern(): array
return ['StringPrimary,StringPrimary,SimpleArithmeticExpression'];
}
protected function getFunctionName(): string
return 'index';
protected function getMinArgumentCount(): int
return 2;
protected function getMaxArgumentCount(): int
return 3;
martin-georgiev /
postgresql-for-doctrine
