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<?php
namespace ipl\Sql;
use ipl\Stdlib\Contract\Paginatable;
use IteratorAggregate;
use Traversable;
/**
* Cursor for ipl SQL queries
*/
class Cursor implements IteratorAggregate, Paginatable
{
/** @var Connection */
protected $db;
/** @var Select */
protected $select;
/** @var array */
protected $fetchModeAndArgs = [];
/**
* Create a new cursor for the given connection and query
*
* @param Connection $db
* @param Select $select
*/
public function __construct(Connection $db, Select $select)
{
$this->db = $db;
$this->select = $select;
}
/**
* Get the fetch mode
*
* @return array
*/
public function getFetchMode()
{
return $this->fetchModeAndArgs;
}
/**
* Set the fetch mode
*
* @param int $fetchMode Fetch mode as one of the PDO fetch mode constants.
* Please see {@link https://www.php.net/manual/en/pdostatement.setfetchmode} for details
* @param mixed ...$args Fetch mode arguments
*
* @return $this
*/
public function setFetchMode($fetchMode, ...$args)
{
array_unshift($args, $fetchMode);
$this->fetchModeAndArgs = $args;
return $this;
}
public function getIterator(): Traversable
{
return $this->db->yieldAll($this->select, ...$this->getFetchMode());
}
public function hasLimit()
{
return $this->select->hasLimit();
}
public function getLimit()
{
return $this->select->getLimit();
}
public function limit($limit)
{
$this->select->limit($limit);
return $this;
}
public function hasOffset()
{
return $this->select->hasOffset();
}
public function getOffset()
{
return $this->select->getOffset();
}
public function offset($offset)
{
$this->select->offset($offset);
return $this;
}
public function count(): int
{
return $this->db->select($this->select->getCountQuery())->fetchColumn(0);
}
}
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