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<?php
/**
* Bitrix Framework
* @package bitrix
* @subpackage main
* @copyright 2001-2017 Bitrix
*/
namespace Bitrix\Main\ORM\Query;
use Bitrix\Main\ArgumentException;
use Bitrix\Main\DB\Connection;
/**
* UNION handler for Query.
*
* @package bitrix
* @subpackage main
*/
class Union
{
/** @var UnionCondition[] */
protected $queries;
/** @var array */
protected $order;
/** @var int */
protected $limit;
/** @var int */
protected $offset;
/** @var Connection */
protected $connection;
public function __construct(Connection $connection)
{
$this->connection = $connection;
}
/**
* @param UnionCondition $query
*
* @return $this
*/
public function addQuery(UnionCondition $query)
{
$this->queries[] = $query;
return $this;
}
/**
* @return UnionCondition[]
*/
public function getQueries()
{
return $this->queries;
}
/**
* @param mixed $order
*
* @return $this
*/
public function setOrder($order)
{
$this->order = array();
if (!is_array($order))
{
$order = array($order);
}
foreach ($order as $k => $v)
{
if (is_numeric($k))
{
$this->addOrder($v);
}
else
{
$this->addOrder($k, $v);
}
}
return $this;
}
/**
* @param string $definition
* @param string $order
*
* @return $this
* @throws ArgumentException
*/
public function addOrder($definition, $order = 'ASC')
{
$order = strtoupper($order);
if (!in_array($order, array('ASC', 'DESC'), true))
{
throw new ArgumentException(sprintf('Invalid order "%s"', $order));
}
$helper = $this->connection->getSqlHelper();
if ($order == 'ASC')
{
$order = $helper->getAscendingOrder();
}
else
{
$order = $helper->getDescendingOrder();
}
$this->order[$definition] = $order;
return $this;
}
/**
* @return array
*/
public function getOrder()
{
return $this->order;
}
/**
* @param int $limit
*
* @return $this
*/
public function setLimit($limit)
{
$this->limit = $limit;
return $this;
}
/**
* @return int
*/
public function getLimit()
{
return $this->limit;
}
/**
* @param $offset
*
* @return $this
*/
public function setOffset($offset)
{
$this->offset = $offset;
return $this;
}
/**
* @return int
*/
public function getOffset()
{
return $this->offset;
}
}
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