/**
* Populate the {@link $_parts} 'join' key
*
* Does the dirty work of populating the join key.
*
* The $name and $cols parameters follow the same logic
* as described in the from() method.
*
* @param null|string $type Type of join; inner, left, and null are currently supported
* @param array|string|Zend_Db_Expr $name Table name
* @param string $cond Join on this condition
* @param array|string $cols The columns to select from the joined table
* @param string $schema The database name to specify, if any.
* @return Zend_Db_Select This Zend_Db_Select object
* @throws Zend_Db_Select_Exception
*/
protected function _join($type, $name, $cond, $cols, $schema = null)
{
if ($type == self::INNER_JOIN && empty($cond)) {
$type = self::CROSS_JOIN;
}
return parent::_join($type, $name, $cond, $cols, $schema);
}
