public function exists($query)
{
$query = Horde_Rdo_Query::create($query, $this);
$query->setFields(1)->clearSort();
list($sql, $bindParams) = $query->getQuery();
return (bool) $this->adapter->selectValue($sql, $bindParams);
} /**
* Implementation of the offsetExists() method for ArrayAccess
* This method is executed when using isset() or empty() on Horde_Rdo_List objects
* @param integer $offset The offset to check.
*
* @return boolean Whether or not an offset exists.
*/
public function offsetExists($offset)
{
$query = Horde_Rdo_Query::create($this->_query);
$query->limit(1, $offset);
return $this->_mapper->exists($query);
}
