/**
* {@inheritdoc}
* @SuppressWarnings(PHPMD.UnusedLocalVariable)
*/
public function loadNext($data, $rightIndex, $upper = null)
{
$select = clone $this->select;
$value = $this->getValueFiled();
$select->columns(['count' => 'COUNT(*)'])->where("{$value} > ?", $data + self::DELTA);
if ($upper !== null) {
$select->where("{$value} < ? ", $data - self::DELTA);
}
$offset = $this->select->getAdapter()->fetchRow($select)['count'];
if (!$offset) {
return false;
}
$select = clone $this->select;
$select->where("{$value} >= ?", $data - self::DELTA);
if ($upper !== null) {
$select->where("{$value} < ? ", $data - self::DELTA);
}
$select->order("{$value} DESC")->limit($rightIndex - $offset + 1, $offset - 1);
return $this->arrayValuesToFloat(array_reverse($this->select->getAdapter()->fetchCol($select)));
}