/**
* @internal
* @param string column name
* @param bool|NULL TRUE - cache, FALSE - don't cache, NULL - remove
* @return bool
*/
public function access($key, $cache = TRUE)
{
if ($cache === NULL) {
if (is_array($this->accessed)) {
$this->accessed[$key] = FALSE;
}
return FALSE;
}
if ($key === NULL) {
$this->accessed = '';
} elseif (!is_string($this->accessed)) {
$this->accessed[$key] = $cache;
}
if ($cache && !$this->sqlBuilder->getSelect() && $this->prevAccessed && ($key === NULL || !isset($this->prevAccessed[$key]))) {
$this->prevAccessed = '';
$this->emptyResultSet();
return TRUE;
}
return FALSE;
}