public function atomExists($atomId, $concept)
{
$tableInfo = Concept::getConceptTableInfo($concept);
$table = $tableInfo['table'];
$conceptCol = $tableInfo['cols'][0];
$newAtom = $this->typeConversion($atomId, $concept);
$atomIdEsc = $this->escape($atomId);
$query = "/* Check if atom exists */ SELECT `{$conceptCol}` FROM `{$table}` WHERE `{$conceptCol}` = '{$atomIdEsc}'";
$result = $this->Exe($query);
if (empty($result)) {
return false;
} else {
return true;
}
}
public static function createNewAtom($concept)
{
if (strpos($concept, '_AUTOINCREMENT') !== false) {
// TODO: change to type definition when Ampersand is supporting IT-TYPE
$database = Database::singleton();
$tableInfo = Concept::getConceptTableInfo($concept);
$table = $tableInfo['table'];
$col = $tableInfo['cols'][0];
$query = "SELECT MAX(`{$col}`) as `MAX` FROM `{$table}`";
$result = array_column($database->Exe($query), 'MAX');
if (empty($result)) {
$atomId = 1;
} else {
$atomId = $result[0] + 1;
}
} else {
$time = explode(' ', microTime());
// yields [seconds,microseconds] both in seconds, e.g. ["1322761879", "0.85629400"]
$atomId = $concept . '_' . $time[1] . "_" . substr($time[0], 2, 6);
// we drop the leading "0." and trailing "00" from the microseconds
}
return $atomId;
}
