/**
* @param $query string
* @return string[]|null
*/
private function guessContext($query)
{
$context = [];
// first clause between `...` is probably the name of the table
$table_name = mParse($query, BQ, BQ);
if ($table_name) {
$class_name = Dao::classNameOf($table_name);
if ($class_name) {
$context[] = $class_name;
}
}
// every JOIN `...` may be the name of a table
$joins = explode('JOIN ' . BQ, $query);
array_shift($joins);
foreach ($joins as $join) {
$table_name = lParse($join, BQ);
if ($table_name) {
$class_name = Dao::classNameOf($table_name);
if ($class_name) {
$context[] = $class_name;
}
}
}
return $context ? $context : null;
}