function __construct(DatabaseConnection $parent)
{
//echo "Opening Connection\n";
if ($parent->is_transaction()) {
$this->using_savepoints = true;
$this->savepoint_name = 'transaction_' . uniqid();
$parent->query('SAVEPOINT ' . pg_escape_identifier($this->savepoint_name));
} else {
$this->using_savepoints = false;
$parent->query("START TRANSACTION");
}
$this->parent_connection = $parent;
}
