Method QueryFutureImpl

src/sdk/sql_cluster_router.cc:79–84

class QueryFutureImpl : public QueryFuture {
 public:
    explicit QueryFutureImpl(fedb::RpcCallback<fedb::api::QueryResponse>* callback)
        : callback_(callback) {
            if (callback_) {
                callback_->Ref();
            }
    }
    ~QueryFutureImpl() {
        if (callback_) {
            callback_->UnRef();