static void get_qnames(Iterator *it, std::vector<std::string> *list){
while(it->next()){
Bytes ks = it->key();
//dump(ks.data(), ks.size());
if(ks.data()[0] != DataType::QSIZE){
break;
}
std::string n;
if(decode_qsize_key(ks, &n) == -1){
continue;
}
list->push_back(n);
}
}
int SSDB::qlist(const Bytes &name_s, const Bytes &name_e, uint64_t limit,
std::vector<std::string> *list){
std::string start;
std::string end;
start = encode_qsize_key(name_s);
if(!name_e.empty()){
end = encode_qsize_key(name_e);
}
Iterator *it = this->iterator(start, end, limit);
while(it->next()){
Bytes ks = it->key();
//dump(ks.data(), ks.size());
if(ks.data()[0] != DataType::QSIZE){
break;
}
std::string n;
if(decode_qsize_key(ks, &n) == -1){
continue;
}
list->push_back(n);
}
delete it;
return 0;
}
int SSDBImpl::key_range(std::vector<std::string> *keys){
int ret = 0;
std::string kstart, kend;
std::string hstart, hend;
std::string zstart, zend;
std::string qstart, qend;
Iterator *it;
it = this->iterator(encode_kv_key(""), "", 1);
if(it->next()){
Bytes ks = it->key();
if(ks.data()[0] == DataType::KV){
std::string n;
if(decode_kv_key(ks, &n) == -1){
ret = -1;
}else{
kstart = n;
}
}
}
delete it;
it = this->rev_iterator(encode_kv_key("\xff"), "", 1);
if(it->next()){
Bytes ks = it->key();
if(ks.data()[0] == DataType::KV){
std::string n;
if(decode_kv_key(ks, &n) == -1){
ret = -1;
}else{
kend = n;
}
}
}
delete it;
it = this->iterator(encode_hsize_key(""), "", 1);
if(it->next()){
Bytes ks = it->key();
if(ks.data()[0] == DataType::HSIZE){
std::string n;
if(decode_hsize_key(ks, &n) == -1){
ret = -1;
}else{
hstart = n;
}
}
}
delete it;
it = this->rev_iterator(encode_hsize_key("\xff"), "", 1);
if(it->next()){
Bytes ks = it->key();
if(ks.data()[0] == DataType::HSIZE){
std::string n;
if(decode_hsize_key(ks, &n) == -1){
ret = -1;
}else{
hend = n;
}
}
}
delete it;
it = this->iterator(encode_zsize_key(""), "", 1);
if(it->next()){
Bytes ks = it->key();
if(ks.data()[0] == DataType::ZSIZE){
std::string n;
if(decode_hsize_key(ks, &n) == -1){
ret = -1;
}else{
zstart = n;
}
}
}
delete it;
it = this->rev_iterator(encode_zsize_key("\xff"), "", 1);
if(it->next()){
Bytes ks = it->key();
if(ks.data()[0] == DataType::ZSIZE){
std::string n;
if(decode_hsize_key(ks, &n) == -1){
ret = -1;
}else{
zend = n;
}
}
}
delete it;
it = this->iterator(encode_qsize_key(""), "", 1);
if(it->next()){
Bytes ks = it->key();
if(ks.data()[0] == DataType::QSIZE){
std::string n;
if(decode_qsize_key(ks, &n) == -1){
ret = -1;
}else{
qstart = n;
}
}
}
delete it;
it = this->rev_iterator(encode_qsize_key("\xff"), "", 1);
if(it->next()){
Bytes ks = it->key();
if(ks.data()[0] == DataType::QSIZE){
std::string n;
if(decode_qsize_key(ks, &n) == -1){
ret = -1;
}else{
qend = n;
}
}
}
delete it;
keys->push_back(kstart);
keys->push_back(kend);
keys->push_back(hstart);
keys->push_back(hend);
keys->push_back(zstart);
keys->push_back(zend);
keys->push_back(qstart);
keys->push_back(qend);
return ret;
}