| 35 | cur_qit_(nullptr) {} |
| 36 | |
| 37 | void CombineIterator::SeekToFirst() { |
| 38 | q_its_.erase(std::remove_if(q_its_.begin(), q_its_.end(), |
| 39 | [](const QueryIt& q_it) { |
| 40 | return !q_it.table || !q_it.it; |
| 41 | }), |
| 42 | q_its_.end()); |
| 43 | if (q_its_.empty()) { |
| 44 | return; |
| 45 | } |
| 46 | if (st_type_ == ::fedb::api::GetType::kSubKeyEq) { |
| 47 | st_type_ = ::fedb::api::GetType::kSubKeyLe; |
| 48 | } |
| 49 | if (!::fedb::api::GetType_IsValid(st_type_)) { |
| 50 | PDLOG(WARNING, "invalid st type %s", |
| 51 | ::fedb::api::GetType_Name(st_type_).c_str()); |
| 52 | q_its_.clear(); |
| 53 | return; |
| 54 | } |
| 55 | for (auto& q_it : q_its_) { |
| 56 | if (st_ > 0) { |
| 57 | if (expire_cnt_ == 0) { |
| 58 | Seek(q_it.it.get(), st_, st_type_); |
| 59 | } else { |
| 60 | switch (ttl_type_) { |
| 61 | case ::fedb::storage::TTLType::kAbsoluteTime: |
| 62 | Seek(q_it.it.get(), st_, st_type_); |
| 63 | break; |
| 64 | case ::fedb::storage::TTLType::kAbsAndLat: |
| 65 | if (!SeekWithCount(q_it.it.get(), st_, st_type_, |
| 66 | expire_cnt_, &q_it.iter_pos)) { |
| 67 | Seek(q_it.it.get(), st_, st_type_); |
| 68 | } |
| 69 | break; |
| 70 | default: |
| 71 | SeekWithCount(q_it.it.get(), st_, st_type_, expire_cnt_, |
| 72 | &q_it.iter_pos); |
| 73 | break; |
| 74 | } |
| 75 | } |
| 76 | } else { |
| 77 | q_it.it->SeekToFirst(); |
| 78 | } |
| 79 | } |
| 80 | SelectIterator(); |
| 81 | } |
| 82 | |
| 83 | void CombineIterator::SelectIterator() { |
| 84 | uint64_t max_ts = 0; |