1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef I_KV_DB_MULTI_VER_TRANSACTION_H 17 #define I_KV_DB_MULTI_VER_TRANSACTION_H 18 19 #ifndef OMIT_MULTI_VER 20 #include "db_types.h" 21 #include "multi_ver_def.h" 22 #include "multi_ver_kv_entry.h" 23 24 namespace DistributedDB { 25 class IKvDBMultiVerTransaction { 26 public: ~IKvDBMultiVerTransaction()27 virtual ~IKvDBMultiVerTransaction() {}; 28 virtual int Put(const Key &key, const Value &value) = 0; 29 virtual int Delete(const Key &key) = 0; 30 virtual int Clear() = 0; 31 virtual int Get(const Key &key, Value &value) const = 0; 32 virtual int GetEntries(const Key &keyPrefix, std::vector<Entry> &entries) const = 0; 33 virtual int PutBatch(const std::vector<MultiVerKvEntry *> &entries, bool isLocal, 34 std::vector<Value> &values) = 0; 35 virtual int GetEntriesByVersion(const Version &versionInfo, std::vector<MultiVerKvEntry *> &entries) const = 0; 36 virtual int GetDiffEntries(const Version &begin, const Version &end, MultiVerDiffData &data) const = 0; 37 virtual int GetMaxVersion(MultiVerDataType type, Version &maxVersion) const = 0; 38 virtual int ClearEntriesByVersion(const Version &versionInfo) = 0; 39 virtual int StartTransaction() = 0; 40 virtual int RollBackTransaction() = 0; 41 virtual int CommitTransaction() = 0; 42 virtual int UpdateTimestampByVersion(const Version &version, Timestamp stamp) const = 0; 43 virtual bool IsDataChanged() const = 0; // only for write transaction. 44 virtual bool IsRecordCleared(const Timestamp timestamp) const = 0; 45 virtual Timestamp GetCurrentMaxTimestamp() const = 0; 46 virtual void SetVersion(const Version &versionInfo) = 0; 47 virtual Version GetVersion() const = 0; 48 virtual int GetEntriesByVersion(Version version, std::list<MultiVerTrimedVersionData> &data) const = 0; 49 virtual int GetOverwrittenClearTypeEntries(Version clearVersion, 50 std::list<MultiVerTrimedVersionData> &data) const = 0; 51 virtual int GetOverwrittenNonClearTypeEntries(Version version, const Key &hashKey, 52 std::list<MultiVerTrimedVersionData> &data) const = 0; 53 virtual int DeleteEntriesByHashKey(Version version, const Key &hashKey) = 0; 54 virtual int GetValueForTrimSlice(const Key &hashKey, const Version vision, Value &value) const = 0; 55 }; 56 } // namespace DistributedDB 57 58 #endif // I_KV_DB_MULTI_VER_TRANSACTION_H 59 #endif