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 MEASURE_TABLE_H 17 #define MEASURE_TABLE_H 18 19 #include "table_base.h" 20 #include "trace_data_cache.h" 21 22 namespace SysTuning { 23 namespace TraceStreamer { 24 class MeasureTable : public TableBase { 25 public: 26 explicit MeasureTable(const TraceDataCache* dataCache); 27 ~MeasureTable() override; 28 std::unique_ptr<TableBase::Cursor> CreateCursor() override; 29 30 private: GetSize()31 int64_t GetSize() override 32 { 33 return dataCache_->GetConstMeasureData().Size(); 34 } 35 void GetOrbyes(FilterConstraints& measurefc, EstimatedIndexInfo& measureei) override; 36 void FilterByConstraint(FilterConstraints& measurefc, 37 double& measurefilterCost, 38 size_t measurerowCount, 39 uint32_t measurecurrenti) override; 40 bool CanFilterSorted(const char op, size_t& rowCount) const; 41 42 class Cursor : public TableBase::Cursor { 43 public: 44 explicit Cursor(const TraceDataCache* dataCache, TableBase* table); 45 ~Cursor() override; 46 int32_t Filter(const FilterConstraints& fc, sqlite3_value** argv) override; 47 int32_t Column(int32_t column) const override; 48 49 private: 50 const Measure& measureObj; 51 }; 52 }; 53 } // namespace TraceStreamer 54 } // namespace SysTuning 55 56 #endif // MEASURE_TABLE_H 57