1 /* 2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SRC_TRACE_PROCESSOR_DB_NULL_OVERLAY_H_ 18 #define SRC_TRACE_PROCESSOR_DB_NULL_OVERLAY_H_ 19 20 #include <variant> 21 #include "perfetto/ext/base/status_or.h" 22 #include "src/trace_processor/db/column.h" 23 #include "src/trace_processor/db/column_overlay.h" 24 #include "src/trace_processor/db/storage.h" 25 26 namespace perfetto { 27 namespace trace_processor { 28 namespace column { 29 30 // Overlay responsible for operations related to column nullability. 31 class NullOverlay : public ColumnOverlay { 32 public: NullOverlay(std::unique_ptr<ColumnOverlay> inner,const BitVector * null_bv)33 explicit NullOverlay(std::unique_ptr<ColumnOverlay> inner, 34 const BitVector* null_bv) 35 : inner_(std::move(inner)), null_bv_(null_bv) {} 36 37 void Filter(FilterOp, SqlValue, RowMap&) const override; 38 void StableSort(uint32_t* rows, uint32_t rows_size) const override; 39 40 private: 41 std::unique_ptr<ColumnOverlay> inner_; 42 43 // Vector of data nullability. 44 const BitVector* null_bv_; 45 }; 46 47 } // namespace column 48 } // namespace trace_processor 49 } // namespace perfetto 50 51 #endif // SRC_TRACE_PROCESSOR_DB_NULL_OVERLAY_H_ 52