1 // Copyright (C) 2022 Google LLC 2 // 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 #ifndef ICING_JOIN_AGGREGATION_SCORER_H_ 16 #define ICING_JOIN_AGGREGATION_SCORER_H_ 17 18 #include <memory> 19 #include <vector> 20 21 #include "icing/proto/search.pb.h" 22 #include "icing/scoring/scored-document-hit.h" 23 24 namespace icing { 25 namespace lib { 26 27 class AggregationScorer { 28 public: 29 static std::unique_ptr<AggregationScorer> Create( 30 const JoinSpecProto& join_spec); 31 32 virtual ~AggregationScorer() = default; 33 34 virtual double GetScore(const ScoredDocumentHit& parent, 35 const std::vector<ScoredDocumentHit>& children) = 0; 36 }; 37 38 } // namespace lib 39 } // namespace icing 40 41 #endif // ICING_JOIN_AGGREGATION_SCORER_H_ 42