| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #ifndef IMPALA_EXEC_AGGREGATION_NODE_H |
| #define IMPALA_EXEC_AGGREGATION_NODE_H |
| |
| #include <memory> |
| |
| #include "exec/aggregation-node-base.h" |
| |
| namespace impala { |
| |
| class RowBatch; |
| class RuntimeState; |
| |
| /// Node for doing partitioned hash aggregation. |
| /// This node consumes the input from child(0) during Open() and then passes it to the |
| /// Aggregator, which does the actual work of aggregating. |
| class AggregationNode : public AggregationNodeBase { |
| public: |
| AggregationNode(ObjectPool* pool, const TPlanNode& tnode, const DescriptorTbl& descs); |
| |
| virtual Status Open(RuntimeState* state) override; |
| virtual Status GetNext(RuntimeState* state, RowBatch* row_batch, bool* eos) override; |
| virtual void Close(RuntimeState* state) override; |
| |
| virtual void DebugString(int indentation_level, std::stringstream* out) const override; |
| }; |
| } // namespace impala |
| |
| #endif // IMPALA_EXEC_AGGREGATION_NODE_H |