| // 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_SINGULAR_ROW_SRC_NODE_H_ |
| #define IMPALA_EXEC_SINGULAR_ROW_SRC_NODE_H_ |
| |
| #include "exec/exec-node.h" |
| |
| namespace impala { |
| |
| class SingularRowSrcPlanNode : public PlanNode { |
| public: |
| virtual Status CreateExecNode(RuntimeState* state, ExecNode** node) const override; |
| ~SingularRowSrcPlanNode(){} |
| }; |
| |
| /// Exec node that returns a single row from its containing Subplan node. |
| /// Does not have any children. |
| |
| class SingularRowSrcNode : public ExecNode { |
| public: |
| SingularRowSrcNode( |
| ObjectPool* pool, const SingularRowSrcPlanNode& pnode, const DescriptorTbl& descs); |
| virtual Status GetNext(RuntimeState* state, RowBatch* row_batch, bool* eos); |
| }; |
| |
| } |
| |
| #endif |