| // 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. |
| |
| #include "exec/empty-set-node.h" |
| |
| #include "exec/exec-node-util.h" |
| |
| #include "common/names.h" |
| |
| namespace impala { |
| |
| EmptySetNode::EmptySetNode( |
| ObjectPool* pool, const TPlanNode& tnode, const DescriptorTbl& descs) |
| : ExecNode(pool, tnode, descs) {} |
| |
| Status EmptySetNode::Open(RuntimeState* state) { |
| SCOPED_TIMER(runtime_profile_->total_time_counter()); |
| ScopedOpenEventAdder ea(this); |
| return ExecNode::Open(state); |
| } |
| |
| Status EmptySetNode::GetNext(RuntimeState* state, RowBatch* row_batch, bool* eos) { |
| ScopedGetNextEventAdder ea(this, eos); |
| *eos = true; |
| return Status::OK(); |
| } |
| } // namespace impala |