90dd8716ed
Co-authored-by: Jerry Hu <mrhhsg@gmail.com> 1. Filtering is done at the sending end rather than the receiving end 2. Projection is done at the sending end rather than the receiving end 3. Each sender can use different shuffle policies to send data
46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#pragma once
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#include "common/status.h"
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#include "exec/exec_node.h"
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namespace doris {
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class DescriptorTbl;
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class ObjectPool;
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class RuntimeState;
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class TPlanNode;
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namespace vectorized {
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class Block;
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class VSelectNode final : public ExecNode {
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public:
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VSelectNode(ObjectPool* pool, const TPlanNode& tnode, const DescriptorTbl& descs);
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Status init(const TPlanNode& tnode, RuntimeState* state = nullptr) override;
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Status prepare(RuntimeState* state) override;
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Status open(RuntimeState* state) override;
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Status get_next(RuntimeState* state, vectorized::Block* block, bool* eos) override;
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Status close(RuntimeState* state) override;
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Status pull(RuntimeState* state, vectorized::Block* output_block, bool* eos) override;
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private:
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// true if last get_next() call on child signalled eos
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bool _child_eos;
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};
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} // namespace vectorized
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} // namespace doris
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