0499b2211b
1. Add table function node 2. Add 3 table functions: explode_split, explode_bitmap and explode_json_array
78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
// 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.
|
|
|
|
#pragma once
|
|
|
|
#include "exec/exec_node.h"
|
|
|
|
namespace doris {
|
|
|
|
class MemPool;
|
|
class RowBatch;
|
|
class TableFunction;
|
|
class TupleRow;
|
|
|
|
// TableFunctionNode
|
|
class TableFunctionNode : public ExecNode {
|
|
public:
|
|
TableFunctionNode(ObjectPool* pool, const TPlanNode& tnode, const DescriptorTbl& descs);
|
|
~TableFunctionNode();
|
|
|
|
virtual Status init(const TPlanNode& tnode, RuntimeState* state = nullptr);
|
|
virtual Status prepare(RuntimeState* state);
|
|
virtual Status open(RuntimeState* state);
|
|
virtual Status get_next(RuntimeState* state, RowBatch* row_batch, bool* eos);
|
|
virtual Status close(RuntimeState* state);
|
|
|
|
private:
|
|
|
|
Status _prepare_output_slot_ids(const TPlanNode& tnode);
|
|
|
|
// return:
|
|
// 0: all fns are eos
|
|
// -1: all fns are not eos
|
|
// >0: some of fns are eos
|
|
int _find_last_fn_eos_idx();
|
|
|
|
Status _process_next_child_row();
|
|
|
|
bool _roll_table_functions(int last_eos_idx);
|
|
|
|
private:
|
|
|
|
int64_t _cur_child_offset = 0;
|
|
TupleRow* _cur_child_tuple_row = nullptr;
|
|
std::shared_ptr<RowBatch> _cur_child_batch;
|
|
// true means current child batch is completely consumed.
|
|
// we should get next batch from child node.
|
|
bool _child_batch_exhausted = true;
|
|
|
|
std::vector<ExprContext*> _fn_ctxs;
|
|
std::vector<TableFunction*> _fns;
|
|
std::vector<void*> _fn_values;
|
|
int _fn_num = 0;
|
|
|
|
// std::unordered_set<SlotId> _output_slot_ids;
|
|
std::vector<bool> _output_slot_ids;
|
|
|
|
int _parent_tuple_desc_size = -1;
|
|
int _child_tuple_desc_size = -1;
|
|
std::vector<int> _child_slot_sizes;
|
|
};
|
|
|
|
}; // namespace doris
|