38ffe685b5
* [Bug](ODBC) fix vectorized null value error report in odbc scan node Co-authored-by: lihaopeng <lihaopeng@baidu.com>
88 lines
3.1 KiB
C++
88 lines
3.1 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 "exec/odbc_connector.h"
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#include "exec/scan_node.h"
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#include "exec/text_converter.hpp"
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namespace doris {
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namespace vectorized {
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class VOdbcScanNode : public ScanNode {
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public:
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VOdbcScanNode(ObjectPool* pool, const TPlanNode& tnode, const DescriptorTbl& descs,
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std::string scan_node_type = "VOdbcScanNode");
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~VOdbcScanNode() = default;
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// initialize odbc_scanner, and create text_converter.
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virtual Status prepare(RuntimeState* state) override;
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// Start ODBC scan using odbc_scanner.
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virtual Status open(RuntimeState* state) override;
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Status get_next(RuntimeState* state, RowBatch* row_batch, bool* eos) override {
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return Status::NotSupported("Not Implemented VOdbcScanNode Node::get_next scalar");
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}
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Status get_next(RuntimeState* state, Block* block, bool* eos) override;
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// Close the odbc_scanner, and report errors.
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virtual Status close(RuntimeState* state) override;
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// No use
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virtual Status set_scan_ranges(const std::vector<TScanRangeParams>& scan_ranges) override;
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const TupleDescriptor* get_tuple_desc() { return _tuple_desc; }
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TextConverter* get_text_converter() { return _text_converter.get(); }
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ODBCConnector* get_odbc_scanner() { return _odbc_scanner.get(); }
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const std::string& get_scan_node_type() { return _scan_node_type; }
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bool is_init() { return _is_init; }
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protected:
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// Write debug string of this into out.
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virtual void debug_string(int indentation_level, std::stringstream* out) const override;
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private:
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bool _is_init;
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std::string _scan_node_type;
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// Name of Odbc table
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std::string _table_name;
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std::string _connect_string;
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std::string _query_string;
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// Tuple id resolved in prepare() to set _tuple_desc;
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TupleId _tuple_id;
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// Descriptor of tuples read from ODBC table.
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const TupleDescriptor* _tuple_desc;
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// Tuple index in tuple row.
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int _slot_num;
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// Pool for allocating tuple data, including all varying-length slots.
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std::unique_ptr<MemPool> _tuple_pool;
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// Scanner of ODBC.
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std::unique_ptr<ODBCConnector> _odbc_scanner;
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ODBCConnectorParam _odbc_param;
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// Helper class for converting text to other types;
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std::unique_ptr<TextConverter> _text_converter;
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};
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} // namespace vectorized
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} // namespace doris
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