780900ac9c
Support conditional filtering of original data in broker load and routine load
eg:
```
LOAD LABEL `label1`
(
DATA INFILE ('bos://cmy-repo/1.csv')
INTO TABLE tbl2
COLUMNS TERMINATED BY '\t'
(event_day, product_id, ocpc_stage, user_id)
SET (
ocpc_stage = ocpc_stage + 100
)
PRECEDING FILTER user_id = 1381035
WHERE ocpc_stage > 30
)
...
```
79 lines
2.6 KiB
C++
79 lines
2.6 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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#ifndef ORC_SCANNER_H
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#define ORC_SCANNER_H
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#include <orc/OrcFile.hh>
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#include "exec/base_scanner.h"
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namespace doris {
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// Broker scanner convert the data read from broker to doris's tuple.
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class ORCScanner : public BaseScanner {
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public:
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ORCScanner(RuntimeState* state, RuntimeProfile* profile, const TBrokerScanRangeParams& params,
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const std::vector<TBrokerRangeDesc>& ranges,
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const std::vector<TNetworkAddress>& broker_addresses,
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const std::vector<ExprContext*>& pre_filter_ctxs,
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ScannerCounter* counter);
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~ORCScanner() override;
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// Open this scanner, will initialize information need to
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Status open() override;
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// Get next tuple
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Status get_next(Tuple* tuple, MemPool* tuple_pool, bool* eof) override;
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// Close this scanner
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void close() override;
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private:
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// Read next buffer from reader
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Status open_next_reader();
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private:
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const std::vector<TBrokerRangeDesc>& _ranges;
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const std::vector<TNetworkAddress>& _broker_addresses;
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// Reader
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int _next_range;
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bool _cur_file_eof;
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bool _scanner_eof;
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// orc file reader object
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orc::ReaderOptions _options;
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orc::RowReaderOptions _row_reader_options;
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std::shared_ptr<orc::ColumnVectorBatch> _batch;
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std::unique_ptr<orc::Reader> _reader;
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std::unique_ptr<orc::RowReader> _row_reader;
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// The batch after reading from orc data is arranged in the original order,
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// so we need to record the index in the original order to correspond the column names to the order
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std::vector<int> _position_in_orc_original;
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int _num_of_columns_from_file;
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int _total_groups; // groups in a orc file
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int _current_group;
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int64_t _rows_of_group; // rows in a group.
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int64_t _current_line_of_group;
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};
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} // namespace doris
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#endif //ORC_SCANNER_H
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