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76 lines
2.6 KiB
C++
76 lines
2.6 KiB
C++
#include <Processors/Formats/Impl/HiveTextRowInputFormat.h>
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#if USE_HIVE
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int NOT_IMPLEMENTED;
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}
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static FormatSettings updateFormatSettings(const FormatSettings & settings, const Block & header)
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{
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FormatSettings updated = settings;
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updated.skip_unknown_fields = true;
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updated.with_names_use_header = true;
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updated.date_time_input_format = FormatSettings::DateTimeInputFormat::BestEffort;
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updated.csv.delimiter = updated.hive_text.fields_delimiter;
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if (settings.hive_text.input_field_names.empty())
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updated.hive_text.input_field_names = header.getNames();
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return updated;
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}
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HiveTextRowInputFormat::HiveTextRowInputFormat(
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const Block & header_, ReadBuffer & in_, const Params & params_, const FormatSettings & format_settings_)
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: HiveTextRowInputFormat(header_, std::make_unique<PeekableReadBuffer>(in_), params_, updateFormatSettings(format_settings_, header_))
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{
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}
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HiveTextRowInputFormat::HiveTextRowInputFormat(
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const Block & header_, std::unique_ptr<PeekableReadBuffer> buf_, const Params & params_, const FormatSettings & format_settings_)
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: CSVRowInputFormat(
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header_, *buf_, params_, true, false, format_settings_, std::make_unique<HiveTextFormatReader>(std::move(buf_), format_settings_))
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{
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}
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HiveTextFormatReader::HiveTextFormatReader(std::unique_ptr<PeekableReadBuffer> buf_, const FormatSettings & format_settings_)
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: CSVFormatReader(*buf_, format_settings_), buf(std::move(buf_)), input_field_names(format_settings_.hive_text.input_field_names)
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{
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}
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std::vector<String> HiveTextFormatReader::readNames()
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{
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PeekableReadBufferCheckpoint checkpoint{*buf, true};
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auto values = readHeaderRow();
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input_field_names.resize(values.size());
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return input_field_names;
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}
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std::vector<String> HiveTextFormatReader::readTypes()
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{
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throw Exception(ErrorCodes::NOT_IMPLEMENTED, "HiveTextRowInputFormat::readTypes is not implemented");
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}
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void registerInputFormatHiveText(FormatFactory & factory)
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{
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factory.registerInputFormat(
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"HiveText", [](ReadBuffer & buf, const Block & sample, const RowInputFormatParams & params, const FormatSettings & settings)
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{
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return std::make_shared<HiveTextRowInputFormat>(sample, buf, params, settings);
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});
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}
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void registerFileSegmentationEngineHiveText(FormatFactory & factory)
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{
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factory.registerFileSegmentationEngine(
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"HiveText",
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[](ReadBuffer & in, DB::Memory<> & memory, size_t min_chunk_size) -> std::pair<bool, size_t> {
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return fileSegmentationEngineCSVImpl(in, memory, min_chunk_size, 0);
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});
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}
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}
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#endif
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