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43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
#pragma once
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#include <Processors/Formats/IRowInputFormat.h>
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#include <Formats/FormatFactory.h>
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#include <IO/PeekableReadBuffer.h>
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namespace DB
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{
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class ReadBuffer;
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/// This format parses a sequence of JSON objects separated by newlines, spaces and/or comma.
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/// Each JSON object is parsed as a whole to string.
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/// This format can only parse a table with single field of type String.
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class JSONAsStringRowInputFormat : public IRowInputFormat
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{
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public:
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JSONAsStringRowInputFormat(const Block & header_, ReadBuffer & in_, Params params_);
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String getName() const override { return "JSONAsStringRowInputFormat"; }
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void resetParser() override;
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void setReadBuffer(ReadBuffer & in_) override;
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private:
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JSONAsStringRowInputFormat(const Block & header_, std::unique_ptr<PeekableReadBuffer> buf_, Params params_);
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bool readRow(MutableColumns & columns, RowReadExtension & ext) override;
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void readPrefix() override;
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void readSuffix() override;
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void readJSONObject(IColumn & column);
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std::unique_ptr<PeekableReadBuffer> buf;
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/// This flag is needed to know if data is in square brackets.
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bool data_in_square_brackets = false;
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bool allow_new_rows = true;
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};
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}
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