blob: 3803056123fb1cd8a3d43dd0e904f7e6589e88f0 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
#pragma once
#include <Processors/Formats/IRowInputFormat.h>
#include <Processors/Formats/ISchemaReader.h>
#include <Formats/FormatFactory.h>
#include <DataTypes/DataTypeString.h>
namespace DB
{
class ReadBuffer;
/// This format parses a sequence of Line objects separated by newlines, spaces and/or comma.
/// Each Line object is parsed as a whole to string.
/// This format can only parse a table with single field of type String.
class LineAsStringRowInputFormat final : public IRowInputFormat
{
public:
LineAsStringRowInputFormat(const Block & header_, ReadBuffer & in_, Params params_);
String getName() const override { return "LineAsStringRowInputFormat"; }
void resetParser() override;
private:
bool readRow(MutableColumns & columns, RowReadExtension & ext) override;
void readLineObject(IColumn & column);
size_t countRows(size_t max_block_size) override;
bool supportsCountRows() const override { return true; }
};
class LinaAsStringSchemaReader : public IExternalSchemaReader
{
public:
NamesAndTypesList readSchema() override
{
return {{"line", std::make_shared<DataTypeString>()}};
}
};
}
|
