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#include <IO/WriteHelpers.h>
#include <IO/WriteBufferValidUTF8.h>
#include <Processors/Formats/Impl/JSONCompactEachRowRowOutputFormat.h>
#include <Formats/FormatFactory.h>
#include <Formats/registerWithNamesAndTypes.h>
#include <Formats/JSONUtils.h>
namespace DB
{
JSONCompactEachRowRowOutputFormat::JSONCompactEachRowRowOutputFormat(WriteBuffer & out_,
const Block & header_,
const FormatSettings & settings_,
bool with_names_,
bool with_types_,
bool yield_strings_)
: RowOutputFormatWithExceptionHandlerAdaptor<RowOutputFormatWithUTF8ValidationAdaptor, bool>(header_, out_, settings_.json.valid_output_on_exception, settings_.json.validate_utf8)
, settings(settings_)
, with_names(with_names_)
, with_types(with_types_)
, yield_strings(yield_strings_)
{
ostr = RowOutputFormatWithExceptionHandlerAdaptor::getWriteBufferPtr();
}
void JSONCompactEachRowRowOutputFormat::writeField(const IColumn & column, const ISerialization & serialization, size_t row_num)
{
if (yield_strings)
{
WriteBufferFromOwnString buf;
serialization.serializeText(column, row_num, buf, settings);
writeJSONString(buf.str(), *ostr, settings);
}
else
serialization.serializeTextJSON(column, row_num, *ostr, settings);
}
void JSONCompactEachRowRowOutputFormat::writeFieldDelimiter()
{
writeCString(", ", *ostr);
}
void JSONCompactEachRowRowOutputFormat::writeRowStartDelimiter()
{
writeChar('[', *ostr);
}
void JSONCompactEachRowRowOutputFormat::writeRowEndDelimiter()
{
writeCString("]\n", *ostr);
}
void JSONCompactEachRowRowOutputFormat::writeTotals(const Columns & columns, size_t row_num)
{
writeChar('\n', *ostr);
size_t columns_size = columns.size();
writeRowStartDelimiter();
for (size_t i = 0; i < columns_size; ++i)
{
if (i != 0)
writeFieldDelimiter();
writeField(*columns[i], *serializations[i], row_num);
}
writeRowEndDelimiter();
}
void JSONCompactEachRowRowOutputFormat::writeLine(const std::vector<String> & values)
{
JSONUtils::makeNamesValidJSONStrings(values, settings, settings.json.validate_utf8);
writeRowStartDelimiter();
for (size_t i = 0; i < values.size(); ++i)
{
writeChar('\"', *ostr);
writeString(values[i], *ostr);
writeChar('\"', *ostr);
if (i + 1 != values.size())
writeFieldDelimiter();
}
writeRowEndDelimiter();
}
void JSONCompactEachRowRowOutputFormat::writePrefix()
{
const auto & header = getPort(PortKind::Main).getHeader();
if (with_names)
writeLine(JSONUtils::makeNamesValidJSONStrings(header.getNames(), settings, settings.json.validate_utf8));
if (with_types)
writeLine(JSONUtils::makeNamesValidJSONStrings(header.getDataTypeNames(), settings, settings.json.validate_utf8));
}
void JSONCompactEachRowRowOutputFormat::consumeTotals(DB::Chunk chunk)
{
if (with_names)
IRowOutputFormat::consumeTotals(std::move(chunk));
}
void JSONCompactEachRowRowOutputFormat::writeSuffix()
{
if (!exception_message.empty())
{
if (haveWrittenData())
writeRowBetweenDelimiter();
writeRowStartDelimiter();
writeJSONString(exception_message, *ostr, settings);
writeRowEndDelimiter();
}
}
void JSONCompactEachRowRowOutputFormat::resetFormatterImpl()
{
RowOutputFormatWithExceptionHandlerAdaptor::resetFormatterImpl();
ostr = RowOutputFormatWithExceptionHandlerAdaptor::getWriteBufferPtr();
}
void registerOutputFormatJSONCompactEachRow(FormatFactory & factory)
{
for (bool yield_strings : {false, true})
{
auto register_func = [&](const String & format_name, bool with_names, bool with_types)
{
factory.registerOutputFormat(format_name, [yield_strings, with_names, with_types](
WriteBuffer & buf,
const Block & sample,
const FormatSettings & format_settings)
{
return std::make_shared<JSONCompactEachRowRowOutputFormat>(buf, sample, format_settings, with_names, with_types, yield_strings);
});
factory.markOutputFormatSupportsParallelFormatting(format_name);
};
registerWithNamesAndTypes(yield_strings ? "JSONCompactStringsEachRow" : "JSONCompactEachRow", register_func);
}
}
}
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