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#include <Processors/Formats/Impl/JSONColumnsBlockOutputFormatBase.h>
#include <IO/WriteHelpers.h>
#include <IO/WriteBufferValidUTF8.h>
#include <Formats/JSONUtils.h>
namespace DB
{
JSONColumnsBlockOutputFormatBase::JSONColumnsBlockOutputFormatBase(
WriteBuffer & out_, const Block & header_, const FormatSettings & format_settings_, bool validate_utf8)
: OutputFormatWithUTF8ValidationAdaptor(header_, out_, validate_utf8)
, format_settings(format_settings_)
, serializations(header_.getSerializations())
{
ostr = OutputFormatWithUTF8ValidationAdaptor::getWriteBufferPtr();
}
void JSONColumnsBlockOutputFormatBase::consume(Chunk chunk)
{
if (!mono_chunk)
{
mono_chunk = std::move(chunk);
return;
}
mono_chunk.append(chunk);
}
void JSONColumnsBlockOutputFormatBase::writeSuffix()
{
writeChunk(mono_chunk);
mono_chunk.clear();
}
void JSONColumnsBlockOutputFormatBase::writeChunk(Chunk & chunk)
{
writeChunkStart();
const auto & columns = chunk.getColumns();
for (size_t i = 0; i != columns.size(); ++i)
{
writeColumnStart(i);
writeColumn(*columns[i], *serializations[i]);
writeColumnEnd(i == columns.size() - 1);
}
written_rows += chunk.getNumRows();
writeChunkEnd();
}
void JSONColumnsBlockOutputFormatBase::writeColumnEnd(bool is_last)
{
JSONUtils::writeCompactArrayEnd(*ostr);
if (!is_last)
JSONUtils::writeFieldDelimiter(*ostr);
}
void JSONColumnsBlockOutputFormatBase::writeColumn(const IColumn & column, const ISerialization & serialization)
{
for (size_t i = 0; i != column.size(); ++i)
{
if (i != 0)
JSONUtils::writeFieldCompactDelimiter(*ostr);
serialization.serializeTextJSON(column, i, *ostr, format_settings);
}
}
}
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