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SerializationTuple.cpp
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816 lines (703 loc) · 28.8 KB
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#include <DataTypes/Serializations/SerializationTuple.h>
#include <DataTypes/Serializations/SerializationNullable.h>
#include <DataTypes/Serializations/SerializationInfoTuple.h>
#include <DataTypes/DataTypeTuple.h>
#include <Core/Field.h>
#include <Columns/ColumnTuple.h>
#include <Common/assert_cast.h>
#include <Formats/JSONUtils.h>
#include <IO/WriteHelpers.h>
#include <IO/ReadHelpers.h>
#include <IO/ReadBufferFromString.h>
#include <IO/WriteBufferFromString.h>
namespace DB
{
namespace ErrorCodes
{
extern const int SIZES_OF_COLUMNS_IN_TUPLE_DOESNT_MATCH;
extern const int NOT_FOUND_COLUMN_IN_BLOCK;
extern const int INCORRECT_DATA;
}
static inline IColumn & extractElementColumn(IColumn & column, size_t idx)
{
return assert_cast<ColumnTuple &>(column).getColumn(idx);
}
static inline const IColumn & extractElementColumn(const IColumn & column, size_t idx)
{
return assert_cast<const ColumnTuple &>(column).getColumn(idx);
}
void SerializationTuple::serializeBinary(const Field & field, WriteBuffer & ostr, const FormatSettings & settings) const
{
const auto & tuple = field.safeGet<Tuple>();
for (size_t element_index = 0; element_index < elems.size(); ++element_index)
{
const auto & serialization = elems[element_index];
serialization->serializeBinary(tuple[element_index], ostr, settings);
}
}
void SerializationTuple::deserializeBinary(Field & field, ReadBuffer & istr, const FormatSettings & settings) const
{
const size_t size = elems.size();
field = Tuple();
Tuple & tuple = field.safeGet<Tuple>();
tuple.reserve(size);
for (size_t i = 0; i < size; ++i)
elems[i]->deserializeBinary(tuple.emplace_back(), istr, settings);
}
void SerializationTuple::serializeBinary(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings & settings) const
{
for (size_t element_index = 0; element_index < elems.size(); ++element_index)
{
const auto & serialization = elems[element_index];
serialization->serializeBinary(extractElementColumn(column, element_index), row_num, ostr, settings);
}
}
template <typename ReturnType, typename F>
static ReturnType addElementSafe(size_t num_elems, IColumn & column, F && impl)
{
static constexpr bool throw_exception = std::is_same_v<ReturnType, void>;
/// We use the assumption that tuples of zero size do not exist.
size_t old_size = column.size();
auto restore_elements = [&]()
{
for (size_t i = 0; i < num_elems; ++i)
{
auto & element_column = extractElementColumn(column, i);
if (element_column.size() > old_size)
{
chassert(element_column.size() - old_size == 1);
element_column.popBack(1);
}
}
};
try
{
if (!impl())
{
restore_elements();
return ReturnType(false);
}
assert_cast<ColumnTuple &>(column).addSize(1);
// Check that all columns now have the same size.
size_t new_size = column.size();
for (size_t i = 1; i < num_elems; ++i)
{
const auto & element_column = extractElementColumn(column, i);
if (element_column.size() != new_size)
{
// This is not a logical error because it may work with
// user-supplied data.
if constexpr (throw_exception)
throw Exception(ErrorCodes::SIZES_OF_COLUMNS_IN_TUPLE_DOESNT_MATCH,
"Cannot read a tuple because not all elements are present");
restore_elements();
return ReturnType(false);
}
}
}
catch (...)
{
restore_elements();
if constexpr (throw_exception)
throw;
return ReturnType(false);
}
return ReturnType(true);
}
void SerializationTuple::deserializeBinary(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const
{
addElementSafe<void>(elems.size(), column, [&]
{
for (size_t i = 0; i < elems.size(); ++i)
elems[i]->deserializeBinary(extractElementColumn(column, i), istr, settings);
return true;
});
}
void SerializationTuple::serializeText(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings & settings) const
{
writeChar('(', ostr);
for (size_t i = 0; i < elems.size(); ++i)
{
if (i != 0)
writeChar(',', ostr);
elems[i]->serializeTextQuoted(extractElementColumn(column, i), row_num, ostr, settings);
}
writeChar(')', ostr);
}
template <typename ReturnType>
ReturnType SerializationTuple::deserializeTextImpl(IColumn & column, ReadBuffer & istr, const FormatSettings & settings, bool whole) const
{
static constexpr bool throw_exception = std::is_same_v<ReturnType, void>;
const size_t size = elems.size();
if constexpr (throw_exception)
assertChar('(', istr);
else if (!checkChar('(', istr))
return ReturnType(false);
auto impl = [&]()
{
for (size_t i = 0; i < size; ++i)
{
skipWhitespaceIfAny(istr);
if (i != 0)
{
if constexpr (throw_exception)
assertChar(',', istr);
else if (!checkChar(',', istr))
return false;
skipWhitespaceIfAny(istr);
}
auto & element_column = extractElementColumn(column, i);
if constexpr (throw_exception)
{
if (settings.null_as_default && !isColumnNullableOrLowCardinalityNullable(element_column))
SerializationNullable::deserializeNullAsDefaultOrNestedTextQuoted(element_column, istr, settings, elems[i]);
else
elems[i]->deserializeTextQuoted(element_column, istr, settings);
}
else
{
bool ok;
if (settings.null_as_default && !isColumnNullableOrLowCardinalityNullable(element_column))
ok = SerializationNullable::tryDeserializeNullAsDefaultOrNestedTextQuoted(element_column, istr, settings, elems[i]);
else
ok = elems[i]->tryDeserializeTextQuoted(element_column, istr, settings);
if (!ok)
return false;
}
}
// Special format for one element tuple (1,)
if (1 == elems.size())
{
skipWhitespaceIfAny(istr);
// Allow both (1) and (1,)
checkChar(',', istr);
}
skipWhitespaceIfAny(istr);
if constexpr (throw_exception)
assertChar(')', istr);
else if (!checkChar(')', istr))
return false;
if (whole && !istr.eof())
{
if constexpr (throw_exception)
throwUnexpectedDataAfterParsedValue(column, istr, settings, "Tuple");
return false;
}
return true;
};
return addElementSafe<ReturnType>(elems.size(), column, impl);
}
void SerializationTuple::deserializeText(DB::IColumn & column, DB::ReadBuffer & istr, const DB::FormatSettings & settings, bool whole) const
{
deserializeTextImpl(column, istr, settings, whole);
}
bool SerializationTuple::tryDeserializeText(DB::IColumn & column, DB::ReadBuffer & istr, const DB::FormatSettings & settings, bool whole) const
{
return deserializeTextImpl<bool>(column, istr, settings, whole);
}
void SerializationTuple::serializeTextJSON(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings & settings) const
{
if (settings.json.write_named_tuples_as_objects
&& has_explicit_names)
{
writeChar('{', ostr);
bool first = true;
for (size_t i = 0; i < elems.size(); ++i)
{
const auto & element_column = extractElementColumn(column, i);
if (settings.json.skip_null_value_in_named_tuples && element_column.isNullAt(row_num))
continue;
if (!first)
writeChar(',', ostr);
writeJSONString(elems[i]->getElementName(), ostr, settings);
writeChar(':', ostr);
elems[i]->serializeTextJSON(element_column, row_num, ostr, settings);
first = false;
}
writeChar('}', ostr);
}
else
{
writeChar('[', ostr);
for (size_t i = 0; i < elems.size(); ++i)
{
if (i != 0)
writeChar(',', ostr);
elems[i]->serializeTextJSON(extractElementColumn(column, i), row_num, ostr, settings);
}
writeChar(']', ostr);
}
}
void SerializationTuple::serializeTextJSONPretty(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings & settings, size_t indent) const
{
if (settings.json.write_named_tuples_as_objects
&& has_explicit_names)
{
writeCString("{\n", ostr);
bool first = true;
for (size_t i = 0; i < elems.size(); ++i)
{
const auto & element_column = extractElementColumn(column, i);
if (settings.json.skip_null_value_in_named_tuples && element_column.isNullAt(row_num))
continue;
if (!first)
writeCString(",\n", ostr);
writeChar(settings.json.pretty_print_indent, (indent + 1) * settings.json.pretty_print_indent_multiplier, ostr);
writeJSONString(elems[i]->getElementName(), ostr, settings);
writeCString(": ", ostr);
elems[i]->serializeTextJSONPretty(extractElementColumn(column, i), row_num, ostr, settings, indent + 1);
first = false;
}
writeChar('\n', ostr);
writeChar(settings.json.pretty_print_indent, indent * settings.json.pretty_print_indent_multiplier, ostr);
writeChar('}', ostr);
}
else
{
writeCString("[\n", ostr);
for (size_t i = 0; i < elems.size(); ++i)
{
if (i != 0)
writeCString(",\n", ostr);
writeChar(settings.json.pretty_print_indent, (indent + 1) * settings.json.pretty_print_indent_multiplier, ostr);
elems[i]->serializeTextJSONPretty(extractElementColumn(column, i), row_num, ostr, settings, indent + 1);
}
writeChar('\n', ostr);
writeChar(settings.json.pretty_print_indent, indent * settings.json.pretty_print_indent_multiplier, ostr);
writeChar(']', ostr);
}
}
template <typename ReturnType>
ReturnType SerializationTuple::deserializeTupleJSONImpl(IColumn & column, ReadBuffer & istr, const FormatSettings & settings, auto && deserialize_element) const
{
static constexpr auto throw_exception = std::is_same_v<ReturnType, void>;
if (settings.json.read_named_tuples_as_objects
&& has_explicit_names)
{
skipWhitespaceIfAny(istr);
if constexpr (throw_exception)
assertChar('{', istr);
else if (!checkChar('{', istr))
return ReturnType(false);
skipWhitespaceIfAny(istr);
auto impl = [&]()
{
std::vector<UInt8> seen_elements(elems.size(), 0);
size_t processed = 0;
size_t skipped = 0;
while (!istr.eof() && *istr.position() != '}')
{
if (!settings.json.ignore_unknown_keys_in_named_tuple && processed == elems.size())
{
if constexpr (throw_exception)
throw Exception(ErrorCodes::INCORRECT_DATA, "Unexpected number of elements in named tuple. Expected no more than {} (consider enabling input_format_json_ignore_unknown_keys_in_named_tuple setting)", elems.size());
return false;
}
if (processed + skipped > 0)
{
if constexpr (throw_exception)
assertChar(',', istr);
else if (!checkChar(',', istr))
return false;
skipWhitespaceIfAny(istr);
}
std::string name;
if constexpr (throw_exception)
readDoubleQuotedString(name, istr);
else if (!tryReadDoubleQuotedString(name, istr))
return false;
skipWhitespaceIfAny(istr);
if constexpr (throw_exception)
assertChar(':', istr);
else if (!checkChar(':', istr))
return false;
skipWhitespaceIfAny(istr);
const size_t element_pos = getPositionByName(name);
if (element_pos == std::numeric_limits<size_t>::max())
{
if (settings.json.ignore_unknown_keys_in_named_tuple)
{
if constexpr (throw_exception)
skipJSONField(istr, name, settings.json);
else if (!trySkipJSONField(istr, name, settings.json))
return false;
skipWhitespaceIfAny(istr);
++skipped;
continue;
}
if constexpr (throw_exception)
throw Exception(
ErrorCodes::NOT_FOUND_COLUMN_IN_BLOCK,
"Tuple doesn't have element with name '{}', enable setting "
"input_format_json_ignore_unknown_keys_in_named_tuple",
name);
return false;
}
if (seen_elements[element_pos])
throw Exception(ErrorCodes::INCORRECT_DATA, "JSON object contains duplicate key '{}'", name);
seen_elements[element_pos] = 1;
auto & element_column = extractElementColumn(column, element_pos);
if constexpr (throw_exception)
{
try
{
deserialize_element(element_column, element_pos);
}
catch (Exception & e)
{
e.addMessage("(while reading the value of nested key " + name + ")");
throw;
}
}
else
{
if (!deserialize_element(element_column, element_pos))
return false;
}
skipWhitespaceIfAny(istr);
++processed;
}
if constexpr (throw_exception)
assertChar('}', istr);
else if (!checkChar('}', istr))
return false;
/// Check if we have missing elements.
if (processed != elems.size())
{
for (size_t element_pos = 0; element_pos != seen_elements.size(); ++element_pos)
{
if (seen_elements[element_pos])
continue;
if (!settings.json.defaults_for_missing_elements_in_named_tuple)
{
if constexpr (throw_exception)
throw Exception(
ErrorCodes::INCORRECT_DATA,
"JSON object doesn't contain tuple element {}. If you want to insert defaults in case of missing elements, "
"enable setting input_format_json_defaults_for_missing_elements_in_named_tuple",
elems[element_pos]->getElementName());
return false;
}
auto & element_column = extractElementColumn(column, element_pos);
element_column.insertDefault();
}
}
return true;
};
return addElementSafe<ReturnType>(elems.size(), column, impl);
}
skipWhitespaceIfAny(istr);
if constexpr (throw_exception)
assertChar('[', istr);
else if (!checkChar('[', istr))
return false;
skipWhitespaceIfAny(istr);
auto impl = [&]()
{
for (size_t i = 0; i < elems.size(); ++i)
{
skipWhitespaceIfAny(istr);
if (i != 0)
{
if constexpr (throw_exception)
assertChar(',', istr);
else if (!checkChar(',', istr))
return false;
skipWhitespaceIfAny(istr);
}
auto & element_column = extractElementColumn(column, i);
if constexpr (throw_exception)
deserialize_element(element_column, i);
else if (!deserialize_element(element_column, i))
return false;
}
skipWhitespaceIfAny(istr);
if constexpr (throw_exception)
assertChar(']', istr);
else if (!checkChar(']', istr))
return false;
return true;
};
return addElementSafe<ReturnType>(elems.size(), column, impl);
}
template <typename ReturnType>
ReturnType SerializationTuple::deserializeTextJSONImpl(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const
{
auto deserialize_nested = [&settings](IColumn & nested_column, ReadBuffer & buf, const SerializationPtr & nested_column_serialization) -> ReturnType
{
if constexpr (std::is_same_v<ReturnType, void>)
{
if (settings.null_as_default && !isColumnNullableOrLowCardinalityNullable(nested_column))
SerializationNullable::deserializeNullAsDefaultOrNestedTextJSON(nested_column, buf, settings, nested_column_serialization);
else
nested_column_serialization->deserializeTextJSON(nested_column, buf, settings);
}
else
{
if (settings.null_as_default && !isColumnNullableOrLowCardinalityNullable(nested_column))
return SerializationNullable::tryDeserializeNullAsDefaultOrNestedTextJSON(nested_column, buf, settings, nested_column_serialization);
return nested_column_serialization->tryDeserializeTextJSON(nested_column, buf, settings);
}
};
if (settings.json.empty_as_default)
return deserializeTupleJSONImpl<ReturnType>(column, istr, settings,
[&deserialize_nested, &istr, this](IColumn & nested_column, size_t element_pos) -> ReturnType
{
return JSONUtils::deserializeEmpyStringAsDefaultOrNested<ReturnType>(nested_column, istr,
[&deserialize_nested, element_pos, this](IColumn & nested_column_, ReadBuffer & buf) -> ReturnType
{
return deserialize_nested(nested_column_, buf, elems[element_pos]);
});
});
return deserializeTupleJSONImpl<ReturnType>(
column,
istr,
settings,
[&deserialize_nested, &istr, this](IColumn & nested_column, size_t element_pos) -> ReturnType
{ return deserialize_nested(nested_column, istr, elems[element_pos]); });
}
void SerializationTuple::deserializeTextJSON(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const
{
deserializeTextJSONImpl<void>(column, istr, settings);
}
bool SerializationTuple::tryDeserializeTextJSON(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const
{
return deserializeTextJSONImpl<bool>(column, istr, settings);
}
void SerializationTuple::serializeTextXML(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings & settings) const
{
writeCString("<tuple>", ostr);
for (size_t i = 0; i < elems.size(); ++i)
{
writeCString("<elem>", ostr);
elems[i]->serializeTextXML(extractElementColumn(column, i), row_num, ostr, settings);
writeCString("</elem>", ostr);
}
writeCString("</tuple>", ostr);
}
void SerializationTuple::serializeTextCSV(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings & settings) const
{
if (settings.csv.serialize_tuple_into_separate_columns)
{
for (size_t i = 0; i < elems.size(); ++i)
{
if (i != 0)
writeChar(settings.csv.tuple_delimiter, ostr);
elems[i]->serializeTextCSV(extractElementColumn(column, i), row_num, ostr, settings);
}
}
else
{
WriteBufferFromOwnString wb;
serializeText(column, row_num, wb, settings);
writeCSV(wb.str(), ostr);
}
}
void SerializationTuple::deserializeTextCSV(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const
{
if (settings.csv.deserialize_separate_columns_into_tuple)
{
addElementSafe<void>(elems.size(), column, [&]
{
const size_t size = elems.size();
for (size_t i = 0; i < size; ++i)
{
if (i != 0)
{
skipWhitespaceIfAny(istr);
assertChar(settings.csv.tuple_delimiter, istr);
skipWhitespaceIfAny(istr);
}
auto & element_column = extractElementColumn(column, i);
if (settings.null_as_default && !isColumnNullableOrLowCardinalityNullable(element_column))
SerializationNullable::deserializeNullAsDefaultOrNestedTextCSV(element_column, istr, settings, elems[i]);
else
elems[i]->deserializeTextCSV(element_column, istr, settings);
}
return true;
});
}
else
{
String s;
readCSV(s, istr, settings.csv);
ReadBufferFromString rb(s);
deserializeText(column, rb, settings, true);
}
}
bool SerializationTuple::tryDeserializeTextCSV(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const
{
if (settings.csv.deserialize_separate_columns_into_tuple)
{
return addElementSafe<bool>(elems.size(), column, [&]
{
const size_t size = elems.size();
for (size_t i = 0; i < size; ++i)
{
if (i != 0)
{
skipWhitespaceIfAny(istr);
if (!checkChar(settings.csv.tuple_delimiter, istr))
return false;
skipWhitespaceIfAny(istr);
}
auto & element_column = extractElementColumn(column, i);
if (settings.null_as_default && !isColumnNullableOrLowCardinalityNullable(element_column))
{
if (!SerializationNullable::tryDeserializeNullAsDefaultOrNestedTextCSV(element_column, istr, settings, elems[i]))
return false;
}
else
{
if (!elems[i]->tryDeserializeTextCSV(element_column, istr, settings))
return false;
}
}
return true;
});
}
String s;
if (!tryReadCSV(s, istr, settings.csv))
return false;
ReadBufferFromString rb(s);
return tryDeserializeText(column, rb, settings, true);
}
struct SerializeBinaryBulkStateTuple : public ISerialization::SerializeBinaryBulkState
{
std::vector<ISerialization::SerializeBinaryBulkStatePtr> states;
};
struct DeserializeBinaryBulkStateTuple : public ISerialization::DeserializeBinaryBulkState
{
std::vector<ISerialization::DeserializeBinaryBulkStatePtr> states;
ISerialization::DeserializeBinaryBulkStatePtr clone() const override
{
auto new_state = std::make_shared<DeserializeBinaryBulkStateTuple>();
new_state->states.reserve(states.size());
for (const auto & state : states)
new_state->states.push_back(state ? state->clone() : nullptr);
return new_state;
}
};
void SerializationTuple::enumerateStreams(
EnumerateStreamsSettings & settings,
const StreamCallback & callback,
const SubstreamData & data) const
{
if (elems.empty())
{
ISerialization::enumerateStreams(settings, callback, data);
return;
}
const auto * type_tuple = data.type ? &assert_cast<const DataTypeTuple &>(*data.type) : nullptr;
const auto * column_tuple = data.column ? &assert_cast<const ColumnTuple &>(*data.column) : nullptr;
const auto * info_tuple = data.serialization_info ? &assert_cast<const SerializationInfoTuple &>(*data.serialization_info) : nullptr;
const auto * tuple_deserialize_state = data.deserialize_state ? checkAndGetState<DeserializeBinaryBulkStateTuple>(data.deserialize_state) : nullptr;
for (size_t i = 0; i < elems.size(); ++i)
{
auto next_data = SubstreamData(elems[i])
.withType(type_tuple ? type_tuple->getElement(i) : nullptr)
.withColumn(column_tuple ? column_tuple->getColumnPtr(i) : nullptr)
.withSerializationInfo(info_tuple ? info_tuple->getElementInfo(i) : nullptr)
.withDeserializeState(tuple_deserialize_state ? tuple_deserialize_state->states[i] : nullptr);
elems[i]->enumerateStreams(settings, callback, next_data);
}
}
void SerializationTuple::serializeBinaryBulkStatePrefix(
const IColumn & column,
SerializeBinaryBulkSettings & settings,
SerializeBinaryBulkStatePtr & state) const
{
auto tuple_state = std::make_shared<SerializeBinaryBulkStateTuple>();
tuple_state->states.resize(elems.size());
for (size_t i = 0; i < elems.size(); ++i)
elems[i]->serializeBinaryBulkStatePrefix(extractElementColumn(column, i), settings, tuple_state->states[i]);
state = std::move(tuple_state);
}
void SerializationTuple::serializeBinaryBulkStateSuffix(
SerializeBinaryBulkSettings & settings,
SerializeBinaryBulkStatePtr & state) const
{
auto * tuple_state = checkAndGetState<SerializeBinaryBulkStateTuple>(state);
for (size_t i = 0; i < elems.size(); ++i)
elems[i]->serializeBinaryBulkStateSuffix(settings, tuple_state->states[i]);
}
void SerializationTuple::deserializeBinaryBulkStatePrefix(
DeserializeBinaryBulkSettings & settings,
DeserializeBinaryBulkStatePtr & state,
SubstreamsDeserializeStatesCache * cache) const
{
auto tuple_state = std::make_shared<DeserializeBinaryBulkStateTuple>();
tuple_state->states.resize(elems.size());
for (size_t i = 0; i < elems.size(); ++i)
elems[i]->deserializeBinaryBulkStatePrefix(settings, tuple_state->states[i], cache);
state = std::move(tuple_state);
}
void SerializationTuple::serializeBinaryBulkWithMultipleStreams(
const IColumn & column,
size_t offset,
size_t limit,
SerializeBinaryBulkSettings & settings,
SerializeBinaryBulkStatePtr & state) const
{
if (elems.empty())
{
if (WriteBuffer * stream = settings.getter(settings.path))
{
size_t size = column.size();
if (limit == 0 || offset + limit > size)
limit = size - offset;
for (size_t i = 0; i < limit; ++i)
stream->write('0');
}
return;
}
auto * tuple_state = checkAndGetState<SerializeBinaryBulkStateTuple>(state);
for (size_t i = 0; i < elems.size(); ++i)
{
const auto & element_col = extractElementColumn(column, i);
elems[i]->serializeBinaryBulkWithMultipleStreams(element_col, offset, limit, settings, tuple_state->states[i]);
}
}
void SerializationTuple::deserializeBinaryBulkWithMultipleStreams(
ColumnPtr & column,
size_t rows_offset,
size_t limit,
DeserializeBinaryBulkSettings & settings,
DeserializeBinaryBulkStatePtr & state,
SubstreamsCache * cache) const
{
if (elems.empty())
{
auto cached_column = getFromSubstreamsCache(cache, settings.path);
if (cached_column)
{
column = cached_column;
}
else if (ReadBuffer * stream = settings.getter(settings.path))
{
auto mutable_column = column->assumeMutable();
auto ignored_size = stream->tryIgnore(rows_offset + limit);
auto delta = ignored_size < rows_offset ? 0 : ignored_size - rows_offset;
typeid_cast<ColumnTuple &>(*mutable_column).addSize(delta);
column = std::move(mutable_column);
addToSubstreamsCache(cache, settings.path, column);
}
return;
}
auto * tuple_state = checkAndGetState<DeserializeBinaryBulkStateTuple>(state);
auto mutable_column = column->assumeMutable();
auto & column_tuple = assert_cast<ColumnTuple &>(*mutable_column);
settings.avg_value_size_hint = 0;
for (size_t i = 0; i < elems.size(); ++i)
elems[i]->deserializeBinaryBulkWithMultipleStreams(column_tuple.getColumnPtr(i), rows_offset, limit, settings, tuple_state->states[i], cache);
typeid_cast<ColumnTuple &>(*mutable_column).addSize(column_tuple.getColumn(0).size());
}
size_t SerializationTuple::getPositionByName(const String & name) const
{
size_t size = elems.size();
for (size_t i = 0; i < size; ++i)
if (elems[i]->getElementName() == name)
return i;
return std::numeric_limits<size_t>::max();
}
}