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Copy pathdata_type_variant.cpp
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252 lines (219 loc) · 10.1 KB
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
// This file is copied from
// https://github.com/ClickHouse/ClickHouse/blob/master/src/DataTypes/DataTypeObject.cpp
// and modified by Doris
#include "core/data_type/data_type_variant.h"
#include <gen_cpp/data.pb.h>
#include <string.h>
#include <cassert>
#include <memory>
#include <utility>
#include <vector>
#include "agent/be_exec_version_manager.h"
#include "core/assert_cast.h"
#include "core/column/column.h"
#include "core/column/column_variant.h"
#include "core/data_type/data_type.h"
#include "core/data_type/data_type_factory.hpp"
#include "core/typeid_cast.h"
#include "core/types.h"
#include "util/json/path_in_data.h"
#include "util/string_util.h"
namespace doris {
class IColumn;
} // namespace doris
namespace doris {
DataTypeVariant::DataTypeVariant(int32_t max_subcolumns_count)
: DataTypeVariant(max_subcolumns_count, false) {}
DataTypeVariant::DataTypeVariant(int32_t max_subcolumns_count, bool enable_doc_mode)
: _max_subcolumns_count(max_subcolumns_count), _enable_doc_mode(enable_doc_mode) {
name = fmt::format("Variant(max subcolumns count = {}, enable doc mode = {})",
max_subcolumns_count, enable_doc_mode);
}
bool DataTypeVariant::equals(const IDataType& rhs) const {
auto rhs_type = typeid_cast<const DataTypeVariant*>(&rhs);
return rhs_type && _max_subcolumns_count == rhs_type->variant_max_subcolumns_count() &&
_enable_doc_mode == rhs_type->enable_doc_mode();
}
int64_t DataTypeVariant::get_uncompressed_serialized_bytes(const IColumn& column,
int be_exec_version) const {
const auto* column_variant = assert_cast<const ColumnVariant*>(&column);
MutableColumnPtr finalized_column;
if (!column_variant->is_finalized()) {
// Local exchange can share the same block across downstream tasks. Serialize a private
// finalized copy so serialization never mutates shared variant columns.
finalized_column = column_variant->clone_finalized();
column_variant = assert_cast<const ColumnVariant*>(finalized_column.get());
}
const auto& subcolumns = column_variant->get_subcolumns();
size_t size = 0;
size += sizeof(uint32_t);
for (const auto& entry : subcolumns) {
auto type = entry->data.get_least_common_type();
if (type->get_primitive_type() == INVALID_TYPE) {
continue;
}
PColumnMeta column_meta_pb;
column_meta_pb.set_name(entry->path.get_path());
entry->path.to_protobuf(column_meta_pb.mutable_column_path(), -1 /*not used here*/);
type->to_pb_column_meta(&column_meta_pb);
std::string meta_binary;
column_meta_pb.SerializeToString(&meta_binary);
size += sizeof(uint32_t);
size += meta_binary.size();
size += type->get_uncompressed_serialized_bytes(entry->data.get_finalized_column(),
be_exec_version);
}
// serialize num of rows, only take effect when subcolumns empty
size += sizeof(uint32_t);
// sparse column
// TODO make compability with sparse column
size += ColumnVariant::get_binary_column_type()->get_uncompressed_serialized_bytes(
*column_variant->get_sparse_column(), be_exec_version);
size += ColumnVariant::get_binary_column_type()->get_uncompressed_serialized_bytes(
*column_variant->get_doc_value_column(), be_exec_version);
return size;
}
char* DataTypeVariant::serialize(const IColumn& column, char* buf, int be_exec_version) const {
const auto* column_variant = assert_cast<const ColumnVariant*>(&column);
MutableColumnPtr finalized_column;
if (!column_variant->is_finalized()) {
// Local exchange can share the same block across downstream tasks. Serialize a private
// finalized copy so serialization never mutates shared variant columns.
finalized_column = column_variant->clone_finalized();
column_variant = assert_cast<const ColumnVariant*>(finalized_column.get());
}
#ifndef NDEBUG
// DCHECK size
column_variant->check_consistency();
#endif
const auto& subcolumns = column_variant->get_subcolumns();
char* size_pos = buf;
buf += sizeof(uint32_t);
size_t num_of_columns = 0;
// 2. serialize each subcolumn in a loop
for (const auto& entry : subcolumns) {
// 2.1 serialize subcolumn column meta pb (path and type)
auto type = entry->data.get_least_common_type();
if (type->get_primitive_type() == INVALID_TYPE) {
continue;
}
++num_of_columns;
PColumnMeta column_meta_pb;
column_meta_pb.set_name(entry->path.get_path());
entry->path.to_protobuf(column_meta_pb.mutable_column_path(), -1 /*not used here*/);
type->to_pb_column_meta(&column_meta_pb);
std::string meta_binary;
column_meta_pb.SerializeToString(&meta_binary);
// Safe cast
unaligned_store<uint32_t>(buf, static_cast<UInt32>(meta_binary.size()));
buf += sizeof(uint32_t);
memcpy(buf, meta_binary.data(), meta_binary.size());
buf += meta_binary.size();
// 2.2 serialize subcolumn
buf = type->serialize(entry->data.get_finalized_column(), buf, be_exec_version);
}
// serialize num of subcolumns
// Safe case
unaligned_store<uint32_t>(size_pos, static_cast<UInt32>(num_of_columns));
// serialize num of rows, only take effect when subcolumns empty
unaligned_store<uint32_t>(buf, static_cast<UInt32>(column_variant->rows()));
buf += sizeof(uint32_t);
// serialize sparse column
// TODO make compability with sparse column
buf = ColumnVariant::get_binary_column_type()->serialize(*column_variant->get_sparse_column(),
buf, be_exec_version);
buf = ColumnVariant::get_binary_column_type()->serialize(
*column_variant->get_doc_value_column(), buf, be_exec_version);
return buf;
}
Field DataTypeVariant::get_field(const TExprNode& node) const {
if (node.__isset.string_literal) {
return Field::create_field<TYPE_STRING>(node.string_literal.value);
}
if (node.node_type == TExprNodeType::NULL_LITERAL) {
return {};
}
std::stringstream error_string;
node.printTo(error_string);
throw doris::Exception(ErrorCode::INTERNAL_ERROR, "Unkown literal {}", error_string.str());
return {};
}
const char* DataTypeVariant::deserialize(const char* buf, MutableColumnPtr* column,
int be_exec_version) const {
auto column_variant = assert_cast<ColumnVariant*>(column->get());
// 1. deserialize num of subcolumns
uint32_t num_subcolumns = unaligned_load<uint32_t>(buf);
buf += sizeof(uint32_t);
// 2. deserialize each subcolumn in a loop
for (uint32_t i = 0; i < num_subcolumns; i++) {
// 2.1 deserialize subcolumn column path (str size + str data)
auto size = unaligned_load<uint32_t>(buf);
buf += sizeof(uint32_t);
std::string meta_binary {buf, size};
buf += size;
PColumnMeta column_meta_pb;
column_meta_pb.ParseFromString(meta_binary);
// 2.2 deserialize subcolumn
auto type = DataTypeFactory::instance().create_data_type(column_meta_pb);
MutableColumnPtr sub_column = type->create_column();
buf = type->deserialize(buf, &sub_column, be_exec_version);
PathInData key;
if (column_meta_pb.has_column_path()) {
// init from path pb
key.from_protobuf(column_meta_pb.column_path());
} else if (!column_meta_pb.name().empty()) {
// init from name for compatible
key = PathInData {column_meta_pb.name()};
}
// add subcolumn to column_variant
column_variant->add_sub_column(key, std::move(sub_column), type);
}
size_t num_rows = 0;
// serialize num of rows, only take effect when subcolumns empty
num_rows = unaligned_load<uint32_t>(buf);
buf += sizeof(uint32_t);
// deserialize sparse column
MutableColumnPtr sparse_column = ColumnVariant::get_binary_column_type()->create_column();
buf = ColumnVariant::get_binary_column_type()->deserialize(buf, &sparse_column,
be_exec_version);
column_variant->set_sparse_column(std::move(sparse_column));
if (column_variant->get_subcolumn({})) {
column_variant->get_subcolumn({})->resize(num_rows);
}
MutableColumnPtr doc_value_column = ColumnVariant::get_binary_column_type()->create_column();
buf = ColumnVariant::get_binary_column_type()->deserialize(buf, &doc_value_column,
be_exec_version);
column_variant->set_doc_value_column(std::move(doc_value_column));
column_variant->set_num_rows(num_rows);
column_variant->finalize();
#ifndef NDEBUG
// DCHECK size
column_variant->check_consistency();
#endif
return buf;
}
void DataTypeVariant::to_pb_column_meta(PColumnMeta* col_meta) const {
IDataType::to_pb_column_meta(col_meta);
col_meta->set_variant_max_subcolumns_count(_max_subcolumns_count);
col_meta->set_variant_enable_doc_mode(_enable_doc_mode);
}
MutableColumnPtr DataTypeVariant::create_column() const {
return ColumnVariant::create(_max_subcolumns_count, _enable_doc_mode);
}
} // namespace doris