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https://github.com/ClickHouse/ClickHouse.git
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18e036d19b
Improved matching enum data types to protobuf enum type. Fixed serialization of the Map data type. Omitted values are now set by default.
53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
#pragma once
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#if !defined(ARCADIA_BUILD)
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# include "config_formats.h"
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#endif
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#if USE_PROTOBUF
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# include <Columns/IColumn.h>
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namespace google::protobuf { class Descriptor; }
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namespace DB
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{
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class ProtobufReader;
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class ProtobufWriter;
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class IDataType;
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using DataTypePtr = std::shared_ptr<const IDataType>;
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using DataTypes = std::vector<DataTypePtr>;
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/// Utility class, does all the work for serialization in the Protobuf format.
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class ProtobufSerializer
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{
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public:
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virtual ~ProtobufSerializer() = default;
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virtual void setColumns(const ColumnPtr * columns, size_t num_columns) = 0;
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virtual void writeRow(size_t row_num) = 0;
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virtual void setColumns(const MutableColumnPtr * columns, size_t num_columns) = 0;
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virtual void readRow(size_t row_num) = 0;
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virtual void insertDefaults(size_t row_num) = 0;
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static std::unique_ptr<ProtobufSerializer> create(
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const Strings & column_names,
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const DataTypes & data_types,
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std::vector<size_t> & missing_column_indices,
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const google::protobuf::Descriptor & message_descriptor,
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bool with_length_delimiter,
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ProtobufReader & reader);
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static std::unique_ptr<ProtobufSerializer> create(
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const Strings & column_names,
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const DataTypes & data_types,
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const google::protobuf::Descriptor & message_descriptor,
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bool with_length_delimiter,
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ProtobufWriter & writer);
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};
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}
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#endif
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