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60 lines
2.5 KiB
C++
60 lines
2.5 KiB
C++
#pragma once
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#include <DataTypes/DataTypeWithSimpleSerialization.h>
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#include <Core/Field.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int NOT_IMPLEMENTED;
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}
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/** The base class for data types that do not support serialization and deserialization,
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* but arise only as an intermediate result of the calculations.
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*
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* That is, this class is used just to distinguish the corresponding data type from the others.
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*/
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class IDataTypeDummy : public DataTypeWithSimpleSerialization
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{
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private:
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[[noreturn]] void throwNoSerialization() const
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{
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throw Exception("Serialization is not implemented for data type " + getName(), ErrorCodes::NOT_IMPLEMENTED);
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}
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public:
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void serializeBinary(const Field &, WriteBuffer &) const override { throwNoSerialization(); }
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void deserializeBinary(Field &, ReadBuffer &) const override { throwNoSerialization(); }
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void serializeBinary(const IColumn &, size_t, WriteBuffer &) const override { throwNoSerialization(); }
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void deserializeBinary(IColumn &, ReadBuffer &) const override { throwNoSerialization(); }
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void serializeBinaryBulk(const IColumn &, WriteBuffer &, size_t, size_t) const override { throwNoSerialization(); }
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void deserializeBinaryBulk(IColumn &, ReadBuffer &, size_t, double) const override { throwNoSerialization(); }
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void serializeText(const IColumn &, size_t, WriteBuffer &, const FormatSettings &) const override { throwNoSerialization(); }
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void deserializeText(IColumn &, ReadBuffer &, const FormatSettings &) const override { throwNoSerialization(); }
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void serializeProtobuf(const IColumn &, size_t, ProtobufWriter &, size_t &) const override { throwNoSerialization(); }
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void deserializeProtobuf(IColumn &, ProtobufReader &, bool, bool &) const override { throwNoSerialization(); }
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MutableColumnPtr createColumn() const override
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{
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throw Exception("Method createColumn() is not implemented for data type " + getName(), ErrorCodes::NOT_IMPLEMENTED);
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}
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Field getDefault() const override
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{
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throw Exception("Method getDefault() is not implemented for data type " + getName(), ErrorCodes::NOT_IMPLEMENTED);
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}
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void insertDefaultInto(IColumn &) const override
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{
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throw Exception("Method insertDefaultInto() is not implemented for data type " + getName(), ErrorCodes::NOT_IMPLEMENTED);
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}
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bool haveSubtypes() const override { return false; }
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bool cannotBeStoredInTables() const override { return true; }
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};
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}
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