ClickHouse/dbms/src/DataTypes/DataTypeNumberBase.h

#pragma once

#include <DataTypes/IDataType.h>


namespace DB
{

/** Implements part of the IDataType interface, common to all numbers and for Date and DateTime.
  */
template <typename T>
class DataTypeNumberBase : public IDataType
{
public:
    using FieldType = T;

    std::string getName() const override { return TypeName<T>::get(); }
    const char * getFamilyName() const override { return TypeName<T>::get(); }

    bool isNumeric() const override { return true; }
    bool behavesAsNumber() const override { return true; }

    void serializeText(const IColumn & column, size_t row_num, WriteBuffer & ostr) const override;
    void serializeTextEscaped(const IColumn & column, size_t row_num, WriteBuffer & ostr) const override;
    void deserializeTextEscaped(IColumn & column, ReadBuffer & istr) const override;
    void serializeTextQuoted(const IColumn & column, size_t row_num, WriteBuffer & ostr) const override;
    void deserializeTextQuoted(IColumn & column, ReadBuffer & istr) const override;
    void serializeTextJSON(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettingsJSON & settings) const override;
    void deserializeTextJSON(IColumn & column, ReadBuffer & istr) const override;
    void serializeTextCSV(const IColumn & column, size_t row_num, WriteBuffer & ostr) const override;
    void deserializeTextCSV(IColumn & column, ReadBuffer & istr, const char delimiter) const override;
    size_t getSizeOfField() const override { return sizeof(FieldType); }
    Field getDefault() const override;

    /** Format is platform-dependent. */

    void serializeBinary(const Field & field, WriteBuffer & ostr) const override;
    void deserializeBinary(Field & field, ReadBuffer & istr) const override;
    void serializeBinary(const IColumn & column, size_t row_num, WriteBuffer & ostr) const override;
    void deserializeBinary(IColumn & column, ReadBuffer & istr) const override;
    void serializeBinaryBulk(const IColumn & column, WriteBuffer & ostr, size_t offset, size_t limit) const override;
    void deserializeBinaryBulk(IColumn & column, ReadBuffer & istr, size_t limit, double avg_value_size_hint) const override;

    ColumnPtr createColumn() const override;
};

}