Method executeImpl

src/Functions/FunctionsJSON.h:514–524

    bool useDefaultImplementationForConstants() const override { return true; }

    ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, size_t input_rows_count) const override
    {
        if (null_presence.has_null_constant)
            return result_type->createColumnConstWithDefaultValue(input_rows_count);

        auto temp_arguments = null_presence.has_nullable ? createBlockWithNestedColumns(arguments) : arguments;
        auto temporary_result = Derived::run(temp_arguments, json_return_type, input_rows_count);
        if (null_presence.has_nullable)
            return wrapInNullable(temporary_result, arguments, result_type, input_rows_count);
        return temporary_result;
    }

private:
    NullPresence null_presence;