#include #include #include #include #include #include #include namespace DB { namespace ErrorCodes { extern const int ILLEGAL_TYPE_OF_ARGUMENT; } namespace { class FunctionH3GetResolution : public IFunction { public: static constexpr auto name = "h3GetResolution"; static FunctionPtr create(const Context &) { return std::make_shared(); } std::string getName() const override { return name; } size_t getNumberOfArguments() const override { return 1; } bool useDefaultImplementationForConstants() const override { return true; } DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override { const auto * arg = arguments[0].get(); if (!WhichDataType(arg).isUInt64()) throw Exception( "Illegal type " + arg->getName() + " of argument " + std::to_string(1) + " of function " + getName() + ". Must be UInt64", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT); return std::make_shared(); } void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) const override { const auto * col_hindex = block[arguments[0]].column.get(); auto dst = ColumnVector::create(); auto & dst_data = dst->getData(); dst_data.resize(input_rows_count); for (const auto row : ext::range(0, input_rows_count)) { const UInt64 hindex = col_hindex->getUInt(row); UInt8 res = h3GetResolution(hindex); dst_data[row] = res; } block[result].column = std::move(dst); } }; } void registerFunctionH3GetResolution(FunctionFactory & factory) { factory.registerFunction(); } }