mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-11 08:52:06 +00:00
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
#include <Columns/ColumnsNumber.h>
|
|
#include <DataTypes/DataTypesNumber.h>
|
|
#include <Functions/FunctionFactory.h>
|
|
#include <Functions/IFunction.h>
|
|
#include <Common/typeid_cast.h>
|
|
#include <ext/range.h>
|
|
|
|
#include <h3api.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
namespace ErrorCodes
|
|
{
|
|
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
|
|
}
|
|
class FunctionH3ToParent : public IFunction
|
|
{
|
|
public:
|
|
static constexpr auto name = "h3ToParent";
|
|
|
|
static FunctionPtr create(const Context &) { return std::make_shared<FunctionH3ToParent>(); }
|
|
|
|
std::string getName() const override { return name; }
|
|
|
|
size_t getNumberOfArguments() const override { return 2; }
|
|
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);
|
|
|
|
arg = arguments[1].get();
|
|
if (!WhichDataType(arg).isUInt8())
|
|
throw Exception(
|
|
"Illegal type " + arg->getName() + " of argument " + std::to_string(2) + " of function " + getName() + ". Must be UInt8",
|
|
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
|
|
|
|
return std::make_shared<DataTypeUInt64>();
|
|
}
|
|
|
|
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
|
|
{
|
|
const auto * col_hindex = block.getByPosition(arguments[0]).column.get();
|
|
const auto * col_resolution = block.getByPosition(arguments[1]).column.get();
|
|
|
|
auto dst = ColumnVector<UInt64>::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);
|
|
const UInt8 resolution = col_resolution->getUInt(row);
|
|
|
|
UInt64 res = h3ToParent(hindex, resolution);
|
|
|
|
dst_data[row] = res;
|
|
}
|
|
|
|
block.getByPosition(result).column = std::move(dst);
|
|
}
|
|
};
|
|
|
|
|
|
void registerFunctionH3ToParent(FunctionFactory & factory)
|
|
{
|
|
factory.registerFunction<FunctionH3ToParent>();
|
|
}
|
|
|
|
}
|