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#include "clickhouse_config.h"
#if USE_S2_GEOMETRY
#include <Columns/ColumnsNumber.h>
#include <DataTypes/DataTypesNumber.h>
#include <Functions/FunctionFactory.h>
#include <Common/typeid_cast.h>
#include <Common/NaNUtils.h>
#include <base/range.h>
#error #include "s2_fwd.h"
class S2CellId;
namespace DB
{
namespace ErrorCodes
{
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
extern const int ILLEGAL_COLUMN;
extern const int BAD_ARGUMENTS;
}
namespace
{
/**
* Accepts points of the form (longitude, latitude)
* Returns s2 identifier
*/
class FunctionGeoToS2 : public IFunction
{
public:
static constexpr auto name = "geoToS2";
static FunctionPtr create(ContextPtr)
{
return std::make_shared<FunctionGeoToS2>();
}
std::string getName() const override
{
return name;
}
size_t getNumberOfArguments() const override { return 2; }
bool useDefaultImplementationForConstants() const override { return true; }
bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return false; }
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
for (size_t i = 0; i < getNumberOfArguments(); ++i)
{
const auto * arg = arguments[i].get();
if (!WhichDataType(arg).isFloat64())
throw Exception(
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
"Illegal type {} of argument {} of function {}. Must be Float64",
arg->getName(), i, getName());
}
return std::make_shared<DataTypeUInt64>();
}
ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override
{
auto non_const_arguments = arguments;
for (auto & argument : non_const_arguments)
argument.column = argument.column->convertToFullColumnIfConst();
const auto * col_lon = checkAndGetColumn<ColumnFloat64>(non_const_arguments[0].column.get());
if (!col_lon)
throw Exception(
ErrorCodes::ILLEGAL_COLUMN,
"Illegal type {} of argument {} of function {}. Must be Float64",
arguments[0].type->getName(),
1,
getName());
const auto & data_col_lon = col_lon->getData();
const auto * col_lat = checkAndGetColumn<ColumnFloat64>(non_const_arguments[1].column.get());
if (!col_lat)
throw Exception(
ErrorCodes::ILLEGAL_COLUMN,
"Illegal type {} of argument {} of function {}. Must be Float64",
arguments[0].type->getName(),
2,
getName());
const auto & data_col_lat = col_lat->getData();
auto dst = ColumnVector<UInt64>::create();
auto & dst_data = dst->getData();
dst_data.resize(input_rows_count);
for (size_t row = 0; row < input_rows_count; ++row)
{
const Float64 lon = data_col_lon[row];
const Float64 lat = data_col_lat[row];
if (isNaN(lon) || isNaN(lat))
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Arguments must not be NaN");
if (!(isFinite(lon) && isFinite(lat)))
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Arguments must not be infinite");
/// S2 acceptes point as (latitude, longitude)
S2LatLng lat_lng = S2LatLng::FromDegrees(lat, lon);
if (!lat_lng.is_valid())
throw Exception(ErrorCodes::BAD_ARGUMENTS,
"Point is invalid. For valid point the latitude is between -90 and 90 degrees inclusive"
"and the longitude is between -180 and 180 degrees inclusive.");
S2CellId id(lat_lng);
dst_data[row] = id.id();
}
return dst;
}
};
}
REGISTER_FUNCTION(GeoToS2)
{
factory.registerFunction<FunctionGeoToS2>();
}
}
#endif
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