mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-12 17:32:32 +00:00
4088c0a7f3
Automated register all functions with below naming convention by iterating through the symbols: void DB::registerXXX(DB::FunctionFactory &)
123 lines
3.7 KiB
C++
123 lines
3.7 KiB
C++
#include <Functions/FunctionFactory.h>
|
|
#include <Functions/geometryConverters.h>
|
|
|
|
#include <boost/geometry.hpp>
|
|
#include <boost/geometry/geometries/point_xy.hpp>
|
|
#include <boost/geometry/geometries/polygon.hpp>
|
|
|
|
#include <Common/logger_useful.h>
|
|
|
|
#include <Columns/ColumnArray.h>
|
|
#include <Columns/ColumnTuple.h>
|
|
#include <Columns/ColumnConst.h>
|
|
#include <DataTypes/DataTypeArray.h>
|
|
#include <DataTypes/DataTypeTuple.h>
|
|
#include <DataTypes/DataTypeCustomGeo.h>
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
namespace DB
|
|
{
|
|
|
|
namespace ErrorCodes
|
|
{
|
|
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
|
|
}
|
|
|
|
|
|
template <typename Point>
|
|
class FunctionPolygonsUnion : public IFunction
|
|
{
|
|
public:
|
|
static inline const char * name;
|
|
|
|
explicit FunctionPolygonsUnion() = default;
|
|
|
|
static FunctionPtr create(ContextPtr)
|
|
{
|
|
return std::make_shared<FunctionPolygonsUnion>();
|
|
}
|
|
|
|
String getName() const override
|
|
{
|
|
return name;
|
|
}
|
|
|
|
bool isVariadic() const override
|
|
{
|
|
return false;
|
|
}
|
|
|
|
size_t getNumberOfArguments() const override
|
|
{
|
|
return 2;
|
|
}
|
|
|
|
DataTypePtr getReturnTypeImpl(const DataTypes &) const override
|
|
{
|
|
return DataTypeFactory::instance().get("MultiPolygon");
|
|
}
|
|
|
|
bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
|
|
|
|
ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & /*result_type*/, size_t input_rows_count) const override
|
|
{
|
|
MultiPolygonSerializer<Point> serializer;
|
|
|
|
callOnTwoGeometryDataTypes<Point>(arguments[0].type, arguments[1].type, [&](const auto & left_type, const auto & right_type)
|
|
{
|
|
using LeftConverterType = std::decay_t<decltype(left_type)>;
|
|
using RightConverterType = std::decay_t<decltype(right_type)>;
|
|
|
|
using LeftConverter = typename LeftConverterType::Type;
|
|
using RightConverter = typename RightConverterType::Type;
|
|
|
|
if constexpr (std::is_same_v<ColumnToPointsConverter<Point>, LeftConverter> || std::is_same_v<ColumnToPointsConverter<Point>, RightConverter>)
|
|
throw Exception(fmt::format("Any argument of function {} must not be Point", getName()), ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
|
|
else
|
|
{
|
|
auto first = LeftConverter::convert(arguments[0].column->convertToFullColumnIfConst());
|
|
auto second = RightConverter::convert(arguments[1].column->convertToFullColumnIfConst());
|
|
|
|
/// We are not interested in some pitfalls in third-party libraries
|
|
/// NOLINTNEXTLINE(clang-analyzer-core.uninitialized.Assign)
|
|
for (size_t i = 0; i < input_rows_count; ++i)
|
|
{
|
|
/// Orient the polygons correctly.
|
|
boost::geometry::correct(first[i]);
|
|
boost::geometry::correct(second[i]);
|
|
|
|
MultiPolygon<Point> polygons_union{};
|
|
/// Main work here.
|
|
boost::geometry::union_(first[i], second[i], polygons_union);
|
|
|
|
serializer.add(polygons_union);
|
|
}
|
|
}
|
|
});
|
|
|
|
return serializer.finalize();
|
|
}
|
|
|
|
bool useDefaultImplementationForConstants() const override
|
|
{
|
|
return true;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
const char * FunctionPolygonsUnion<CartesianPoint>::name = "polygonsUnionCartesian";
|
|
|
|
template <>
|
|
const char * FunctionPolygonsUnion<SphericalPoint>::name = "polygonsUnionSpherical";
|
|
|
|
|
|
REGISTER_FUNCTION(PolygonsUnion)
|
|
{
|
|
factory.registerFunction<FunctionPolygonsUnion<CartesianPoint>>();
|
|
factory.registerFunction<FunctionPolygonsUnion<SphericalPoint>>();
|
|
}
|
|
|
|
}
|