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https://github.com/ClickHouse/ClickHouse.git
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117 lines
3.2 KiB
C++
117 lines
3.2 KiB
C++
#if !defined(ARCADIA_BUILD)
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# include "config_functions.h"
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#endif
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#if USE_S2_GEOMETRY
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#include <Columns/ColumnsNumber.h>
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#include <Columns/ColumnTuple.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <DataTypes/DataTypeTuple.h>
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#include <Functions/FunctionFactory.h>
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#include <Common/typeid_cast.h>
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#include <common/range.h>
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#include "s2_fwd.h"
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class S2CellId;
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int ILLEGAL_TYPE_OF_ARGUMENT;
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extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
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}
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namespace
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{
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class FunctionS2RectIntersection : public IFunction
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{
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public:
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static constexpr auto name = "S2RectIntersection";
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static FunctionPtr create(ContextPtr)
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{
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return std::make_shared<FunctionS2RectIntersection>();
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}
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std::string getName() const override
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{
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return name;
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}
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size_t getNumberOfArguments() const override { return 4; }
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bool useDefaultImplementationForConstants() const override { return true; }
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DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
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{
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for (size_t i = 0; i < getNumberOfArguments(); ++i)
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{
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const auto * arg = arguments[i].get();
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if (!WhichDataType(arg).isUInt64()) {
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throw Exception(
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
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"Illegal type {} of argument {} of function {}. Must be UInt64",
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arg->getName(), i, getName());
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}
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}
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DataTypePtr element = std::make_shared<DataTypeUInt64>();
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return std::make_shared<DataTypeTuple>(DataTypes{element, element});
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}
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override
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{
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const auto * col_lo1 = arguments[0].column.get();
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const auto * col_hi1 = arguments[1].column.get();
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const auto * col_lo2 = arguments[2].column.get();
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const auto * col_hi2 = arguments[3].column.get();
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auto col_res_first = ColumnUInt64::create();
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auto col_res_second = ColumnUInt64::create();
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auto & vec_res_first = col_res_first->getData();
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vec_res_first.reserve(input_rows_count);
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auto & vec_res_second = col_res_second->getData();
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vec_res_second.reserve(input_rows_count);
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for (const auto row : collections::range(0, input_rows_count))
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{
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const UInt64 lo1 = col_lo1->getUInt(row);
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const UInt64 hi1 = col_hi1->getUInt(row);
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const UInt64 lo2 = col_lo2->getUInt(row);
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const UInt64 hi2 = col_hi2->getUInt(row);
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S2LatLngRect rect1(S2CellId(lo1).ToLatLng(), S2CellId(hi1).ToLatLng());
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S2LatLngRect rect2(S2CellId(lo2).ToLatLng(), S2CellId(hi2).ToLatLng());
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S2LatLngRect rect_intersection = rect1.Intersection(rect2);
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vec_res_first.emplace_back(S2CellId(rect_intersection.lo()).id());
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vec_res_second.emplace_back(S2CellId(rect_intersection.hi()).id());
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}
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return ColumnTuple::create(Columns{std::move(col_res_first), std::move(col_res_second)});
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}
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};
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}
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void registerFunctionS2RectIntersection(FunctionFactory & factory)
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{
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factory.registerFunction<FunctionS2RectIntersection>();
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}
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}
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#endif
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