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70d1adfe4b
* save format string for NetException * format exceptions * format exceptions 2 * format exceptions 3 * format exceptions 4 * format exceptions 5 * format exceptions 6 * fix * format exceptions 7 * format exceptions 8 * Update MergeTreeIndexGin.cpp * Update AggregateFunctionMap.cpp * Update AggregateFunctionMap.cpp * fix
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
#include <Functions/FunctionFactory.h>
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#include <Functions/GeoHash.h>
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#include <Functions/FunctionHelpers.h>
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#include <Columns/ColumnString.h>
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#include <Columns/ColumnFixedString.h>
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#include <Columns/ColumnsNumber.h>
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#include <Columns/ColumnTuple.h>
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#include <DataTypes/DataTypeTuple.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <string>
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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_COLUMN;
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}
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namespace
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{
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// geohashDecode(string) => (lon float64, lat float64)
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class FunctionGeohashDecode : public IFunction
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{
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public:
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static constexpr auto name = "geohashDecode";
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static FunctionPtr create(ContextPtr) { return std::make_shared<FunctionGeohashDecode>(); }
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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 1; }
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bool useDefaultImplementationForConstants() const override { return true; }
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bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
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DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
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{
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validateArgumentType(*this, arguments, 0, isStringOrFixedString, "string or fixed string");
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return std::make_shared<DataTypeTuple>(
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DataTypes{std::make_shared<DataTypeFloat64>(), std::make_shared<DataTypeFloat64>()},
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Strings{"longitude", "latitude"});
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}
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template <typename ColumnTypeEncoded>
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bool tryExecute(const IColumn * encoded_column, ColumnPtr & result_column) const
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{
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const auto * encoded = checkAndGetColumn<ColumnTypeEncoded>(encoded_column);
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if (!encoded)
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return false;
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const size_t count = encoded->size();
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auto latitude = ColumnFloat64::create(count);
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auto longitude = ColumnFloat64::create(count);
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ColumnFloat64::Container & lon_data = longitude->getData();
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ColumnFloat64::Container & lat_data = latitude->getData();
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for (size_t i = 0; i < count; ++i)
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{
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std::string_view encoded_string = encoded->getDataAt(i).toView();
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geohashDecode(encoded_string.data(), encoded_string.size(), &lon_data[i], &lat_data[i]);
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}
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MutableColumns result;
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result.emplace_back(std::move(longitude));
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result.emplace_back(std::move(latitude));
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result_column = ColumnTuple::create(std::move(result));
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return true;
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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 IColumn * encoded = arguments[0].column.get();
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ColumnPtr res_column;
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if (tryExecute<ColumnString>(encoded, res_column) ||
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tryExecute<ColumnFixedString>(encoded, res_column))
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return res_column;
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throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Unsupported argument type:{} of argument of function {}",
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arguments[0].column->getName(), getName());
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}
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};
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}
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REGISTER_FUNCTION(GeohashDecode)
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{
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factory.registerFunction<FunctionGeohashDecode>();
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}
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}
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