diff options
| author | vitalyisaev <[email protected]> | 2023-11-14 09:58:56 +0300 |
|---|---|---|
| committer | vitalyisaev <[email protected]> | 2023-11-14 10:20:20 +0300 |
| commit | c2b2dfd9827a400a8495e172a56343462e3ceb82 (patch) | |
| tree | cd4e4f597d01bede4c82dffeb2d780d0a9046bd0 /contrib/clickhouse/src/Functions/h3ToString.cpp | |
| parent | d4ae8f119e67808cb0cf776ba6e0cf95296f2df7 (diff) | |
YQ Connector: move tests from yql to ydb (OSS)
Перенос папки с тестами на Коннектор из папки yql в папку ydb (синхронизируется с github).
Diffstat (limited to 'contrib/clickhouse/src/Functions/h3ToString.cpp')
| -rw-r--r-- | contrib/clickhouse/src/Functions/h3ToString.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/contrib/clickhouse/src/Functions/h3ToString.cpp b/contrib/clickhouse/src/Functions/h3ToString.cpp new file mode 100644 index 00000000000..a70f5ae1495 --- /dev/null +++ b/contrib/clickhouse/src/Functions/h3ToString.cpp @@ -0,0 +1,111 @@ +#include "clickhouse_config.h" + +#if USE_H3 + +#include <Columns/ColumnString.h> +#include <Columns/ColumnsNumber.h> +#include <DataTypes/DataTypeString.h> +#include <Functions/FunctionFactory.h> +#include <Functions/IFunction.h> +#include <Common/typeid_cast.h> + +#include <h3api.h> + +#define H3_INDEX_STRING_LENGTH 17 // includes \0 terminator + +namespace DB +{ +namespace ErrorCodes +{ + extern const int ILLEGAL_TYPE_OF_ARGUMENT; + extern const int ILLEGAL_COLUMN; +} + +namespace +{ + +class FunctionH3ToString : public IFunction +{ +public: + static constexpr auto name = "h3ToString"; + + static FunctionPtr create(ContextPtr) { return std::make_shared<FunctionH3ToString>(); } + + std::string getName() const override { return name; } + + size_t getNumberOfArguments() const override { return 1; } + + bool useDefaultImplementationForConstants() const override { return true; } + + bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; } + + DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override + { + const auto * arg = arguments[0].get(); + if (!WhichDataType(arg).isUInt64()) + throw Exception( + ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, + "Illegal type {} of argument {} of function {}. Must be UInt64", + arg->getName(), 1, getName()); + + return std::make_shared<DataTypeString>(); + } + + 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 * column = checkAndGetColumn<ColumnUInt64>(non_const_arguments[0].column.get()); + if (!column) + throw Exception( + ErrorCodes::ILLEGAL_COLUMN, + "Illegal type {} of argument {} of function {}. Must be UInt64.", + arguments[0].type->getName(), + 1, + getName()); + + const auto & data = column->getData(); + + + auto col_res = ColumnString::create(); + auto & vec_res = col_res->getChars(); + auto & vec_offsets = col_res->getOffsets(); + + vec_offsets.resize(input_rows_count); + vec_res.resize_fill(input_rows_count * H3_INDEX_STRING_LENGTH, '\0'); + + char * begin = reinterpret_cast<char *>(vec_res.data()); + char * pos = begin; + + for (size_t row = 0; row < input_rows_count; ++row) + { + const UInt64 hindex = data[row]; + + if (!isValidCell(hindex)) + throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Invalid H3 index: {}", hindex); + + h3ToString(hindex, pos, H3_INDEX_STRING_LENGTH); + + // move to end of the index + while (*pos != '\0') + pos++; + + vec_offsets[row] = ++pos - begin; + } + vec_res.resize(pos - begin); + return col_res; + } +}; + +} + +REGISTER_FUNCTION(H3ToString) +{ + factory.registerFunction<FunctionH3ToString>(); +} + +} + +#endif |
