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authorvitalyisaev <[email protected]>2023-11-14 09:58:56 +0300
committervitalyisaev <[email protected]>2023-11-14 10:20:20 +0300
commitc2b2dfd9827a400a8495e172a56343462e3ceb82 (patch)
treecd4e4f597d01bede4c82dffeb2d780d0a9046bd0 /contrib/clickhouse/src/Functions/h3ToString.cpp
parentd4ae8f119e67808cb0cf776ba6e0cf95296f2df7 (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.cpp111
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