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Added range check to function h3EdgeLengthM

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This commit is contained in:
Alexey Milovidov 2020-01-31 23:16:46 +03:00
parent d43d84e71d
commit b6761d31f3
1 changed files with 12 additions and 1 deletions
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13
dbms/src/Functions/h3EdgeLengthM.cpp
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@ -4,14 +4,22 @@
# include <DataTypes/DataTypesNumber.h>
# include <Functions/FunctionFactory.h>
# include <Functions/IFunction.h>
# include <IO/WriteHelpers.h>
# include <Common/typeid_cast.h>
# include <ext/range.h>
# include <h3api.h>
# include <constants.h>
namespace DB
{
namespace ErrorCodes
{
extern const int ARGUMENT_OUT_OF_BOUND;
}
// Average metric edge length of H3 hexagon. The edge length `e` for given resolution `res` can
// be used for converting metric search radius `radius` to hexagon search ring size `k` that is
// used by `H3kRing` function. For small enough search area simple flat approximation can be used,
@ -50,7 +58,10 @@ public:
for (const auto row : ext::range(0, input_rows_count))
{
const int resolution = col_hindex->getUInt(row);
const UInt64 resolution = col_hindex->getUInt(row);
if (resolution > MAX_H3_RES)
throw Exception("The argument 'resolution' (" + toString(resolution) + ") of function " + getName()
+ " is out of bounds because the maximum resolution in H3 library is " + toString(MAX_H3_RES), ErrorCodes::ARGUMENT_OUT_OF_BOUND);
Float64 res = edgeLengthM(resolution);