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38 lines
1.4 KiB
C++
38 lines
1.4 KiB
C++
#include <Common/FieldVisitorSum.h>
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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 LOGICAL_ERROR;
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}
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FieldVisitorSum::FieldVisitorSum(const Field & rhs_) : rhs(rhs_) {}
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// We can add all ints as unsigned regardless of their actual signedness.
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bool FieldVisitorSum::operator() (Int64 & x) const { return this->operator()(reinterpret_cast<UInt64 &>(x)); }
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bool FieldVisitorSum::operator() (UInt64 & x) const
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{
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x += rhs.reinterpret<UInt64>();
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return x != 0;
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}
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bool FieldVisitorSum::operator() (Float64 & x) const { x += get<Float64>(rhs); return x != 0; }
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bool FieldVisitorSum::operator() (Null &) const { throw Exception("Cannot sum Nulls", ErrorCodes::LOGICAL_ERROR); }
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bool FieldVisitorSum::operator() (String &) const { throw Exception("Cannot sum Strings", ErrorCodes::LOGICAL_ERROR); }
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bool FieldVisitorSum::operator() (Array &) const { throw Exception("Cannot sum Arrays", ErrorCodes::LOGICAL_ERROR); }
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bool FieldVisitorSum::operator() (Tuple &) const { throw Exception("Cannot sum Tuples", ErrorCodes::LOGICAL_ERROR); }
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bool FieldVisitorSum::operator() (Map &) const { throw Exception("Cannot sum Maps", ErrorCodes::LOGICAL_ERROR); }
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bool FieldVisitorSum::operator() (UUID &) const { throw Exception("Cannot sum UUIDs", ErrorCodes::LOGICAL_ERROR); }
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bool FieldVisitorSum::operator() (AggregateFunctionStateData &) const
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{
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throw Exception("Cannot sum AggregateFunctionStates", ErrorCodes::LOGICAL_ERROR);
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}
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}
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