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57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
#pragma once
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#include <Columns/ColumnVector.h>
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#include <boost/noncopyable.hpp>
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#include <AggregateFunctions/IAggregateFunction.h>
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#include <AggregateFunctions/AggregateFunctionGroupBitmapData.h>
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#include <DataTypes/DataTypesNumber.h>
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namespace DB
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{
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/// Counts bitmap operation on numbers.
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template <typename T, typename Data>
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class AggregateFunctionBitmap final : public IAggregateFunctionDataHelper<Data, AggregateFunctionBitmap<T, Data>>
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{
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public:
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AggregateFunctionBitmap(const DataTypePtr & type)
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: IAggregateFunctionDataHelper<Data, AggregateFunctionBitmap<T, Data>>({type}, {}) {}
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String getName() const override { return Data::name(); }
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DataTypePtr getReturnType() const override
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{
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return std::make_shared<DataTypeNumber<T>>();
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}
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void add(AggregateDataPtr place, const IColumn ** columns, size_t row_num, Arena *) const override
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{
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this->data(place).rbs.add(static_cast<const ColumnVector<T> &>(*columns[0]).getData()[row_num]);
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}
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void merge(AggregateDataPtr place, ConstAggregateDataPtr rhs, Arena *) const override
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{
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this->data(place).rbs.merge(this->data(rhs).rbs);
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}
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void serialize(ConstAggregateDataPtr place, WriteBuffer & buf) const override
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{
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this->data(place).rbs.write(buf);
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}
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void deserialize(AggregateDataPtr place, ReadBuffer & buf, Arena *) const override
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{
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this->data(place).rbs.read(buf);
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}
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void insertResultInto(ConstAggregateDataPtr place, IColumn & to) const override
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{
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static_cast<ColumnVector<T> &>(to).getData().push_back(this->data(place).rbs.size());
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}
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const char * getHeaderFilePath() const override { return __FILE__; }
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};
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}
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