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87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
#include <AggregateFunctions/AggregateFunctionSimpleLinearRegression.h>
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#include <AggregateFunctions/AggregateFunctionFactory.h>
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#include <AggregateFunctions/FactoryHelpers.h>
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#include <Core/TypeListNumber.h>
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#include "registerAggregateFunctions.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 ILLEGAL_TYPE_OF_ARGUMENT;
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}
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namespace
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{
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AggregateFunctionPtr createAggregateFunctionSimpleLinearRegression(
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const String & name,
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const DataTypes & arguments,
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const Array & params
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)
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{
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assertNoParameters(name, params);
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assertBinary(name, arguments);
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const IDataType * x_arg = arguments.front().get();
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WhichDataType which_x = x_arg;
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const IDataType * y_arg = arguments.back().get();
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WhichDataType which_y = y_arg;
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#define FOR_LEASTSQR_TYPES_2(M, T) \
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M(T, UInt8) \
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M(T, UInt16) \
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M(T, UInt32) \
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M(T, UInt64) \
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M(T, Int8) \
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M(T, Int16) \
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M(T, Int32) \
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M(T, Int64) \
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M(T, Float32) \
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M(T, Float64)
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#define FOR_LEASTSQR_TYPES(M) \
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FOR_LEASTSQR_TYPES_2(M, UInt8) \
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FOR_LEASTSQR_TYPES_2(M, UInt16) \
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FOR_LEASTSQR_TYPES_2(M, UInt32) \
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FOR_LEASTSQR_TYPES_2(M, UInt64) \
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FOR_LEASTSQR_TYPES_2(M, Int8) \
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FOR_LEASTSQR_TYPES_2(M, Int16) \
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FOR_LEASTSQR_TYPES_2(M, Int32) \
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FOR_LEASTSQR_TYPES_2(M, Int64) \
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FOR_LEASTSQR_TYPES_2(M, Float32) \
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FOR_LEASTSQR_TYPES_2(M, Float64)
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#define DISPATCH(T1, T2) \
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if (which_x.idx == TypeIndex::T1 && which_y.idx == TypeIndex::T2) \
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return std::make_shared<AggregateFunctionSimpleLinearRegression<T1, T2>>(/* NOLINT */ \
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arguments, \
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params \
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);
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FOR_LEASTSQR_TYPES(DISPATCH)
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#undef FOR_LEASTSQR_TYPES_2
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#undef FOR_LEASTSQR_TYPES
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#undef DISPATCH
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throw Exception(
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"Illegal types ("
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+ x_arg->getName() + ", " + y_arg->getName()
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+ ") of arguments of aggregate function " + name
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+ ", must be Native Ints, Native UInts or Floats",
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT
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);
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}
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}
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void registerAggregateFunctionSimpleLinearRegression(AggregateFunctionFactory & factory)
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{
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factory.registerFunction("simpleLinearRegression", createAggregateFunctionSimpleLinearRegression);
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}
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}
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