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479 lines
19 KiB
C++
479 lines
19 KiB
C++
#pragma once
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#include <DB/DataTypes/DataTypesNumberFixed.h>
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#include <DB/DataTypes/DataTypeDate.h>
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#include <DB/DataTypes/DataTypeDateTime.h>
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#include <DB/DataTypes/DataTypeArray.h>
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#include <DB/Columns/ColumnConst.h>
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#include <DB/Columns/ColumnArray.h>
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#include <DB/Functions/IFunction.h>
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namespace DB
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{
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/** Функции работы с датой и временем.
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*
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* toYear, toMonth, toDayOfMonth, toDayOfWeek, toHour, toMinute, toSecond,
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* toMonday, toStartOfMonth, toStartOfYear, toStartOfMinute, toStartOfHour
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* toTime,
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* now
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* TODO: makeDate, makeDateTime
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*
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* (toDate - расположена в файле FunctionsConversion.h)
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*
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* Возвращаемые типы:
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* toYear -> UInt16
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* toMonth, toDayOfMonth, toDayOfWeek, toHour, toMinute, toSecond -> UInt8
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* toMonday, toStartOfMonth, toStartOfYear -> Date
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* toStartOfMinute, toStartOfHour, toTime, now -> DateTime
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*
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* А также:
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*
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* timeSlot(EventTime)
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* - округляет время до получаса.
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*
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* timeSlots(StartTime, Duration)
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* - для интервала времени, начинающегося в StartTime и продолжающегося Duration секунд,
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* возвращает массив моментов времени, состоящий из округлений вниз до получаса точек из этого интервала.
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* Например, timeSlots(toDateTime('2012-01-01 12:20:00'), 600) = [toDateTime('2012-01-01 12:00:00'), toDateTime('2012-01-01 12:30:00')].
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* Это нужно для поиска хитов, входящих в соответствующий визит.
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*/
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#define TIME_SLOT_SIZE 1800
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struct ToYearImpl
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{
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static inline UInt16 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toYear(t); }
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static inline UInt16 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut) { return date_lut.toYear(Yandex::DayNum_t(d)); }
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};
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struct ToMonthImpl
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{
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static inline UInt8 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toMonth(t); }
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static inline UInt8 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut) { return date_lut.toMonth(Yandex::DayNum_t(d)); }
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};
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struct ToDayOfMonthImpl
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{
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static inline UInt8 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toDayOfMonth(t); }
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static inline UInt8 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut) { return date_lut.toDayOfMonth(Yandex::DayNum_t(d)); }
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};
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struct ToDayOfWeekImpl
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{
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static inline UInt8 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toDayOfWeek(t); }
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static inline UInt8 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut) { return date_lut.toDayOfWeek(Yandex::DayNum_t(d)); }
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};
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struct ToHourImpl
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{
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static inline UInt8 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toHourInaccurate(t); }
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static inline UInt8 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut)
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{
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throw Exception("Illegal type Date of argument for function toHour", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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}
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};
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struct ToMinuteImpl
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{
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static inline UInt8 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toMinuteInaccurate(t); }
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static inline UInt8 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut)
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{
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throw Exception("Illegal type Date of argument for function toMinute", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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}
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};
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struct ToSecondImpl
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{
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static inline UInt8 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toSecondInaccurate(t); }
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static inline UInt8 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut)
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{
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throw Exception("Illegal type Date of argument for function toSecond", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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}
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};
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struct ToMondayImpl
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{
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static inline UInt16 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toFirstDayNumOfWeek(date_lut.toDayNum(t)); }
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static inline UInt16 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut) { return date_lut.toFirstDayNumOfWeek(Yandex::DayNum_t(d)); }
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};
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struct ToStartOfMonthImpl
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{
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static inline UInt16 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toFirstDayNumOfMonth(date_lut.toDayNum(t)); }
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static inline UInt16 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut) { return date_lut.toFirstDayNumOfMonth(Yandex::DayNum_t(d)); }
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};
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struct ToStartOfYearImpl
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{
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static inline UInt16 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toFirstDayNumOfYear(date_lut.toDayNum(t)); }
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static inline UInt16 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut) { return date_lut.toFirstDayNumOfYear(Yandex::DayNum_t(d)); }
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};
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struct ToTimeImpl
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{
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/// При переводе во время, дату будем приравнивать к 1970-01-02.
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static inline UInt32 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toTimeInaccurate(t) + 86400; }
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static inline UInt32 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut)
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{
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throw Exception("Illegal type Date of argument for function toTime", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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}
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};
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struct ToStartOfMinuteImpl
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{
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static inline UInt32 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toStartOfMinuteInaccurate(t); }
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static inline UInt32 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut)
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{
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throw Exception("Illegal type Date of argument for function toStartOfMinute", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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}
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};
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struct ToStartOfHourImpl
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{
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static inline UInt32 execute(UInt32 t, Yandex::DateLUTSingleton & date_lut) { return date_lut.toStartOfHourInaccurate(t); }
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static inline UInt32 execute(UInt16 d, Yandex::DateLUTSingleton & date_lut)
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{
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throw Exception("Illegal type Date of argument for function toStartOfHour", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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}
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};
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template <typename FromType, typename ToType, typename Transform, typename Name>
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struct DateTimeTransformImpl
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{
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static void execute(Block & block, const ColumnNumbers & arguments, size_t result)
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{
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Yandex::DateLUTSingleton & date_lut = Yandex::DateLUTSingleton::instance();
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if (const ColumnVector<FromType> * col_from = dynamic_cast<const ColumnVector<FromType> *>(&*block.getByPosition(arguments[0]).column))
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{
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ColumnVector<ToType> * col_to = new ColumnVector<ToType>;
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block.getByPosition(result).column = col_to;
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const typename ColumnVector<FromType>::Container_t & vec_from = col_from->getData();
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typename ColumnVector<ToType>::Container_t & vec_to = col_to->getData();
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size_t size = vec_from.size();
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vec_to.resize(size);
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for (size_t i = 0; i < size; ++i)
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vec_to[i] = Transform::execute(vec_from[i], date_lut);
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}
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else if (const ColumnConst<FromType> * col_from = dynamic_cast<const ColumnConst<FromType> *>(&*block.getByPosition(arguments[0]).column))
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{
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block.getByPosition(result).column = new ColumnConst<ToType>(col_from->size(), Transform::execute(col_from->getData(), date_lut));
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}
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else
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throw Exception("Illegal column " + block.getByPosition(arguments[0]).column->getName()
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+ " of first argument of function " + Name::get(),
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ErrorCodes::ILLEGAL_COLUMN);
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}
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};
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template <typename ToDataType, typename Transform, typename Name>
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class FunctionDateOrDateTimeToSomething : public IFunction
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{
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public:
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/// Получить имя функции.
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String getName() const
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{
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return Name::get();
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}
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/// Получить тип результата по типам аргументов. Если функция неприменима для данных аргументов - кинуть исключение.
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DataTypePtr getReturnType(const DataTypes & arguments) const
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{
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if (arguments.size() != 1)
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throw Exception("Number of arguments for function " + getName() + " doesn't match: passed "
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+ Poco::NumberFormatter::format(arguments.size()) + ", should be 1.",
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ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
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return new ToDataType;
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}
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/// Выполнить функцию над блоком.
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void execute(Block & block, const ColumnNumbers & arguments, size_t result)
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{
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IDataType * from_type = &*block.getByPosition(arguments[0]).type;
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if (dynamic_cast<const DataTypeDate *>(from_type))
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DateTimeTransformImpl<DataTypeDate::FieldType, typename ToDataType::FieldType, Transform, Name>::execute(block, arguments, result);
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else if (dynamic_cast<const DataTypeDateTime * >(from_type))
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DateTimeTransformImpl<DataTypeDateTime::FieldType, typename ToDataType::FieldType, Transform, Name>::execute(block, arguments, result);
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else
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throw Exception("Illegal type " + block.getByPosition(arguments[0]).type->getName() + " of argument of function " + getName(),
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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}
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};
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/// Получить текущее время. (Оно - константа, вычисляется один раз за весь запрос.)
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class FunctionNow : public IFunction
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{
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public:
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/// Получить имя функции.
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String getName() const
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{
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return "now";
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}
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/// Получить тип результата по типам аргументов. Если функция неприменима для данных аргументов - кинуть исключение.
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DataTypePtr getReturnType(const DataTypes & arguments) const
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{
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if (arguments.size() != 0)
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throw Exception("Number of arguments for function " + getName() + " doesn't match: passed "
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+ Poco::NumberFormatter::format(arguments.size()) + ", should be 0.",
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ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
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return new DataTypeDateTime;
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}
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/// Выполнить функцию над блоком.
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void execute(Block & block, const ColumnNumbers & arguments, size_t result)
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{
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block.getByPosition(result).column = new ColumnConstUInt32(
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block.rowsInFirstColumn(),
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time(0));
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}
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};
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class FunctionTimeSlot : public IFunction
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{
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public:
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/// Получить имя функции.
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String getName() const
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{
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return "timeSlot";
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}
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/// Получить тип результата по типам аргументов. Если функция неприменима для данных аргументов - кинуть исключение.
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DataTypePtr getReturnType(const DataTypes & arguments) const
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{
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if (arguments.size() != 1)
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throw Exception("Number of arguments for function " + getName() + " doesn't match: passed "
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+ Poco::NumberFormatter::format(arguments.size()) + ", should be 1.",
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ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
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if (!dynamic_cast<const DataTypeDateTime *>(&*arguments[0]))
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throw Exception("Illegal type " + arguments[0]->getName() + " of first argument of function " + getName() + ". Must be DateTime.",
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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return new DataTypeDateTime;
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}
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/// Выполнить функцию над блоком.
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void execute(Block & block, const ColumnNumbers & arguments, size_t result)
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{
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if (const ColumnUInt32 * times = dynamic_cast<const ColumnUInt32 *>(&*block.getByPosition(arguments[0]).column))
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{
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ColumnUInt32 * res = new ColumnUInt32;
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ColumnUInt32::Container_t & res_vec = res->getData();
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const ColumnUInt32::Container_t & vec = times->getData();
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size_t size = vec.size();
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res_vec.resize(size);
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for (size_t i = 0; i < size; ++i)
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res_vec[i] = vec[i] / TIME_SLOT_SIZE * TIME_SLOT_SIZE;
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block.getByPosition(result).column = res;
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}
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else if (const ColumnConstUInt32 * const_times = dynamic_cast<const ColumnConstUInt32 *>(&*block.getByPosition(arguments[0]).column))
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{
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block.getByPosition(result).column = new ColumnConstUInt32(block.rowsInFirstColumn(), const_times->getData() / TIME_SLOT_SIZE * TIME_SLOT_SIZE);
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}
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else
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throw Exception("Illegal column " + block.getByPosition(arguments[0]).column->getName()
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+ " of argument of function " + getName(),
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ErrorCodes::ILLEGAL_COLUMN);
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}
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};
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template <typename DurationType>
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struct TimeSlotsImpl
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{
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static void vector_vector(
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const std::vector<UInt32> & starts, const std::vector<DurationType> & durations,
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std::vector<UInt32> & result_values, ColumnArray::Offsets_t & result_offsets)
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{
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size_t size = starts.size();
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result_offsets.resize(size);
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result_values.reserve(size);
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ColumnArray::Offset_t current_offset = 0;
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for (size_t i = 0; i < size; ++i)
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{
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for (UInt32 value = starts[i] / TIME_SLOT_SIZE; value <= (starts[i] + durations[i]) / TIME_SLOT_SIZE; ++value)
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{
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result_values.push_back(value * TIME_SLOT_SIZE);
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++current_offset;
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}
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result_offsets[i] = current_offset;
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}
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}
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static void vector_constant(
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const std::vector<UInt32> & starts, DurationType duration,
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std::vector<UInt32> & result_values, ColumnArray::Offsets_t & result_offsets)
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{
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size_t size = starts.size();
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result_offsets.resize(size);
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result_values.reserve(size);
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ColumnArray::Offset_t current_offset = 0;
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for (size_t i = 0; i < size; ++i)
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{
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for (UInt32 value = starts[i] / TIME_SLOT_SIZE; value <= (starts[i] + duration) / TIME_SLOT_SIZE; ++value)
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{
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result_values.push_back(value * TIME_SLOT_SIZE);
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++current_offset;
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}
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result_offsets[i] = current_offset;
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}
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}
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static void constant_vector(
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UInt32 start, const std::vector<DurationType> & durations,
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std::vector<UInt32> & result_values, ColumnArray::Offsets_t & result_offsets)
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{
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size_t size = durations.size();
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result_offsets.resize(size);
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result_values.reserve(size);
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ColumnArray::Offset_t current_offset = 0;
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for (size_t i = 0; i < size; ++i)
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{
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for (UInt32 value = start / TIME_SLOT_SIZE; value <= (start + durations[i]) / TIME_SLOT_SIZE; ++value)
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{
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result_values.push_back(value * TIME_SLOT_SIZE);
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++current_offset;
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}
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result_offsets[i] = current_offset;
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}
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}
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static void constant_constant(
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UInt32 start, DurationType duration,
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Array & result)
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{
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for (UInt32 value = start / TIME_SLOT_SIZE; value <= (start + duration) / TIME_SLOT_SIZE; ++value)
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result.push_back(static_cast<UInt64>(value * TIME_SLOT_SIZE));
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}
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};
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class FunctionTimeSlots : public IFunction
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{
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public:
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/// Получить имя функции.
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String getName() const
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{
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return "timeSlots";
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}
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/// Получить тип результата по типам аргументов. Если функция неприменима для данных аргументов - кинуть исключение.
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DataTypePtr getReturnType(const DataTypes & arguments) const
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{
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if (arguments.size() != 2)
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throw Exception("Number of arguments for function " + getName() + " doesn't match: passed "
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+ Poco::NumberFormatter::format(arguments.size()) + ", should be 2.",
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ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
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if (!dynamic_cast<const DataTypeDateTime *>(&*arguments[0]))
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throw Exception("Illegal type " + arguments[0]->getName() + " of first argument of function " + getName() + ". Must be DateTime.",
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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if (!dynamic_cast<const DataTypeUInt32 *>(&*arguments[1]))
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throw Exception("Illegal type " + arguments[1]->getName() + " of second argument of function " + getName() + ". Must be UInt32.",
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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return new DataTypeArray(new DataTypeDateTime);
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}
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/// Выполнить функцию над блоком.
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void execute(Block & block, const ColumnNumbers & arguments, size_t result)
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{
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const ColumnUInt32 * starts = dynamic_cast<const ColumnUInt32 *>(&*block.getByPosition(arguments[0]).column);
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const ColumnConstUInt32 * const_starts = dynamic_cast<const ColumnConstUInt32 *>(&*block.getByPosition(arguments[0]).column);
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const ColumnUInt32 * durations = dynamic_cast<const ColumnUInt32 *>(&*block.getByPosition(arguments[1]).column);
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const ColumnConstUInt32 * const_durations = dynamic_cast<const ColumnConstUInt32 *>(&*block.getByPosition(arguments[1]).column);
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ColumnArray * res = new ColumnArray(new ColumnUInt32);
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ColumnUInt32::Container_t & res_values = dynamic_cast<ColumnUInt32 &>(res->getData()).getData();
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if (starts && durations)
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{
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TimeSlotsImpl<UInt32>::vector_vector(starts->getData(), durations->getData(), res_values, res->getOffsets());
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block.getByPosition(result).column = res;
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}
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else if (starts && const_durations)
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{
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TimeSlotsImpl<UInt32>::vector_constant(starts->getData(), const_durations->getData(), res_values, res->getOffsets());
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block.getByPosition(result).column = res;
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}
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else if (const_starts && durations)
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{
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TimeSlotsImpl<UInt32>::constant_vector(const_starts->getData(), durations->getData(), res_values, res->getOffsets());
|
||
block.getByPosition(result).column = res;
|
||
}
|
||
else if (const_starts && const_durations)
|
||
{
|
||
Array const_res;
|
||
TimeSlotsImpl<UInt32>::constant_constant(const_starts->getData(), const_durations->getData(), const_res);
|
||
block.getByPosition(result).column = new ColumnConstArray(block.rowsInFirstColumn(), const_res, new DataTypeArray(new DataTypeDateTime));
|
||
}
|
||
else
|
||
throw Exception("Illegal columns " + block.getByPosition(arguments[0]).column->getName()
|
||
+ ", " + block.getByPosition(arguments[1]).column->getName()
|
||
+ " of arguments of function " + getName(),
|
||
ErrorCodes::ILLEGAL_COLUMN);
|
||
}
|
||
};
|
||
|
||
|
||
struct NameToYear { static const char * get() { return "toYear"; } };
|
||
struct NameToMonth { static const char * get() { return "toMonth"; } };
|
||
struct NameToDayOfMonth { static const char * get() { return "toDayOfMonth"; } };
|
||
struct NameToDayOfWeek { static const char * get() { return "toDayOfWeek"; } };
|
||
struct NameToHour { static const char * get() { return "toHour"; } };
|
||
struct NameToMinute { static const char * get() { return "toMinute"; } };
|
||
struct NameToSecond { static const char * get() { return "toSecond"; } };
|
||
struct NameToMonday { static const char * get() { return "toMonday"; } };
|
||
struct NameToStartOfMonth { static const char * get() { return "toStartOfMonth"; } };
|
||
struct NameToStartOfYear { static const char * get() { return "toStartOfYear"; } };
|
||
struct NameToStartOfMinute { static const char * get() { return "toStartOfMinute"; } };
|
||
struct NameToStartOfHour { static const char * get() { return "toStartOfHour"; } };
|
||
struct NameToTime { static const char * get() { return "toTime"; } };
|
||
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeUInt16, ToYearImpl, NameToYear> FunctionToYear;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeUInt8, ToMonthImpl, NameToMonth> FunctionToMonth;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeUInt8, ToDayOfMonthImpl, NameToDayOfMonth> FunctionToDayOfMonth;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeUInt8, ToDayOfWeekImpl, NameToDayOfWeek> FunctionToDayOfWeek;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeUInt8, ToHourImpl, NameToHour> FunctionToHour;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeUInt8, ToMinuteImpl, NameToMinute> FunctionToMinute;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeUInt8, ToSecondImpl, NameToSecond> FunctionToSecond;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeDate, ToMondayImpl, NameToMonday> FunctionToMonday;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeDate, ToStartOfMonthImpl, NameToStartOfMonth> FunctionToStartOfMonth;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeDate, ToStartOfYearImpl, NameToStartOfYear> FunctionToStartOfYear;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeDateTime, ToStartOfMinuteImpl, NameToStartOfMinute> FunctionToStartOfMinute;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeDateTime, ToStartOfHourImpl, NameToStartOfHour> FunctionToStartOfHour;
|
||
typedef FunctionDateOrDateTimeToSomething<DataTypeDateTime, ToTimeImpl, NameToTime> FunctionToTime;
|
||
|
||
}
|