window

Documentation

Index

• Constants
• type Duration
  • func NewDurationFromTimeDuration(duration time.Duration) (*Duration, error)
  • func ParseDuration(durationString string) (*Duration, error)
• type UnitType
• type Window
  • func SetInterval(duration Duration) Window
  • func SetSessionWindow(tsColumn string, duration Duration) Window
  • func SetStateWindow(column string) Window
  • func (sc Window) Build(builder clause.Builder)
  • func (sc Window) MergeClause(c *clause.Clause)
  • func (sc Window) Name() string
  • func (sc Window) SetOffset(offset Duration) Window
  • func (sc Window) SetSliding(sliding Duration) Window

Constants

const (
	SESSION = iota + 1
	STATE
	INTERVAL
)

Types

type Duration

type Duration struct {
	Value uint64
	Unit  UnitType
}

func NewDurationFromTimeDuration

func NewDurationFromTimeDuration(duration time.Duration) (*Duration, error)

func ParseDuration

func ParseDuration(durationString string) (*Duration, error)

type UnitType

type UnitType string

const (
	Microsecond UnitType = "u"
	Millisecond UnitType = "a"
	Second      UnitType = "s"
	Minute      UnitType = "m"
	Hour        UnitType = "h"
	Day         UnitType = "d"
	Week        UnitType = "w"
	Month       UnitType = "n"
	Year        UnitType = "y"
)

u(微秒)、a(毫秒)、s(秒)、m(分)、h(小时)、d(天)、w(周) n(自然月) 和 y(自然年)

type Window

type Window struct {
	// contains filtered or unexported fields
}

func SetInterval

func SetInterval(duration Duration) Window

SetInterval create an interval window [INTERVAL(interval_val [, interval_offset]) [SLIDING sliding_val]]

func SetSessionWindow

func SetSessionWindow(tsColumn string, duration Duration) Window

SetSessionWindow create a session window [SESSION(ts_col, tol_val)]

func SetStateWindow

func SetStateWindow(column string) Window

SetStateWindow create a state window [STATE_WINDOW(col)]

func (Window) Build

func (sc Window) Build(builder clause.Builder)

func (Window) MergeClause

func (sc Window) MergeClause(c *clause.Clause)

func (Window) Name

func (sc Window) Name() string

func (Window) SetOffset

func (sc Window) SetOffset(offset Duration) Window

SetOffset set offset to interval window

func (Window) SetSliding

func (sc Window) SetSliding(sliding Duration) Window

SetSliding set sliding to interval window