count

Documentation

Index

• type Count
  • func NewCount(inputColumns, optionalInputColumns []io.DataShape) (ca *Count)
  • func (ca *Count) Accum(cols io.ColumnInterface) error
  • func (ca *Count) GetInitArgs() []io.DataShape
  • func (ca *Count) GetOptionalArgs() []io.DataShape
  • func (ca *Count) GetRequiredArgs() []io.DataShape
  • func (ca *Count) Init(itf ...interface{}) error
  • func (c Count) New() (out uda.AggInterface, am *functions.ArgumentMap)
  • func (ca *Count) Output() *io.ColumnSeries
  • func (ca *Count) Reset()

Types

type Count

type Count struct {
	uda.AggInterface

	// Input arguments mapping
	ArgMap *functions.ArgumentMap

	Sum int64
}

func NewCount

func NewCount(inputColumns, optionalInputColumns []io.DataShape) (ca *Count)

CONCRETE - these may be suitable methods for general usage

func (*Count) Accum

func (ca *Count) Accum(cols io.ColumnInterface) error

Accum() sends new data to the aggregate

func (*Count) GetInitArgs

func (ca *Count) GetInitArgs() []io.DataShape

func (*Count) GetOptionalArgs

func (ca *Count) GetOptionalArgs() []io.DataShape

func (*Count) GetRequiredArgs

func (ca *Count) GetRequiredArgs() []io.DataShape

func (*Count) Init

func (ca *Count) Init(itf ...interface{}) error

func (Count) New

func (c Count) New() (out uda.AggInterface, am *functions.ArgumentMap)

Creates a new count using the arguments of the specific implementation for inputColumns and optionalInputColumns

func (*Count) Output

func (ca *Count) Output() *io.ColumnSeries

Output() returns the currently valid output of this aggregate

func (*Count) Reset

func (ca *Count) Reset()

Reset() puts the aggregate state back to "new"