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aggregators.go
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aggregators.go
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package aggregate
import (
"fmt"
"github.com/TIBCOSoftware/flogo-contrib/activity/aggregate/window"
"github.com/TIBCOSoftware/flogo-contrib/activity/aggregate/window/functions"
)
func NewTumblingWindow(function string, settings *window.Settings) (window.Window, error) {
switch function {
case "avg":
return window.NewTumblingWindow(functions.AddSampleSum, functions.AggregateSingleAvg, settings), nil
case "sum":
return window.NewTumblingWindow(functions.AddSampleSum, functions.AggregateSingleNoopFunc, settings), nil
case "min":
return window.NewTumblingWindow(functions.AddSampleMin, functions.AggregateSingleNoopFunc, settings), nil
case "max":
return window.NewTumblingWindow(functions.AddSampleMax, functions.AggregateSingleNoopFunc, settings), nil
case "count":
return window.NewTumblingWindow(functions.AddSampleCount, functions.AggregateSingleNoopFunc, settings), nil
case "accumulate":
return window.NewTumblingWindow(functions.AddSampleAccum, functions.AggregateSingleNoopFunc, settings), nil
default:
return nil, fmt.Errorf("unsupported function: %s", function)
}
}
// NewTumblingTimeWindow creates a new tumbling time window, all time windows are managed
// externally and are progressed using the NextBlock() method
func NewTumblingTimeWindow(function string, settings *window.Settings) (window.TimeWindow, error) {
switch function {
case "avg":
return window.NewTumblingTimeWindow(functions.AddSampleSum, functions.AggregateSingleAvg, settings), nil
case "sum":
return window.NewTumblingTimeWindow(functions.AddSampleSum, functions.AggregateSingleNoopFunc, settings), nil
case "min":
return window.NewTumblingTimeWindow(functions.AddSampleMin, functions.AggregateSingleNoopFunc, settings), nil
case "max":
return window.NewTumblingTimeWindow(functions.AddSampleMax, functions.AggregateSingleNoopFunc, settings), nil
case "count":
return window.NewTumblingTimeWindow(functions.AddSampleCount, functions.AggregateSingleNoopFunc, settings), nil
case "accumulate":
return window.NewTumblingTimeWindow(functions.AddSampleAccum, functions.AggregateSingleNoopFunc, settings), nil
default:
return nil, fmt.Errorf("unsupported function: %s", function)
}
}
func NewSlidingWindow(function string, settings *window.Settings) (window.Window, error) {
switch function {
case "avg":
return window.NewSlidingWindow(functions.AggregateBlocksAvg, settings), nil
case "sum":
return window.NewSlidingWindow(functions.AggregateBlocksSum, settings), nil
case "min":
return window.NewSlidingWindow(functions.AggregateBlocksMin, settings), nil
case "max":
return window.NewSlidingWindow(functions.AggregateBlocksMax, settings), nil
case "count":
return window.NewSlidingWindow(functions.AggregateBlocksCount, settings), nil
case "accumulate":
return window.NewSlidingWindow(functions.AggregateBlocksAccumulate, settings), nil
default:
return nil, fmt.Errorf("unsupported function: %s", function)
}
}
// NewSlidingTimeWindow creates a new sliding time window, all time windows are managed
// externally and are progressed using the NextBlock() method
func NewSlidingTimeWindow(function string, settings *window.Settings) (window.TimeWindow, error) {
switch function {
case "avg":
return window.NewSlidingTimeWindow(functions.AddSampleSum, functions.AggregateBlocksAvg, settings), nil
case "sum":
return window.NewSlidingTimeWindow(functions.AddSampleSum, functions.AggregateBlocksSum, settings), nil
case "min":
return window.NewSlidingTimeWindow(functions.AddSampleMin, functions.AggregateBlocksMin, settings), nil
case "max":
return window.NewSlidingTimeWindow(functions.AddSampleMax, functions.AggregateBlocksMax, settings), nil
case "count":
return window.NewSlidingTimeWindow(functions.AddSampleCount, functions.AggregateBlocksSum, settings), nil
default:
return nil, fmt.Errorf("unsupported function: %s", function)
}
}