PeriodicImpulse (core 2.44.0 API)

java.lang.Object
- org.apache.beam.sdk.transforms.PTransform<PBegin,PCollection<org.joda.time.Instant>>
- - org.apache.beam.sdk.transforms.PeriodicImpulse

All Implemented Interfaces:

java.io.Serializable, HasDisplayData
```
public class PeriodicImpulse
extends PTransform<PBegin,PCollection<org.joda.time.Instant>>
```
A PTransform which produces a sequence of elements at fixed runtime intervals.
If applyWindowing() is specified, each element will be assigned to its own fixed window.
See PeriodicSequence.

See Also:

Serialized Form

Field Summary
- Fields inherited from class org.apache.beam.sdk.transforms.PTransform
  name, resourceHints

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`PeriodicImpulse`	`applyWindowing()`
`static PeriodicImpulse`	`create()`
`PCollection<org.joda.time.Instant>`	`expand(PBegin input)`	Override this method to specify how this `PTransform` should be expanded on the given `InputT`.
`PeriodicImpulse`	`startAt(org.joda.time.Instant startTime)`
`PeriodicImpulse`	`stopAt(org.joda.time.Instant stopTime)`
`PeriodicImpulse`	`withInterval(org.joda.time.Duration interval)`

Methods inherited from class org.apache.beam.sdk.transforms.PTransform
compose, compose, getAdditionalInputs, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setResourceHints, toString, validate, validate

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Method Detail
  - create
```
public static PeriodicImpulse create()
```
  - startAt
```
public PeriodicImpulse startAt(org.joda.time.Instant startTime)
```
  - stopAt
```
public PeriodicImpulse stopAt(org.joda.time.Instant stopTime)
```
  - withInterval
```
public PeriodicImpulse withInterval(org.joda.time.Duration interval)
```
  - applyWindowing
```
public PeriodicImpulse applyWindowing()
```
  - expand
```
public PCollection<org.joda.time.Instant> expand(PBegin input)
```
    Description copied from class: PTransform
    
    Override this method to specify how this PTransform should be expanded on the given InputT.
    NOTE: This method should not be called directly. Instead apply the PTransform should be applied to the InputT using the apply method.
    Composite transforms, which are defined in terms of other transforms, should return the output of one of the composed transforms. Non-composite transforms, which do not apply any transforms internally, should return a new unbound output and register evaluators (via backend-specific registration methods).
    
    Specified by:
    
    expand in class PTransform<PBegin,PCollection<org.joda.time.Instant>>