org.apache.beam.sdk.io.gcp.bigquery

Class StreamingInserts<DestinationT>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<KV<DestinationT,TableRow>>,WriteResult>

org.apache.beam.sdk.io.gcp.bigquery.StreamingInserts<DestinationT>

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

public class StreamingInserts<DestinationT>
extends PTransform<PCollection<KV<DestinationT,TableRow>>,WriteResult>

PTransform that performs streaming BigQuery write. To increase consistency, it leverages BigQuery's best effort de-dup mechanism.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.beam.sdk.transforms.PTransform

name

Method Summary

Modifier and Type	Method and Description
WriteResult	expand(PCollection<KV<DestinationT,TableRow>> input) Applies this PTransform on the given InputT, and returns its Output.
protected Coder<java.lang.Void>	getDefaultOutputCoder() Returns the default Coder to use for the output of this single-output PTransform.

Methods inherited from class org.apache.beam.sdk.transforms.PTransform

getAdditionalInputs, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, populateDisplayData, toString, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getDefaultOutputCoder

protected Coder<java.lang.Void> getDefaultOutputCoder()

Description copied from class: PTransform

Returns the default Coder to use for the output of this single-output PTransform.

By default, always throws

Overrides:

getDefaultOutputCoder in class PTransform<PCollection<KV<DestinationT,TableRow>>,WriteResult>

expand

public WriteResult expand(PCollection<KV<DestinationT,TableRow>> input)

Description copied from class: PTransform

Applies this PTransform on the given InputT, and returns its Output.

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<PCollection<KV<DestinationT,TableRow>>,WriteResult>