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

Class CreateTables<DestinationT>

java.lang.Object

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

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

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

public class CreateTables<DestinationT>
extends PTransform<PCollection<KV<DestinationT,TableRow>>,PCollection<KV<TableDestination,TableRow>>>

Creates any tables needed before performing streaming writes to the tables. This is a side-effect DoFn, and returns the original collection unchanged.

See Also:

Serialized Form

Field Summary

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

name

Constructor Summary

Constructors

Constructor and Description
CreateTables(BigQueryIO.Write.CreateDisposition createDisposition, DynamicDestinations<?,DestinationT> dynamicDestinations)

Method Summary

Modifier and Type	Method and Description
PCollection<KV<TableDestination,TableRow>>	expand(PCollection<KV<DestinationT,TableRow>> input) Applies this PTransform on the given InputT, and returns its Output.

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

CreateTables

public CreateTables(BigQueryIO.Write.CreateDisposition createDisposition,
                    DynamicDestinations<?,DestinationT> dynamicDestinations)

Method Detail

expand

public PCollection<KV<TableDestination,TableRow>> 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>>,PCollection<KV<TableDestination,TableRow>>>