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

Class PrepareWrite<InputT,DestinationT extends @NonNull java.lang.Object,OutputT>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<InputT>,org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<DestinationT,OutputT>>>

org.apache.beam.sdk.io.gcp.bigquery.PrepareWrite<InputT,DestinationT,OutputT>

All Implemented Interfaces:

java.io.Serializable, org.apache.beam.sdk.transforms.display.HasDisplayData

public class PrepareWrite<InputT,DestinationT extends @NonNull java.lang.Object,OutputT>
extends org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<InputT>,org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<DestinationT,OutputT>>>

Prepare an input PCollection for writing to BigQuery. Use the table function to determine which tables each element is written to, and format the element into a TableRow using the user-supplied format function.

See Also:

Serialized Form

Field Summary

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

annotations, displayData, name, resourceHints

Constructor Summary

Constructors

Constructor	Description
PrepareWrite(DynamicDestinations<InputT,DestinationT> dynamicDestinations, org.apache.beam.sdk.transforms.SerializableFunction<InputT,OutputT> formatFunction)

Method Summary

Modifier and Type	Method	Description
org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<DestinationT,OutputT>>	expand(org.apache.beam.sdk.values.PCollection<InputT> input)

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

addAnnotation, compose, compose, getAdditionalInputs, getAnnotations, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setDisplayData, setResourceHints, toString, validate, validate

Methods inherited from class java.lang.Object

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

Constructor Detail

PrepareWrite

public PrepareWrite(DynamicDestinations<InputT,DestinationT> dynamicDestinations,
                    org.apache.beam.sdk.transforms.SerializableFunction<InputT,OutputT> formatFunction)

Method Detail

expand

public org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<DestinationT,OutputT>> expand(org.apache.beam.sdk.values.PCollection<InputT> input)

Specified by:

expand in class org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<InputT>,org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<DestinationT extends @NonNull java.lang.Object,OutputT>>>