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

Class PrepareWrite<T,DestinationT>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<T>,org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<DestinationT,com.google.api.services.bigquery.model.TableRow>>>

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

All Implemented Interfaces:

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

public class PrepareWrite<T,DestinationT>
extends org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<T>,org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<DestinationT,com.google.api.services.bigquery.model.TableRow>>>

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

name

Constructor Summary

Constructors

Constructor and Description
PrepareWrite(DynamicDestinations<T,DestinationT> dynamicDestinations, org.apache.beam.sdk.transforms.SerializableFunction<T,com.google.api.services.bigquery.model.TableRow> formatFunction)

Method Summary

Modifier and Type	Method and Description
org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<DestinationT,com.google.api.services.bigquery.model.TableRow>>	expand(org.apache.beam.sdk.values.PCollection<T> input)

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

compose, 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

PrepareWrite

public PrepareWrite(DynamicDestinations<T,DestinationT> dynamicDestinations,
                    org.apache.beam.sdk.transforms.SerializableFunction<T,com.google.api.services.bigquery.model.TableRow> formatFunction)

Method Detail

expand

public org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<DestinationT,com.google.api.services.bigquery.model.TableRow>> expand(org.apache.beam.sdk.values.PCollection<T> input)

Specified by:

expand in class org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollection<T>,org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.KV<DestinationT,com.google.api.services.bigquery.model.TableRow>>>