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

Class StorageApiConvertMessages<DestinationT,ElementT>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<KV<DestinationT,ElementT>>,PCollectionTuple>

org.apache.beam.sdk.io.gcp.bigquery.StorageApiConvertMessages<DestinationT,ElementT>

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

public class StorageApiConvertMessages<DestinationT,ElementT>
extends PTransform<PCollection<KV<DestinationT,ElementT>>,PCollectionTuple>

A transform that converts messages to protocol buffers in preparation for writing to BigQuery.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StorageApiConvertMessages.ConvertMessagesDoFn<DestinationT,ElementT>

Field Summary

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

name, resourceHints

Constructor Summary

Constructors

Constructor and Description

StorageApiConvertMessages(org.apache.beam.sdk.io.gcp.bigquery.StorageApiDynamicDestinations<ElementT,DestinationT> dynamicDestinations, BigQueryServices bqServices, TupleTag<BigQueryStorageApiInsertError> failedWritesTag, TupleTag<KV<DestinationT,StorageApiWritePayload>> successfulWritesTag, Coder<BigQueryStorageApiInsertError> errorCoder, Coder<KV<DestinationT,StorageApiWritePayload>> successCoder, @Nullable SerializableFunction<ElementT,RowMutationInformation> rowMutationFn)

Method Summary

Modifier and Type	Method and Description
PCollectionTuple	expand(PCollection<KV<DestinationT,ElementT>> input) Override this method to specify how this PTransform should be expanded on the given InputT.

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

Constructor Detail

StorageApiConvertMessages

public StorageApiConvertMessages(org.apache.beam.sdk.io.gcp.bigquery.StorageApiDynamicDestinations<ElementT,DestinationT> dynamicDestinations,
                                 BigQueryServices bqServices,
                                 TupleTag<BigQueryStorageApiInsertError> failedWritesTag,
                                 TupleTag<KV<DestinationT,StorageApiWritePayload>> successfulWritesTag,
                                 Coder<BigQueryStorageApiInsertError> errorCoder,
                                 Coder<KV<DestinationT,StorageApiWritePayload>> successCoder,
                                 @Nullable SerializableFunction<ElementT,RowMutationInformation> rowMutationFn)

Method Detail

expand

public PCollectionTuple expand(PCollection<KV<DestinationT,ElementT>> 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<PCollection<KV<DestinationT,ElementT>>,PCollectionTuple>