org.apache.beam.sdk.extensions.sql.impl.transform

Class BeamSqlProjectFn

java.lang.Object

org.apache.beam.sdk.transforms.DoFn<Row,Row>

org.apache.beam.sdk.extensions.sql.impl.transform.BeamSqlProjectFn

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

public class BeamSqlProjectFn
extends DoFn<Row,Row>

BeamSqlProjectFn is the executor for a BeamProjectRel step.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.beam.sdk.transforms.DoFn

DoFn.BoundedPerElement, DoFn.Element, DoFn.FinishBundle, DoFn.FinishBundleContext, DoFn.GetInitialRestriction, DoFn.GetRestrictionCoder, DoFn.MultiOutputReceiver, DoFn.NewTracker, DoFn.OnTimer, DoFn.OnTimerContext, DoFn.OutputReceiver<T>, DoFn.ProcessContext, DoFn.ProcessContinuation, DoFn.ProcessElement, DoFn.RequiresStableInput, DoFn.Setup, DoFn.SplitRestriction, DoFn.StartBundle, DoFn.StartBundleContext, DoFn.StateId, DoFn.Teardown, DoFn.TimerId, DoFn.Timestamp, DoFn.UnboundedPerElement, DoFn.WindowedContext

Constructor Summary

Constructors

Constructor and Description
BeamSqlProjectFn(java.lang.String stepName, BeamSqlExpressionExecutor executor, Schema outputSchema)

Method Summary

Modifier and Type	Method and Description
void	close()
void	processElement(DoFn.ProcessContext c, BoundedWindow window)
void	setup()

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

getAllowedTimestampSkew, getInputTypeDescriptor, getOutputTypeDescriptor, populateDisplayData, prepareForProcessing

Methods inherited from class java.lang.Object

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

Constructor Detail

BeamSqlProjectFn

public BeamSqlProjectFn(java.lang.String stepName,
                        BeamSqlExpressionExecutor executor,
                        Schema outputSchema)

Method Detail

setup

@DoFn.Setup
public void setup()

processElement

@DoFn.ProcessElement
public void processElement(DoFn.ProcessContext c,
                                                BoundedWindow window)

close

@DoFn.Teardown
public void close()