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

Class BeamSetOperatorRelBase

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollectionList<Row>,PCollection<Row>>

org.apache.beam.sdk.extensions.sql.impl.rel.BeamSetOperatorRelBase

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

public class BeamSetOperatorRelBase
extends PTransform<PCollectionList<Row>,PCollection<Row>>

Delegate for Set operators: BeamUnionRel, BeamIntersectRel and BeamMinusRel.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BeamSetOperatorRelBase.OpType Set operator type.

Field Summary

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

name

Constructor Summary

Constructors

Constructor and Description
BeamSetOperatorRelBase(BeamRelNode beamRelNode, BeamSetOperatorRelBase.OpType opType, boolean all)

Method Summary

Modifier and Type	Method and Description
PCollection<Row>	expand(PCollectionList<Row> inputs) 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

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

BeamSetOperatorRelBase

public BeamSetOperatorRelBase(BeamRelNode beamRelNode,
                              BeamSetOperatorRelBase.OpType opType,
                              boolean all)

Method Detail

expand

public PCollection<Row> expand(PCollectionList<Row> inputs)

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<PCollectionList<Row>,PCollection<Row>>