org.apache.beam.sdk.io.cassandra

Class CassandraIO.ReadAll<T>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<CassandraIO.Read<T>>,PCollection<T>>

org.apache.beam.sdk.io.cassandra.CassandraIO.ReadAll<T>

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

Enclosing class:

CassandraIO

public abstract static class CassandraIO.ReadAll<T>
extends PTransform<PCollection<CassandraIO.Read<T>>,PCollection<T>>

A PTransform to read data from Apache Cassandra. See CassandraIO for more information on usage and configuration.

See Also:

Serialized Form

Field Summary

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

name, resourceHints

Constructor Summary

Constructors

Constructor and Description
ReadAll()

Method Summary

Modifier and Type	Method and Description
PCollection<T>	expand(PCollection<CassandraIO.Read<T>> input) Override this method to specify how this PTransform should be expanded on the given InputT.
CassandraIO.ReadAll<T>	withCoder(Coder<T> coder) Specify the Coder used to serialize the entity in the PCollection.

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

compose, compose, getAdditionalInputs, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setResourceHints, toString, validate

Methods inherited from class java.lang.Object

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

Constructor Detail

ReadAll

public ReadAll()

Method Detail

withCoder

public CassandraIO.ReadAll<T> withCoder(Coder<T> coder)

Specify the Coder used to serialize the entity in the PCollection.

expand

public PCollection<T> expand(PCollection<CassandraIO.Read<T>> 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<CassandraIO.Read<T>>,PCollection<T>>