org.apache.beam.sdk.io.parquet

Class ParquetIO.ReadFiles

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<FileIO.ReadableFile>,PCollection<GenericRecord>>

org.apache.beam.sdk.io.parquet.ParquetIO.ReadFiles

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

Enclosing class:

ParquetIO

public abstract static class ParquetIO.ReadFiles
extends PTransform<PCollection<FileIO.ReadableFile>,PCollection<GenericRecord>>

Implementation of ParquetIO.readFiles(Schema).

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ParquetIO.ReadFiles.BlockTracker

Field Summary

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

name

Constructor Summary

Constructors

Constructor and Description
ReadFiles()

Method Summary

Modifier and Type	Method and Description
PCollection<GenericRecord>	expand(PCollection<FileIO.ReadableFile> input) Override this method to specify how this PTransform should be expanded on the given InputT.
ParquetIO.ReadFiles	withAvroDataModel(GenericData model) Define the Avro data model; see AvroParquetReader.Builder#withDataModel(GenericData).
ParquetIO.ReadFiles	withProjection(Schema projectionSchema, Schema encoderSchema)
ParquetIO.ReadFiles	withSplit() Enable the Splittable reading.

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

compose, 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

ReadFiles

public ReadFiles()

Method Detail

withAvroDataModel

public ParquetIO.ReadFiles withAvroDataModel(GenericData model)

Define the Avro data model; see AvroParquetReader.Builder#withDataModel(GenericData).

withProjection

public ParquetIO.ReadFiles withProjection(Schema projectionSchema,
                                          Schema encoderSchema)

withSplit

public ParquetIO.ReadFiles withSplit()

Enable the Splittable reading.

expand

public PCollection<GenericRecord> expand(PCollection<FileIO.ReadableFile> 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<FileIO.ReadableFile>,PCollection<GenericRecord>>