Package 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:
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:

  • Constructor Details

    • ReadFiles

      public ReadFiles()

  • Method Details

    • 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)

    • withConfiguration

      public ParquetIO.ReadFiles withConfiguration(Map<String,String> configuration)
      Specify Hadoop configuration for ParquetReader.

    • withConfiguration

      public ParquetIO.ReadFiles withConfiguration(org.apache.hadoop.conf.Configuration configuration)
      Specify Hadoop configuration for ParquetReader.

    • withBeamSchemas

      public ParquetIO.ReadFiles withBeamSchemas(boolean inferBeamSchema)

    • 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>>

    • populateDisplayData

      public void populateDisplayData(DisplayData.Builder builder)
      Description copied from class: PTransform
      Register display data for the given transform or component.

      populateDisplayData(DisplayData.Builder) is invoked by Pipeline runners to collect display data via DisplayData.from(HasDisplayData). Implementations may call super.populateDisplayData(builder) in order to register display data in the current namespace, but should otherwise use subcomponent.populateDisplayData(builder) to use the namespace of the subcomponent.

      By default, does not register any display data. Implementors may override this method to provide their own display data.

      Specified by:
      populateDisplayData in interface HasDisplayData
      Overrides:
      populateDisplayData in class PTransform<PCollection<FileIO.ReadableFile>,PCollection<GenericRecord>>
      Parameters:
      builder - The builder to populate with display data.
      See Also: