Package org.apache.beam.sdk.io

Class TFRecordIO.Read

    • Constructor Detail

      • Read

        public Read()

    • Method Detail

      • from

        public TFRecordIO.Read from​(java.lang.String filepattern)
        Returns a transform for reading TFRecord files that reads from the file(s) with the given filename or filename pattern. This can be a local path (if running locally), or a Google Cloud Storage filename or filename pattern of the form "gs://<bucket>/<filepath>" (if running locally or using remote execution). Standard Java Filesystem glob patterns ("*", "?", "[..]") are supported.

      • withoutValidation

        public TFRecordIO.Read withoutValidation()
        Returns a transform for reading TFRecord files that has GCS path validation on pipeline creation disabled.

        This can be useful in the case where the GCS input does not exist at the pipeline creation time, but is expected to be available at execution time.

      • withCompression

        public TFRecordIO.Read withCompression​(Compression compression)
        Returns a transform for reading TFRecord files that decompresses all input files using the specified compression type.

        If no compression type is specified, the default is Compression.AUTO. In this mode, the compression type of the file is determined by its extension via Compression.detect(String).

      • expand

        public PCollection<byte[]> expand​(PBegin 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<PBegin,​PCollection<byte[]>>

      • 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<PBegin,​PCollection<byte[]>>
        Parameters:
        builder - The builder to populate with display data.
        See Also:
        HasDisplayData