Package org.apache.beam.examples.complete.datatokenization.utils

Class CsvConverters.ReadCsv

  • All Implemented Interfaces:
    java.io.Serializable, org.apache.beam.sdk.transforms.display.HasDisplayData
    Enclosing class:
    CsvConverters
    public abstract static class CsvConverters.ReadCsv
extends org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PBegin,​org.apache.beam.sdk.values.PCollectionTuple>
    The CsvConverters.ReadCsv class is a PTransform that reads from one for more Csv files. The transform returns a PCollectionTuple consisting of the following PCollection:
    • headerTag() - Contains headers found in files if read with headers, contains empty PCollection if no headers.
    • lineTag() - Contains Csv lines as a PCollection of strings.
    See Also:
    Serialized Form

    • Field Summary

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

        annotations, displayData, name, resourceHints

    • Constructor Summary

      Constructors 
      Constructor Description
      ReadCsv()  

    • Method Summary

      All Methods Static Methods Instance Methods Abstract Methods Concrete Methods 
      Modifier and Type Method Description
      abstract java.lang.String csvFormat()  
      abstract java.lang.String delimiter()  
      org.apache.beam.sdk.values.PCollectionTuple expand​(org.apache.beam.sdk.values.PBegin input)  
      abstract java.lang.Boolean hasHeaders()  
      abstract org.apache.beam.sdk.values.TupleTag<java.lang.String> headerTag()  
      abstract java.lang.String inputFileSpec()  
      abstract org.apache.beam.sdk.values.TupleTag<java.lang.String> lineTag()  
      static CsvConverters.ReadCsv.Builder newBuilder()  

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

        addAnnotation, compose, compose, getAdditionalInputs, getAnnotations, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setDisplayData, setResourceHints, toString, validate, validate

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • ReadCsv

        public ReadCsv()

    • Method Detail

      • csvFormat

        public abstract java.lang.String csvFormat()

      • delimiter

        @Nullable
public abstract java.lang.String delimiter()

      • hasHeaders

        public abstract java.lang.Boolean hasHeaders()

      • inputFileSpec

        public abstract java.lang.String inputFileSpec()

      • headerTag

        public abstract org.apache.beam.sdk.values.TupleTag<java.lang.String> headerTag()

      • lineTag

        public abstract org.apache.beam.sdk.values.TupleTag<java.lang.String> lineTag()

      • expand

        public org.apache.beam.sdk.values.PCollectionTuple expand​(org.apache.beam.sdk.values.PBegin input)
        Specified by:
        expand in class org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PBegin,​org.apache.beam.sdk.values.PCollectionTuple>