Package io.prestosql.decoder.avro

Class AvroRowDecoder

  • All Implemented Interfaces:
    RowDecoder
    public class AvroRowDecoder
extends java.lang.Object
implements RowDecoder

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.String NAME  

    • Constructor Summary

      Constructors 
      Constructor Description
      AvroRowDecoder​(org.apache.avro.io.DatumReader<org.apache.avro.generic.GenericRecord> avroRecordReader, java.util.Set<DecoderColumnHandle> columns)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.util.Optional<java.util.Map<DecoderColumnHandle,​FieldValueProvider>> decodeRow​(byte[] data, java.util.Map<java.lang.String,​java.lang.String> dataMap)
      Decodes a given set of bytes into field values.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • AvroRowDecoder

        public AvroRowDecoder​(org.apache.avro.io.DatumReader<org.apache.avro.generic.GenericRecord> avroRecordReader,
                      java.util.Set<DecoderColumnHandle> columns)

    • Method Detail

      • decodeRow

        public java.util.Optional<java.util.Map<DecoderColumnHandle,​FieldValueProvider>> decodeRow​(byte[] data,
                                                                                                 java.util.Map<java.lang.String,​java.lang.String> dataMap)
        Description copied from interface: RowDecoder
        Decodes a given set of bytes into field values.
        Specified by:
        decodeRow in interface RowDecoder
        Parameters:
        data - The row data to decode.
        dataMap - The row data as fields map
        Returns:
        Returns mapping from column handle to decoded value. Unmapped columns will be reported as null. Optional.empty() signals decoding error.