Package net.sourceforge.jbizmo.commons.avro.util

Class AvroObjectConverter

java.lang.Object
net.sourceforge.jbizmo.commons.avro.util.AvroObjectConverter
public class AvroObjectConverter extends Object

Utility class that converts Avro objects into similar objects and vice versa by using reflection. The converter methods expect that both classes have the same fields with the same name. The respective field types can be different. When converting an object into its Avro counterpart the fields of type Date and GregorianCalendar are converted to Instant. The converter also supports converting complex structures (e.g. an Avro object that contains a field of type SpecificRecordBase or a list with SpecificRecordBase objects). If different enum fields must be converted the literals of both enums must be equal!

Copyright 2021 (C) by Martin Ganserer

Version:
1.0.0
Author:
Martin Ganserer

  • Method Summary

    Modifier and Type
    Method
    Description
    static <T extends org.apache.avro.specific.SpecificRecordBase>
    T
    toAvro(Object object, Class<T> avroType)
    Convert the given object into an Avro object
    static <T extends org.apache.avro.specific.SpecificRecordBase, S>
    List<T>
    toAvroList(List<S> objectList, Class<T> avroType)
    Convert an object list into a list of Avro objects
    static <T> T
    toObject(org.apache.avro.specific.SpecificRecordBase avroRecord, Class<T> type)
    Convert the given Avro object into an object of the desired type
    static <T, S extends org.apache.avro.specific.SpecificRecordBase>
    List<T>
    toObjectList(List<S> avroList, Class<T> objectType)
    Convert an Avro object list into a list of objects

    Methods inherited from class java.lang.Object

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

  • Method Details

    • toAvro

      public static <T extends org.apache.avro.specific.SpecificRecordBase> T toAvro(Object object, Class<T> avroType)
      Convert the given object into an Avro object
      Type Parameters:
      T - the desired Avro type
      Parameters:
      object - the source object
      avroType - the Avro class
      Returns:
      the converted Avro object
      Throws:
      AvroObjectConversionException - if the conversion has failed

    • toAvroList

      public static <T extends org.apache.avro.specific.SpecificRecordBase, S> List<T> toAvroList(List<S> objectList, Class<T> avroType)
      Convert an object list into a list of Avro objects
      Type Parameters:
      T - the desired Avro type
      S - the type of the objects that are contained in the list
      Parameters:
      objectList - the list that contains all objects that should be converted
      avroType - the Avro class
      Returns:
      a list with the converted Avro objects
      Throws:
      AvroObjectConversionException - if the conversion has failed

    • toObject

      public static <T> T toObject(org.apache.avro.specific.SpecificRecordBase avroRecord, Class<T> type)
      Convert the given Avro object into an object of the desired type
      Type Parameters:
      T - the desired object type
      Parameters:
      avroRecord - the Avro object to be converted
      type - the object class
      Returns:
      the target object
      Throws:
      AvroObjectConversionException - if the conversion has failed

    • toObjectList

      public static <T, S extends org.apache.avro.specific.SpecificRecordBase> List<T> toObjectList(List<S> avroList, Class<T> objectType)
      Convert an Avro object list into a list of objects
      Type Parameters:
      T - the desired object type
      S - the type of the objects that are contained in the list
      Parameters:
      avroList - the list that contains all Avro objects that should be converted
      objectType - the object class
      Returns:
      a list with the converted objects
      Throws:
      AvroObjectConversionException - if the conversion has failed