ProtoField for abstract class about protostream HOT 7 CLOSED

abstract class Animal {
  String type;
}

class Dog extends Animal {
  String name;
  void bark();
  // ...
}

package com.test;

import org.infinispan.protostream.annotations.ProtoAdapter;
import org.infinispan.protostream.annotations.ProtoFactory;
import org.infinispan.protostream.annotations.ProtoField;

@ProtoAdapter(CachedAnimal.class)
public class CachedAnimalAdapter {
    @ProtoFactory
    CachedAnimal create(Animal animal, String cacheDuration) {
        return new CachedAnimal(animal, cacheDuration);
    }

    @ProtoField(number = 1)
    Animal getAnimal(CachedAnimal cachedAnimal) {
        return cachedAnimal.getAnimal();
    }

    @ProtoField(number = 2)
    String getCacheDuration(CachedAnimal cachedAnimal) {
        return cachedAnimal.getCachedTime();
    }
}

// Let's say the below classes are from a 3rd party library that I cannot annotate
class CachedAnimal {
    private Animal animal;
    private String cachedTime;

    public CachedAnimal(Animal animal, String cachedTime) {
        this.animal = animal;
        this.cachedTime = cachedTime;
    }

    public Animal getAnimal() {
        return animal;
    }

    public String getCachedTime() {
        return cachedTime;
    }
}

abstract class Animal {
    String type;

    public Animal(String type) {
        this.type = type;
    }
}

class Dog extends Animal {
    private String breed;

    public Dog(String type, String breed) {
        super(type);
        this.breed = breed;
    }

    public void makeSound() {
        System.out.println("woof");
    }
}

class Cat extends Animal {
    private String name;

    public Cat(String type, String name) {
        super(type);
        this.name = name;
    }

    public void makeSound() {
        System.out.println("meow");
    }
}