On Mar 31, 2009, at 3:47 PM, Kytömäki, Janne wrote:
> Hi,
>
>>> Another question: is it possible to do the same (sub-class) with
>>> JSON? Maybe with jettison notation?
>
> I'd also like to get de-serialization of JSON objects
> with inheritance working, but haven't figured out how to do it yet,
> at least with the default JSON notation. For example:
>
> @GET
> @Path("/animals/")
> public AnimalList getAnimals(){
> AnimalList al = new AnimalList();
> al.addAnimal(new Dog("Fifi"));
> al.addAnimal(new Cat("Daisy"));
> return al;
> }
>
> @PUT
> @Path("/animals/")
> public Animal addAnimal(Animal a){
> return a;
> }
>
> .. where:
>
> @XmlRootElement(name="animalList")
> public class AnimalList{
> private List<Animal> animals = new ArrayList<Animal>();
> ..
> }
>
> @XmlRootElement(name="animal")
> public class Animal {
> private String name;
> ..
> }
>
> @XmlRootElement(name="cat")
> public class Cat extends Animal {
> ..
> }
>
> @XmlRootElement(name="dog")
> public class Dog extends Animal {
> ..
> }
>
> Cat and Dog classes need to be set up in the JAXB context, like
> Paul wrote.
Thanks, hopefully that example will help Ido.
<snip>
> Default JSON notation doesn't support property namespaces, so the
> "xsi:type" property isn't passed to JAXB and the object
> is deserialized as an instance of the superclass. Not sure
> why the root element doesn't translate to the correct subclass
> in this example, but even if it did, it wouldn't help in the
> cases, where the subclass is not the root element but a
> subproperty.
>
> Another example can be found in jersey issue 113:
> https://jersey.dev.java.net/issues/show_bug.cgi?id=113
>
> Could passing the xsi:type from JSON to JAXB in de-serialization
> be possible with the other JSON notations?
>
Jakub, what do you think?
Paul.