Hi folks!
First of all, what does 'deduplicateObjects' do?
When switched on, it will effectively serialise any Object (other than a native
or a JsonValue) only once.
Any further occurence in the Object-graph will be serialised as JsonPointer.
Person sarah = new Person("Sarah");
Person clemens = new Person("Clemens");
clemens.setMother(sarah);
Person[] family = new Person[]{sarah, clemens};
Transformed to JSON this will now look like the following:
[{"name":"Sarah"},{"name":"Clemens","mother":"/0"}]
Notice the "/0" which is a JsonPointer to Sarah.
Sometimes it's not feasible to enable the 'deduplicateObjects' feature on a
general base.
E.g. when used with JsonB in JAX-RS we probably only want to use it when
serialising a few specific objects.
Should we somehow support toggling this feature via an Annotation?
And how does this look like?
I think we don't need to ship this for 1.1.4, but we should take a bit time and
look at it from a broader perspective.
This feature can now be enabled via
MapperBuilder#setDeduplicateObjects(true);
ConfigurableJohnzonProvider for JAX-RS and
JsonbConfig.setProperty("johnzon.deduplicateObjects", true);
I think we're good to go for 1.1.4 and then improve with the annotation driven
idea later on.
LieGrue,
strub
