Re: [json-lib-user] Question about null Number serialization

[Andres A. <aal...@ya...>]

Anil,

That is the expected behavior because numbers in JSON can never by null, only objects.
It may be a bit confusing at first because numbers in java come in two flavors: primitive
and wrappers, wrappers being objects after all.

But there is a way to override this behavior, you may register a DefaultValueProcessor to
return whatever value (any valid json value that is) that your app requires.

Cheers,
Andres
 
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----- Original Message ----
From: Anil Gangolli <an...@bu...>
To: jso...@li...
Sent: Monday, February 4, 2008 5:04:11 PM
Subject: [json-lib-user] Question about null Number serialization






Apologies if this is a FAQ,
but I tried for some time to find it and couldn't.



If I have a bean with a Long or Number property, e.g.



class TestBean {

   private Long number = null;



   public Long getNumber() { return number; }

   public void setNumber(Long number) { this.number = number; } 

}



and serialize an instance where the "number" property is null,  for
example using



JSONSerializer.toJSON(new TestBean()).toString()



it gives the result



{"number":0}



and deserializing this gives an instance that is not equal to the
original.



Is this expected or a bug?



I was expecting a serialized form of 



{"number":null}



which, when deserialized does give me an instance equal to the original.



--a.










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