Re: [json-lib-user] Default values when converting from Java beans to JSON objects

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

Florian,
Using a map will work because maps do not carry type information for a property,
only names and values =)

Cheers,
Andres
 
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----- Mensaje original ----
De: Florian Shkurti <flo...@gm...>
Para: jso...@li...
Enviado: jueves, 5 de julio, 2007 12:44:47
Asunto: Re: [json-lib-user] Default values when converting from Java beans to JSON objects

Hi Andres,

Here's a reply to myself :-) that might provide some sort
of solution to the previous problem (although it is as elegant
as an elephant)

We can create a Map<Object, Object> that will contain

all the names of the fields from the Java bean that we want 
to convert into a JSONObject associated to their values.

Instead of converting the Java bean into a JSONObject
we can convert the map. In fact both


JSONObject.fromBean( map ) and
JSONObject.fromMap( map )

seem to work as expected. I am not sure whether there
are any subtle complications with this approach, but it seems
to solve my problem (at least at the moment...)


Thanks agin,
Florian   




On 7/5/07, Florian Shkurti <flo...@gm...> wrote:
Hi Andres,

I have the following Java bean class:

public class MyBean {


     private Integer myInt;

     private String myString;

     public MyBean(){
          this.myInt = null;
          
this.myString = null; 
     }

      //getters & setters
 }

 
When I try to convert this bean into a JSON object using
JSONObject.fromBean( new MyBean() )

I get { "myInt": 0, "myString": "" } instead of what I would

expect, namely { "myInt": null, "myString": null }. 

Is there a way to get the second JSONObject, which is
what I intuitively expect?

Thanks in advance,
Florian      


     


    
    




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