Databinding and null values

[Luciano Resende]

When the JSON Databinding produces JSON from a POJO it's generating
contents from the null attributes (see example below)

{
    "id": "000020550372",
    "links": [
        {
            "href": "http://localhost/000020550372";,
            "type": null
        },
        {
            "href": "http://localhost/000020550372/xxx";,
            "type": null
        }
    ]
}

For performance reasons, I'd like to have a more clean/compact JSON
output that would avoid generating the null elements.
Is there an easy way to do that with the Databinding Framework ?

-- 
Luciano Resende
http://people.apache.org/~lresende
http://twitter.com/lresende1975
http://lresende.blogspot.com/