Hi Jakub,
Do you mean that JAXB is not writing out any start element for
"items" because the value of the items field is null or empty?
There may be an annotation to force JAXB to always write out "items":
1) using XmlElement(name="items", nillable=true); or
1) using XmlElementWrapper, the JavaDoc states:
http://java.sun.com/javase/6/docs/api/javax/xml/bind/annotation/XmlElementWrapper.html
The two serialized XML forms allow a null collection to be
represented either by absence or presence of an
element with a nillable attribute.
or it may be possible to utilize XmlJavaTypeAdapter.
Paul.
On Mar 9, 2009, at 4:47 PM, Jakub Podlesak wrote:
>
> Hi Moiz,
>
> You have hit an edge case, and i am afraid i have no good news for
> you.
> Jersey JSON provider takes what JAXB gives out, and the information
> about the emtpy array is obviously missing.
>
> One option would be to try out the provider mentioned by Tatu.
> Have you had a chance to test it yet?
>
> Another option would be to use the low-level JSONObect/JSONArray
> providers (used in bookmark example [1].
>
> ~Jakub
>
> [1]http://download.java.net/maven/2/com/sun/jersey/samples/bookmark/1.0.3-SNAPSHOT/bookmark-1.0.3-SNAPSHOT-project.zip
>
>
> On Fri, Mar 06, 2009 at 07:21:51AM -0800, Moiz Dohadwala wrote:
>> I have tried that too, but hasn't worked either.
>>
>> -Moiz
>>
>> From: Wilhelmsen Tor Iver [mailto:TorIverW_at_arrive.no]
>> Sent: Friday, March 06, 2009 5:01 AM
>> To: users_at_jersey.dev.java.net
>> Subject: Re: [Jersey] RE: array handling in JAXB to JSON conversion
>>
>> Try adding required=true to this:
>>
>> @XmlElement(name="items")
>> List<Item> items;
>>
>> or else tell JAXB to treat nulls and empty collections differently.
>> We ran into the same issue where null/empty elements were absent
>> from the XML and thus a JAXB client would generate classes missing
>> these properties.
>
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