xml - java - JAXB Null value -

maybe simple request, haven't found way it.

i have build xml output these one:

 <person name="mike">     <orders id="1">        <order ido="1"></order>     </orders>  </person> 

i have values query in db, in case querys returns no "orders" xml have this:

<person name="mike">     </orders> <person> 

is these possible?, know kind of strange requirement of client.

i know have case in our code often. define xml first xsd, , generate jaxb. so, orders 0..1, , list inside orders 1..n.

if annotating classes, think need this:

@xmlelement(name = "orders") protected list<order> orders;  public list<order> getorders() {     if (orders == null) {         orders = new arraylist<order>();     }     return this.orders; } 

this return list. if list empty, should <orders /> returned.