Mapping classes to XML nodes

Hi there,
I am not entirely sure, if this is the right section of this forum. If not, can any moderator please put it into the right section? Thank you.
So here's the problem:
Let's assume, we have a class Car which associates loads of Part classes. Example:
public class Car {
    private List<Part> parts;
}The classes are Entities, and we are using Hibernate and JPA annotations to persist them.
Using Java-WS with Netbeans, that would result in a (simplified) XML structure like this:
<car>
  <parts>
    <part>
    </part>
  </parts>
</car>What I want to do now is to map the parts directly into the car node (skipping the <parts> node altogether), like this:
<car>
  <part>
  </part>
  <part>
  </part>
</car>I am aware that this is NOT good style. However, I have to stick to the non-standard requirements of the clients who use the SOAP interface later. Also I must not change the underlying database structure.
Is there a way to solve this with existing Annotations?
Thanks in advance!

JAXB will create classes from an XML schema, SAX is a parser library and JAXP is a library of XML a bunch of XML tools.
I don't care for JAXB too much. I would skip it and go right to the JAX-RPC spec (WebServices).

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