JAXB - can class containment be flattened when sorting XML?

Question

Let's say I have two classes:

@XmlRootElement
class A {
    @XmlElement
    String propertyOfA;
    @XmlElement
    B b;
}

class B {
    @XmlElement
    String propertyOfB;
} 

JAXB returns XML formatted as follows:

<a>
  <propertyOfA>valueA</propertyOfA>
  <b>
    <propertyOfB>valueB</propertyOfB>
  </b>
</a>

My question is how to smooth the hierarchy in XML? So that I have:

<a>
  <propertyOfA>valueA</propertyOfA>
  <propertyOfB>valueB</propertyOfB>
</a>

Can this be done with annotations?

Right now I'm going to create a wrapper class for A that constructs the fields the way I want to see them in XML. Is there a better way?

Answer 1

Note. I am EclipseLink JAXB (MOXy) and a member of the JAXB 2 group (JSR-222) .

MOXy @XmlPath :

import java.xml.bind.annotation.*;
import org.eclipse.persistence.oxm.annotations.XmlPath;

@XmlRootElement
class A {
    @XmlElement
    String propertyOfA;

    @XmlPath(".")
    B b;
}

• http://blog.bdoughan.com/2010/07/xpath-based-mapping.html
• http://blog.bdoughan.com/2010/09/xpath-based-mapping-geocode-example.html
• http://blog.bdoughan.com/2011/03/map-to-element-based-on-attribute-value.html
• http://blog.bdoughan.com/2011/05/specifying-eclipselink-moxy-as-your.html

Answer 2

- , :

@XmlRootElement
class A {
    @XmlElement
    String propertyOfA;
    @XmlElement(name="propertyOfB")
    B b;
}
@XmlType(name="")
class B {
    @XmlValue
    String propertyOfB;
} 

: - . , .

Answer 3

: Spring RESTful client:

.

Answer 4

( JAXB) @XmlJavaTypeAdapter. , , . , A, . , , , , . , , - , , , .