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POMarshalling a List of objects implementing a common interface, with JaxB
 

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    <p>I am trying to marshall a list of objects implementing a common interface. There are 3 classes and 1 interface involved:</p> <p><strong>Community</strong> class (has one method: <strong>List&lt;Person&gt; getPeople();</strong>)</p> <p><strong>Person</strong> interface (has one method: <strong>String getName();</strong>)</p> <p><strong>Girl</strong> class (implements Person)</p> <p><strong>Boy</strong> class (implements Person)</p> <p>See code below.</p> <p>I want an XML that looks something like this:</p> <pre><code>&lt;community&gt; &lt;people&gt; &lt;girl&gt; &lt;name&gt;Jane&lt;/name&gt; &lt;/girl&gt; &lt;boy&gt; &lt;name&gt;John&lt;/name&gt; &lt;/boy&gt; &lt;girl&gt; &lt;name&gt;Jane&lt;/name&gt; &lt;/girl&gt; &lt;boy&gt; &lt;name&gt;John&lt;/name&gt; &lt;/boy&gt; &lt;/people&gt; &lt;/community&gt; </code></pre> <p>or possibly:</p> <pre><code>&lt;community&gt; &lt;people&gt; &lt;person&gt; &lt;girl&gt; &lt;name&gt;Jane&lt;/name&gt; &lt;/girl&gt; &lt;/person&gt; &lt;person&gt; &lt;boy&gt; &lt;name&gt;John&lt;/name&gt; &lt;/boy&gt; &lt;/person&gt; &lt;/people&gt; &lt;/community&gt; </code></pre> <p>So far what I get is this:</p> <pre><code>&lt;community&gt; &lt;people&gt; &lt;person xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="girl"&gt; &lt;name&gt;Jane&lt;/name&gt; &lt;/person&gt; &lt;person xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="boy"&gt; &lt;name&gt;John&lt;/name&gt; &lt;/person&gt; &lt;person xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="girl"&gt; &lt;name&gt;Jane&lt;/name&gt; &lt;/person&gt; &lt;person xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="boy"&gt; &lt;name&gt;John&lt;/name&gt; &lt;/person&gt; &lt;/people&gt; &lt;/community&gt; </code></pre> <p>I realize I can change the element to something else, but I want the element name to be the name spesified in the Girl or Boy class.</p> <p>Can this be done? Thanks.</p> <pre><code>@XmlRootElement(name = "community") public class Community { private List&lt;Person&gt; people; @XmlElementWrapper @XmlElement(name="person") public List&lt;Person&gt; getPeople() { return people; } public Community() { people = new ArrayList&lt;Person&gt;(); people.add(new Girl()); people.add(new Boy()); people.add(new Girl()); people.add(new Boy()); } } @XmlRootElement(name = "girl") public class Girl implements Person { @XmlElement public String getName() { return "Jane"; } } @XmlRootElement(name = "boy") public class Boy implements Person { @XmlElement public String getName() { return "John"; } } @XmlJavaTypeAdapter(AnyTypeAdapter.class) public interface Person { public String getName(); } public class AnyTypeAdapter extends XmlAdapter&lt;Object, Object&gt; { @Override public Object marshal(Object v) throws Exception { return v; } @Override public Object unmarshal(Object v) throws Exception { return v; } } </code></pre>
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