JAXB: How to add a Wrapper around XmlRootElement?

Question

How can I annotate a Bean for JAXB if I want to use such an XML file?

<myobjects>
    <myobject id="1" active="true">
        <...>
    </myobject>
    <myobject id="2" active="true">
        <...>
    </myobject>
    ...
    <myobject id="666666" active="true">
        <...>
    </myobject>
</myobjects>

...a list/collection of XmlRootElements is to be mapped to...

@XmlRootElement(name="myobject")
    public class XmlMyObjectDTO {
    private long id;

    public long getId() {
        return this.id;
    }
...
}

Answer 1

There are a couple of ways to handle this use case.

Option 1 - Introduce a New Top Level Class

You could introduce a new class called XmlMyObjectDTOs that contains a list of MyXmlObjectDTO objects. Alternatively you could write a generic wrapper class (see link to related answer below):

• Is it possible to programmatically configure JAXB?

Option 2 - Use JAXB with StAX

You can create an XMLStreamWriter to write out the root element and then marshal the collection of objects to the XMLStreamWriter.

• http://blog.bdoughan.com/2012/08/handle-middle-of-xml-document-with-jaxb.html