JaxB：为特定数据类型定义默认@XmlElements

Question

As shown below JaxB provides for children to be differentiated by the tag name.

@XmlElements({
    @XmlElement(name="horse", type=Horse.class),
    @XmlElement(name="cow", type=Cow.class)
})
private Animal animal;

But how can I implement the desired functionality by default. Every Animal within the document should have the choice of Horse or Cow but I don't want to type the @XmlElements every time ?

Answer 1

It seems the solution is @XmlSeeAlso

http://docs.oracle.com/javaee/6/api/javax/xml/bind/annotation/XmlSeeAlso.html