I needed to add an elementType to JBossXmlCollection to allow for the specification of the collection element type for collections of unparameterized interfaces like: | @XmlType(name="service-refType") | public class JBossServiceReferencesMetaData | extends AbstractMappedMetaData<IServiceReferenceMetaData> | implements IServiceReferencesMetaData | { | ... | so one can define both the collection class, and its concrete element type: | @JBossXmlCollection(type=JBossServiceReferencesMetaData.class, elementType=JBossServiceReferenceMetaData.class) | @XmlElement(name="service-ref") | public void setServiceReferences(IServiceReferencesMetaData serviceReferences) | { | this.serviceReferences = (JBossServiceReferencesMetaData) serviceReferences; | } | Can you check its use in the JBossXBNoSchemaBuilder? There was one location where I was not clear on whether this should override the localPropertyType. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4098091#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...