Making classes serializable
Making schema-derived classes serializable
According to the Java Persistence API specification, section 2.1, entities must implement the serializable interface:
If an entity instance is to be passed by value as a detached object (e.g., through a remote interface), the entity class must implement the Serializable interface.
Hyperjaxb2 itself does not enforce serializable classes generation, you should use the jaxb:serializable global bindings customization element to make your model serializable:
bindings.xjb
<jaxb:bindings version="1.0" xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <jaxb:bindings schemaLocation="schema.xsd" node="/xsd:schema"> <jaxb:globalBindings localScoping="toplevel"> <jaxb:serializable/> </jaxb:globalBindings> </jaxb:bindings> </jaxb:bindings>