XML serialization for Groovy classes

Question

For an application build on Spring MVC + Groovy + Google App Engine i need simple XML serializer/marchaller.

I'v tried:

• XStream - it doesn't work on Google App Engine, because it uses restricted (at GAE) classes
• Jaxb2 - it doesn't work with Groovy classes, because groovy class have additional (hidden) fields (like metaClass, etc)
• XmlBeans as I understand can be used only for deserializing from XML to Java Beans
• Castor seems to be big overhead (i don't need any XMLSchema and so on)

I want to just dump class to the corresponding XML, and i want to configure tag names using some simple config (java annotations, for ex), without XMLSchema/DTD

So, requirements is:

• usable at Google App Engine
• no XMLSchema/DTD
• simple configuration
• fast
• it's enough only object->xml
• maven2 support
• groovy support (or manually configured list of used fields)
• (optional) spring integration

Can anyone recommend me an good tool for this?

Answer 1

I don't know if there is a lib which fits your requirements, but you could take a look into that list: http://karussell.wordpress.com/2009/09/03/xml-serializers-for-java/

e.g. the simple lib is a good candidate