Issue with serializing Hibernate objects using XStream

Question

I\'ve been facing this issue where, the hibernate objects on serialization produces unexpect xmls containing all the instrumented code from Hibernate.

We did some cleani

Answer 1

I've came up with somewhat sufficient solution. In my application, only PersistentSets were messing up XML generated by XStream. So I have added another Converter to XStream (which runs with open Hibernate Session and live objects):

XStream xs = new XStream();
xs.registerConverter(new CollectionConverter(xs.getMapper()) {
    @Override
    public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) {
        org.hibernate.collection.PersistentSet ps = (PersistentSet) source;
        super.marshal(new HashSet(ps), writer, context);
    }

    @Override
    public boolean canConvert(Class type) {
        return type.isAssignableFrom(org.hibernate.collection.PersistentSet.class);
    }
}, XStream.PRIORITY_VERY_HIGH);
String s = xs.toXML(processInstance);

The serialized XML looks like below:

  
    
      813017
      
        1310832421216
        GMT
      
      process.log.action-performed
      Wydrukuj wniosek
      GENERATE_APPLICATION
      PERFORM_ACTION
      
      
      
    
    
      808211
      
        1310828206169
        GMT
      
      process.log.action-performed
      Zaakceptuj
      ACCEPT
      PERFORM_ACTION
      
      
      
    

In my case, the class attribute was not important, so I have ignored its value. You can of course tinker with it.