ClassDescriptorMap classDescriptorMap = new ClassDescriptorMap(this);
FaultFactory faultFactory = new SingletonFaultFactory();
// add factories in reverse of the desired chain order
classDescriptorMap.addFactory(new ValueHolderDescriptorFactory(classDescriptorMap));
classDescriptorMap.addFactory(new DataObjectDescriptorFactory(classDescriptorMap, faultFactory));
// since ClassDescriptorMap is not synchronized, we need to
// prefill
// it with entity proxies here.
for (DataMap map : maps) {