a way to convert appengine datastore Entity to my object?

Question

Using google appengine 1.3.0 w/ java and jdo...

While trying to write JDO querys for 1-to-many owned relationships, I came across a non-JDO concept that I thought was really smart. Ancestor Querys. The appengine.api.datastore.Query interface allows for scoping of a query using the parent Key.

Unfortunately the results from the query are 'Entity' objects with property lists. Is there a util in the apis that will convert one of these Entity objects into my JDO object or even a simple DTO bean (that matched my JDO object)?

I've taken a crack a brute forcing it with the code below but don't like the double lookup.

 PersistenceManager pm;
 DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();  
 List<MyObject> results;

 com.google.appengine.api.datastore.Query query = new Query( "MyObject", KeyFactory.stringToKey( parentId ) );
 query.addFilter("rank", Query.FilterOperator.GREATER_THAN_OR_EQUAL, minRank );
 query.addSort("rank");
 query.setKeysOnly();
 for (Entity anEntity : datastore.prepare(query).asIterable()) {
  results.add( pm.getObjectById( MyObject.class, anEntity.getKey() ) );
 }