Forward only Iterator for query results. Data is fetched lazily in batches
as it is required. Instances of this class are created when iterator()
is called on the results of a JDOQL query. This supports multithreaded
PM access by synchronizing some operations on the PM proxy.
See Also:com.versant.core.jdo.ForwardQueryResult See Also:RandomAccessQueryResult See Also:QueryDetails.setResultBatchSize