public interface UnfilteredRowIterator extends BaseRowIterator<Unfiltered>
 An UnfilteredRowIterator contains a few partition top-level informations and is an
 iterator of Unfiltered, that is of either Row or RangeTombstoneMarker.
 An implementation of UnfilteredRowIterator must provide the following
 guarantees:
   1. the returned Unfiltered must be in clustering order, or in reverse clustering
      order iff BaseRowIterator.isReverseOrder() returns true.
   2. the iterator should not shadow its own data. That is, no deletion
      (partition level deletion, row deletion, range tombstone, complex
      deletion) should delete anything else returned by the iterator (cell, row, ...).
   3. every "start" range tombstone marker should have a corresponding "end" marker, and no other
      marker should be in-between this start-end pair of marker. Note that due to the
      previous rule this means that between a "start" and a corresponding "end" marker there
      can only be rows that are not deleted by the markers. Also note that when iterating
      in reverse order, "end" markers are returned before their "start" counterpart (i.e.
      "start" and "end" are always in the sense of the clustering order).
 Note further that the objects returned by next() are only valid until the
 next call to hasNext() or next(). If a consumer wants to keep a reference on
 the returned objects for longer than the iteration, it must make a copy of
 it explicitly.
| Modifier and Type | Method and Description | 
|---|---|
| default boolean | isEmpty()Returns whether this iterator has no data (including no deletion data). | 
| DeletionTime | partitionLevelDeletion()The partition level deletion for the partition this iterate over. | 
| EncodingStats | stats()Return "statistics" about what is returned by this iterator. | 
columns, isReverseOrder, metadata, partitionKey, staticRowcloseDeletionTime partitionLevelDeletion()
EncodingStats stats()
default boolean isEmpty()
isEmpty in interface BaseRowIterator<Unfiltered>Copyright © 2018 The Apache Software Foundation