DocValuesIterator

Advances to the first beyond the current whose document number is greater than or equal to target, and returns the document number itself. Exhausts the iterator and returns .NO_MORE_DOCS if target is greater than the highest document number in the set.

Advance the iterator to exactly target and return whether target has a value. target must be greater than or equal to the current .docID and must be a valid doc ID, ie. 0 and <maxDoc. After this method returns, .docID returns target.

Returns the estimated cost of this DocIdSetIterator.

Returns the following:

Load doc IDs into a FixedBitSet. This should behave exactly as if implemented as below, which is the default implementation:

Advances to the next document in the set and returns the doc it is currently on, or .NO_MORE_DOCS if there are no more docs in the set.

NOTE: after the iterator has exhausted you should not call this method, as it may result in unpredicted behavior.