R- The generic type of the [R]elation elements of the
public interface IAbstractAccessPath<R>
|Modifier and Type||Method and Description|
The constraints on the
True iff the access path is empty (there are no matches for the
Return the maximum #of elements spanned by the
Remove all elements selected by the
IPredicate) This is more conclusive than
#rangeCount()since you MAY have a non-zero range count when the key range is in fact empty (there may be "deleted" index entries within the key range).
long rangeCount(boolean exact)
Note: When there is an
IFilter on the
exact range count MUST apply that
IFilter, which means that it
will be required to traverse the index counting tuples which pass the
IFilters are ignored for the fast
true, the result will be an exact count and may require a key-range scan. When
false, the result will be an upper bound IFF delete markers are provisioned for the backing index (delete markers are required for transactions and for scale-out indices).
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