/**
* Returns a sub-view, backed by this one, whose keys are less than or equal to the given key.
* Ownership of the key instance is transferred, and so it must not be modified after calling this
* method.
*
* <p>The returned view will throw a {@link ViewConstraintException} on an attempt to insert a key
* outside its range.
*
* @throws UnsupportedOperationException if view is unordered
* @throws NullPointerException if key is null
*/
public default View viewLe(byte[] key) {
Ordering ordering = getOrdering();
if (ordering == Ordering.ASCENDING) {
return BoundedView.viewLe(this, key);
} else if (ordering == Ordering.DESCENDING) {
return BoundedView.viewLe(viewReverse(), key).viewReverse();
} else {
throw new UnsupportedOperationException("Unsupported ordering: " + ordering);
}
}
