@SuppressWarnings("unchecked")
@Override
public Map.Entry<K, V> next() {
if ((index + 1) < leaf.size()) {
index++;
Entry entry = leaf.get(index);
return entry;
} else if (leaf.next() != null) {
leaf = leaf.next();
index = 0;
Entry entry = leaf.get(index);
return entry;
}
throw new NoSuchElementException();
}
public void mergeFrom(Node right) {
assert (right.size() == capacity / 2) || (size == capacity / 2)
: "Should have exactly half capacity nodes";
Leaf leaf = (Leaf) right;
shallowCopy(leaf, 0, this, size, leaf.size());
next = leaf.next();
size += leaf.size();
}
public Object put(Comparator comparator, Object key, Object val) {
Object oldVal;
int search = binarySearch(this, 0, size, key, comparator);
if (search > -1) {
Entry entry = get(search);
oldVal = entry.getValue();
entry.setValue(val);
} else if (size < capacity) {
oldVal = null;
search = -(search + 1);
insert(search, key, val);
} else {
Leaf next = Leaf.newInstance(capacity);
int halfSize = size / 2;
shallowCopy(this, halfSize, next, 0, halfSize);
clear(halfSize, size);
size = halfSize;
next.size = halfSize;
if (compare(comparator, key, next.firstKey()) < 0) {
put(comparator, key, val);
} else {
next.put(comparator, key, val);
}
next.next = this.next;
this.next = next;
oldVal = Node.Sentinal.SPLIT;
}
return oldVal;
}
@Override
public boolean hasNext() {
return (index + 1) < leaf.size() || leaf.next() != null;
}