2 * (C) Copyright 2017 Pantheon Technologies, s.r.o. and others.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.opendaylight.yangtools.triemap;
18 import java.util.Map.Entry;
21 * This iterator is a read-only one and does not allow for any update
22 * operations on the underlying data structure.
24 * @param <K> the type of keys
25 * @param <V> the type of values
27 final class TrieMapReadOnlyIterator<K, V> extends TrieMapIterator<K, V> {
28 TrieMapReadOnlyIterator (final int level, final TrieMap<K, V> ct, final boolean mustInit) {
29 super (level, ct, mustInit);
32 TrieMapReadOnlyIterator (final int level, final TrieMap<K, V> ct) {
33 this (level, ct, true);
37 assert (ct.isReadOnly ());
42 public void remove () {
43 throw new UnsupportedOperationException ("Operation not supported for read-only iterators");
47 Entry<K, V> nextEntry(final Entry<K, V> rr) {
48 // Return non-updatable entry