1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.collections.primitives.decorators;
18
19 import org.apache.commons.collections.primitives.DoubleIterator;
20
21 /**
22 *
23 * @since Commons Primitives 1.0
24 * @version $Revision: 480463 $ $Date: 2006-11-29 03:15:23 -0500 (Wed, 29 Nov 2006) $
25 *
26 * @author Rodney Waldhoff
27 */
28 public final class UnmodifiableDoubleIterator extends ProxyDoubleIterator {
29 UnmodifiableDoubleIterator(DoubleIterator iterator) {
30 this.proxied = iterator;
31 }
32
33 public void remove() {
34 throw new UnsupportedOperationException("This DoubleIterator is not modifiable.");
35 }
36
37 protected DoubleIterator getIterator() {
38 return proxied;
39 }
40
41 public static final DoubleIterator wrap(DoubleIterator iterator) {
42 if(null == iterator) {
43 return null;
44 } else if(iterator instanceof UnmodifiableDoubleIterator) {
45 return iterator;
46 } else {
47 return new UnmodifiableDoubleIterator(iterator);
48 }
49 }
50
51 private DoubleIterator proxied = null;
52 }