Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ListableBase |
|
| 1.375;1.375 |
1 | /* | |
2 | * Copyright 2001-2004 The Apache Software Foundation | |
3 | * | |
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 | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
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. | |
15 | */ | |
16 | package org.apache.commons.cache.adt; | |
17 | ||
18 | /** | |
19 | * An base implementation of {@link Listable}, supporting | |
20 | * singly-linked lists. | |
21 | * | |
22 | * @version $Id: ListableBase.java 155435 2005-02-26 13:17:27Z dirkv $ | |
23 | * @author Rodney Waldhoff | |
24 | */ | |
25 | public class ListableBase implements Listable, Cloneable { | |
26 | ||
27 | /** My following sibling. */ | |
28 | 0 | protected transient Listable _next = null; |
29 | ||
30 | /** | |
31 | * No arg constructor. | |
32 | * Equivalent to {@link #ListableBase(org.apache.commons.cache.adt.Listable) <tt>ListableBase(null)</tt>}. | |
33 | */ | |
34 | 0 | public ListableBase() { |
35 | 0 | } |
36 | ||
37 | /** | |
38 | * Constructor. | |
39 | * @param next the next element in the list. | |
40 | */ | |
41 | 0 | public ListableBase(Listable next) { |
42 | 0 | _next = next; |
43 | 0 | } |
44 | ||
45 | public Listable getNext() { | |
46 | 0 | return _next; |
47 | } | |
48 | ||
49 | public boolean hasNext() { | |
50 | 0 | return (null != _next); |
51 | } | |
52 | ||
53 | public void setNext(Listable next) { | |
54 | 0 | _next = next; |
55 | 0 | } |
56 | ||
57 | /** | |
58 | * Throws {@link UnsupportedOperationException}. | |
59 | */ | |
60 | public Listable getPrev() throws UnsupportedOperationException { | |
61 | 0 | throw new UnsupportedOperationException(); |
62 | } | |
63 | ||
64 | /** | |
65 | * Throws {@link UnsupportedOperationException}. | |
66 | */ | |
67 | public boolean hasPrev() throws UnsupportedOperationException { | |
68 | 0 | throw new UnsupportedOperationException(); |
69 | } | |
70 | ||
71 | /** | |
72 | * Throws {@link UnsupportedOperationException}. | |
73 | */ | |
74 | public void setPrev(Listable prev) throws UnsupportedOperationException { | |
75 | 0 | throw new UnsupportedOperationException(); |
76 | } | |
77 | } |