1 /*
2 * Copyright (c) 2003, Henri Yandell
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or
6 * without modification, are permitted provided that the
7 * following conditions are met:
8 *
9 * + Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 *
12 * + Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * + Neither the name of Genjava-Core nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32 package com.generationjava.collections;
33
34 import java.util.ArrayList;
35 import java.util.Collection;
36 import java.util.List;
37
38 /***
39 * Only allows N elements in. Once size N is reached, all
40 * new adds are ignored and inserts mean the one on the end
41 * of the list is removed.
42 */
43 public class LimitedList extends ProxyList {
44
45 private int capacity;
46
47 public LimitedList(int capacity) {
48 this(new ArrayList(), capacity);
49 }
50
51 public LimitedList(List list, int capacity) {
52 super(list);
53 this.capacity = capacity;
54 }
55
56 public boolean isFull() {
57 return (this.capacity == size());
58 }
59
60 public boolean add(Object obj) {
61 if(isFull()) {
62 return false;
63 } else {
64 return super.add(obj);
65 }
66 }
67
68 public boolean addAll(Collection coll) {
69 if(this.capacity <= size() + coll.size()) {
70 return false;
71 } else {
72 return super.addAll(coll);
73 }
74 }
75
76 public boolean addAll(int i, Collection coll) {
77 if(this.capacity <= size() + coll.size()) {
78 return false;
79 } else {
80 return super.addAll(i,coll);
81 }
82 }
83
84 /// TODO
85 public boolean retainAll(Collection coll) {
86 return super.retainAll(coll);
87 }
88
89 public void add(int i, Object obj) {
90 if(this.capacity == i) {
91 return;
92 } else
93 if(isFull()) {
94 super.remove(this.capacity-1);
95 super.add(i,obj);
96 } else {
97 super.add(i,obj);
98 }
99 }
100
101 public String toString() {
102 return super.toString();
103 }
104
105 }
This page was automatically generated by Maven