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Java > Open Source Codes > org > apache > ojb > broker > util > IdentityArrayList


1 package org.apache.ojb.broker.util;
2
3 /* Copyright 2004-2005 The Apache Software Foundation
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * 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
18 import java.util.ArrayList JavaDoc;
19
20 public class IdentityArrayList extends ArrayList JavaDoc
21 {
22     public boolean contains(Object JavaDoc elem)
23     {
24         return indexOf(elem) >= 0;
25     }
26
27     public int indexOf(Object JavaDoc elem)
28     {
29         for(int i = 0; i < size(); i++)
30             if(elem == get(i))
31                 return i;
32         return -1;
33     }
34
35     public int lastIndexOf(Object JavaDoc elem)
36     {
37         for(int i = size() - 1; i >= 0; i--)
38             if(elem == get(i))
39                 return i;
40         return -1;
41     }
42 }
43
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