01: package org.apache.ojb.broker.util;
02:
03: /* Copyright 2004-2005 The Apache Software Foundation
04: *
05: * Licensed under the Apache License, Version 2.0 (the "License");
06: * you may not use this file except in compliance with the License.
07: * You may obtain a copy of the License at
08: *
09: * 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;
19:
20: public class IdentityArrayList extends ArrayList {
21: public boolean contains(Object elem) {
22: return indexOf(elem) >= 0;
23: }
24:
25: public int indexOf(Object elem) {
26: for (int i = 0; i < size(); i++)
27: if (elem == get(i))
28: return i;
29: return -1;
30: }
31:
32: public int lastIndexOf(Object elem) {
33: for (int i = size() - 1; i >= 0; i--)
34: if (elem == get(i))
35: return i;
36: return -1;
37: }
38: }
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