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Java > Open Source Codes > org > apache > log4j > CategoryKey


1 /*
2  * Copyright 1999-2005 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
17 package org.apache.log4j;
18
19 /**
20    CategoryKey is heavily used internally to accelerate hash table searches.
21    @author Ceki Gülcü
22 */
23 class CategoryKey {
24
25   String JavaDoc name;
26   int hashCache;
27
28   CategoryKey(String JavaDoc name) {
29     this.name = name.intern();
30     hashCache = name.hashCode();
31   }
32
33   final
34   public
35   int hashCode() {
36     return hashCache;
37   }
38
39   final
40   public
41   boolean equals(Object JavaDoc rArg) {
42     if(this == rArg)
43       return true;
44     
45     if(rArg != null && CategoryKey.class == rArg.getClass())
46       return name == ((CategoryKey)rArg ).name;
47     else
48       return false;
49   }
50 }
51
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