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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  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  package org.apache.log4j;
19  
20  /**
21     CategoryKey is a wrapper for String that apparently accellerated
22     hash table lookup in early JVM's.
23     @author Ceki Gülcü 
24  */
25  class CategoryKey {
26  
27    String   name;  
28    int hashCache;
29  
30    CategoryKey(String name) {
31      this.name = name;
32      hashCache = name.hashCode();
33    }
34  
35    final
36    public  
37    int hashCode() {
38      return hashCache;
39    }
40  
41    final
42    public
43    boolean equals(Object rArg) {
44      if(this == rArg)
45        return true;
46      
47      if(rArg != null && CategoryKey.class == rArg.getClass()) 
48        return  name.equals(((CategoryKey)rArg ).name);
49      else 
50        return false;
51    }
52  }