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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 G&uuml;lc&uuml;
    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  }