src/java/org/apache/log4j/CategoryKey.java

/*
 * Copyright 1999,2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.log4j;


/**
   CategoryKey is heavily used internally to accelerate hash table searches.
   @author Ceki Gülcü
*/
class CategoryKey {
  String name;
  int hashCache;

  CategoryKey(String name) {
    this.name = name.intern();
    hashCache = name.hashCode();
  }

  public final int hashCode() {
    return hashCache;
  }

  public final boolean equals(Object rArg) {
    if (this == rArg) {
      return true;
    }

    if ((rArg != null) && (CategoryKey.class == rArg.getClass())) {
      return name == ((CategoryKey) rArg).name;
    } else {
      return false;
    }
  }
}