content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.cassandra.utils;
  
  import java.util.Map;
  import java.util.Objects;
  
  public class MutableEntry<K, V> implements Map.Entry<K, V>
  {
      private final K k;
      private V v;
  
      public MutableEntry(K k, V v)
      {
          this.k = k;
          this.v = v;
      }
  
      @Override
      public K getKey()
      {
          return k;
      }
  
      @Override
      public V getValue()
      {
          return v;
      }
  
      @Override
      public V setValue(V value)
      {
          V previous = v;
          v = Objects.requireNonNull(value);
          return previous;
      }
  
      @Override
      public boolean equals(Object o)
      {
          if (this == o) return true;
          if (o == null || !(o instanceof Map.Entry)) return false;
          Map.Entry<?, ?> that = (Map.Entry<?, ?>) o;
          return Objects.equals(k, that.getKey()) && Objects.equals(v, that.getValue());
      }
  
      @Override
      public int hashCode()
      {
          return Objects.hash(k, v);
      }
  
      @Override
      public String toString()
      {
          return k + "=" + v;
      }
  }
  