/*
 * 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.fory.collection;

import java.util.Map;
import java.util.Objects;

/** Map Entry implementation of {@link Map.Entry}. */
public class MapEntry<K, V> implements Map.Entry<K, V> {
  private final K key;
  private V value;

  public MapEntry(K key, V value) {
    this.key = key;
    this.value = value;
  }

  @Override
  public K getKey() {
    return key;
  }

  @Override
  public V getValue() {
    return value;
  }

  @Override
  public V setValue(V value) {
    V o = this.value;
    this.value = value;
    return o;
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    MapEntry<?, ?> mapEntry = (MapEntry<?, ?>) o;
    return Objects.equals(key, mapEntry.key) && Objects.equals(value, mapEntry.value);
  }

  @Override
  public int hashCode() {
    return Objects.hash(key, value);
  }
}
