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package com.dahuatech.hutool.core.map;

import java.util.Map;

/**
 * 自定义键的Map,默认HashMap实现
 *
 * @author Looly
 * @param  键类型
 * @param  值类型
 * @since 4.0.7
 */
public abstract class CustomKeyMap extends MapWrapper {
  private static final long serialVersionUID = 4043263744224569870L;

  /**
   * 构造
* 通过传入一个Map从而确定Map的类型,子类需创建一个空的Map,而非传入一个已有Map,否则值可能会被修改 * * @param m Map 被包装的Map * @since 3.1.2 */ public CustomKeyMap(Map m) { super(m); } @Override public V get(Object key) { return super.get(customKey(key)); } @SuppressWarnings("unchecked") @Override public V put(K key, V value) { return super.put((K) customKey(key), value); } @Override public void putAll(Map m) { for (Map.Entry entry : m.entrySet()) { this.put(entry.getKey(), entry.getValue()); } } @Override public boolean containsKey(Object key) { return super.containsKey(customKey(key)); } /** * 自定义键 * * @param key KEY * @return 自定义KEY */ protected abstract Object customKey(Object key); }




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