public class KeyInfo implements Comparable<KeyInfo> {
  private final String id;
  private final type type;

  // --- コンストラクタ、Getter/Setterは省略 ---

  @Override
  public int compareTo(final KeyInfo info) {
    // TreeMap向け メソッド
    if(StringUtils.equals(info.id, this.id)
        && info.type == this.type)
      return 0;
    else
      return -1;
  }
  @Override
  public boolean equals(Object arg0) {
    // HashMap向け メソッド
    if(arg0 instanceof KeyInfo && compareTo((KeyInfo)arg0) == 0) {
      return true;
    }
    return super.equals(arg0);
  }
  @Override
  public int hashCode() {
    // HashMap向け メソッド
    return HashCodeBuilder.reflectionHashCode(this, new String[]{}/*exclude*/);
  }
}