Mybatis条件iftest如何使用枚举值

package com.weather.weatherexpert.common.utils;

public enum City {
    XINZHOU(100002,"忻州"),
    DATONG(100003,"大同"),
    TaiYUAN(100001,"太原");
 
    private final Integer code;
    private final String name;
 
    City(Integer value, String desc) {
        this.code = value;
        this.name = desc;
    }
 
    public Integer getCode() {
        return code;
    }
 
    public String getName() {
        return name;
    }
}

<!--<if test="cityName == @com.weather.weatherexpert.common.utils.City.XINZHOU@getName">&lt;!&ndash;wrong,java.lang.ClassNotFoundException: Unable to resolve class: com.weather.weatherexpert.common.utils.City.XINZHOU&ndash;&gt;-->
<!--<if test="cityName == @com.weather.weatherexpert.common.utils.City@XINZHOU@getName">&lt;!&ndash;wrong,[org.apache.ibatis.ognl.ParseException: Encountered " "@" "@ "" at line 1, column 65.&ndash;&gt;-->
<if test="cityName == @com.weather.weatherexpert.common.utils.City@XINZHOU.getName"><!--right-->
	area_table
</if>
 
where 1=1
<if test="cityName == @com.weather.weatherexpert.common.utils.City@XINZHOU.getName"><!--right-->
	and city_name=#{cityName}
</if>	

package com.weather.weatherexpert.common.utils;

public class CityClass {
    public static enum CityEnum {
 
        XINZHOU(100002, "忻州"),
        DATONG(100003, "大同"),
        TAIYUAN(100001, "太原");
 
        private final Integer code;
        private final String name;
 
        CityEnum(Integer value, String desc) {
            this.code = value;
            this.name = desc;
        }
 
        public Integer getCode() {
            return code;
        }
 
        public String getName() {
            return name;
        }
    }
}

        <if test="cityName == @com.weather.weatherexpert.common.utils.CityClass@CityEnum.XINZHOU.getName"><!--wrong-->
            area_table
        </if>	

 <if test="cityName == @com.a.b.c.CityClass$CityEnum@XINZHOU.getName"><!--right-->
  name = #{username}
 </if>

<if test="dtEnum == @com.xxx.xxx.TestTypeEnum@HOUR">
  DATE_FORMAT(TM,'%Y-%m-%d %H') as keyStr,
</if>