/*
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Copyright [2020] [https://www.xiaonuo.vip]
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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Snowy采用APACHE LICENSE 2.0开源协议,您在使用过程中,需要注意以下几点:
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1.请不要删除和修改根目录下的LICENSE文件。
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2.请不要删除和修改Snowy源码头部的版权声明。
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3.请保留源码和相关描述文件的项目出处,作者声明等。
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4.分发源码时候,请注明软件出处 https://gitee.com/xiaonuobase/snowy
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5.在修改包名,模块名称,项目代码等时,请注明软件出处 https://gitee.com/xiaonuobase/snowy
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6.若您的项目无法满足以上几点,可申请商业授权,获取Snowy商业授权许可,请在官网购买授权,地址为 https://www.xiaonuo.vip
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*/
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package vip.xiaonuo.sys.core.cache;
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import cn.hutool.cache.impl.TimedCache;
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import vip.xiaonuo.core.cache.base.AbstractMemoryCacheOperator;
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import java.util.Map;
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/**
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* mapping是映射,指业务id和业务名称的映射,或字典code和字典值的映射
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* <p>
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* mapping的含义:
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* 指对接口响应字段转化(或完善)过程
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* <p>
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* 为什么要映射:
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* 一般在查询类的方法,响应结果如果需要返回详细的一些名称信息
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* 则需要通过left join关联对应明细表或字典表,通过id或者code查到对应的中文名称,这样做效率不高
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* <p>
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* 结论:
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* 利用缓存,将常用的字典或者业务id映射,保存起来
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* 一方面保证了查询速度,一方面简化了代码开发,不用写一些left join之类的sql
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*
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* @author xuyuxiang
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* @date 2020/7/24 11:59
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*/
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public class MappingCache extends AbstractMemoryCacheOperator<Map<String, Object>> {
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/**
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* 缓存的前缀标识
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*/
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public static final String MAPPING_CACHE_PREFIX = "MAPPINGS_";
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public MappingCache(TimedCache<String, Map<String, Object>> timedCache) {
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super(timedCache);
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}
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@Override
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public String getCommonKeyPrefix() {
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return MAPPING_CACHE_PREFIX;
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}
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}
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