package com.ruoyi.common.core.mybatisplus.cache;
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import cn.hutool.extra.spring.SpringUtil;
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import com.ruoyi.common.utils.RedisUtils;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.ibatis.cache.Cache;
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import org.springframework.data.redis.connection.RedisServerCommands;
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import org.springframework.data.redis.core.RedisTemplate;
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import org.springframework.util.CollectionUtils;
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import java.util.Collection;
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import java.util.concurrent.locks.ReadWriteLock;
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import java.util.concurrent.locks.ReentrantReadWriteLock;
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/**
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* mybatis-redis 二级缓存
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*
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* 使用方法 配置文件开启 mybatis-plus 二级缓存
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* 在 XxxMapper.java 类上添加注解 @CacheNamespace(implementation = MybatisPlusRedisCache.class, eviction = MybatisPlusRedisCache.class)
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*
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* @deprecated 3.4.0删除 推荐使用spirng-cache
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* @author Lion Li
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*/
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@Slf4j
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public class MybatisPlusRedisCache implements Cache {
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private final ReadWriteLock readWriteLock = new ReentrantReadWriteLock(true);
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private String id;
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public MybatisPlusRedisCache(final String id) {
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if (id == null) {
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throw new IllegalArgumentException("Cache instances require an ID");
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}
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this.id = id;
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}
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@Override
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public String getId() {
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return this.id;
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}
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@Override
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public void putObject(Object key, Object value) {
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if (value != null) {
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RedisUtils.setCacheObject(key.toString(), value);
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}
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}
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@Override
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public Object getObject(Object key) {
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try {
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if (key != null) {
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return RedisUtils.getCacheObject(key.toString());
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}
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} catch (Exception e) {
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e.printStackTrace();
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log.error("缓存出错");
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}
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return null;
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}
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@Override
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public Object removeObject(Object key) {
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if (key != null) {
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RedisUtils.deleteObject(key.toString());
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}
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return null;
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}
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@Override
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public void clear() {
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log.debug("清空缓存");
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Collection<String> keys = RedisUtils.keys("*:" + this.id + "*");
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if (!CollectionUtils.isEmpty(keys)) {
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RedisUtils.deleteObject(keys);
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}
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}
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@Override
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public int getSize() {
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RedisTemplate<String, Object> redisTemplate = SpringUtil.getBean("redisTemplate");
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Long size = redisTemplate.execute(RedisServerCommands::dbSize);
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return size.intValue();
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}
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@Override
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public ReadWriteLock getReadWriteLock() {
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return this.readWriteLock;
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}
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}
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