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/* |
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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.core.cache.base; |
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import cn.hutool.cache.impl.CacheObj; |
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import cn.hutool.cache.impl.TimedCache; |
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import cn.hutool.core.collection.CollectionUtil; |
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import cn.hutool.core.util.StrUtil; |
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import vip.xiaonuo.core.cache.CacheOperator; |
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import java.util.*; |
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/** |
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* 基于内存的缓存封装 |
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* |
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* @author yubaoshan |
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* @date 2020/7/9 10:09 |
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*/ |
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public abstract class AbstractMemoryCacheOperator<T> implements CacheOperator<T> { |
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private final TimedCache<String, T> timedCache; |
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public AbstractMemoryCacheOperator(TimedCache<String, T> timedCache) { |
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this.timedCache = timedCache; |
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} |
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@Override |
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public void put(String key, T value) { |
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timedCache.put(getCommonKeyPrefix() + key, value); |
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} |
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@Override |
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public void put(String key, T value, Long timeoutSeconds) { |
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timedCache.put(getCommonKeyPrefix() + key, value, timeoutSeconds * 1000); |
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} |
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@Override |
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public T get(String key) { |
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// 如果用户在超时前调用了get(key)方法,会重头计算起始时间,false的作用就是不从头算 |
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return timedCache.get(getCommonKeyPrefix() + key, true); |
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} |
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@Override |
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public void remove(String... key) { |
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if (key.length > 0) { |
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for (String itemKey : key) { |
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timedCache.remove(getCommonKeyPrefix() + itemKey); |
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} |
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} |
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} |
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@Override |
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public Collection<String> getAllKeys() { |
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Iterator<CacheObj<String, T>> cacheObjIterator = timedCache.cacheObjIterator(); |
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ArrayList<String> keys = CollectionUtil.newArrayList(); |
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while (cacheObjIterator.hasNext()) { |
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// 去掉缓存key的common prefix前缀 |
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String key = cacheObjIterator.next().getKey(); |
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keys.add(StrUtil.removePrefix(key, getCommonKeyPrefix())); |
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} |
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return keys; |
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} |
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@Override |
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public Collection<T> getAllValues() { |
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Iterator<CacheObj<String, T>> cacheObjIterator = timedCache.cacheObjIterator(); |
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ArrayList<T> values = CollectionUtil.newArrayList(); |
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while (cacheObjIterator.hasNext()) { |
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values.add(cacheObjIterator.next().getValue()); |
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} |
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return values; |
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} |
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@Override |
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public Map<String, T> getAllKeyValues() { |
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Collection<String> allKeys = this.getAllKeys(); |
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HashMap<String, T> results = CollectionUtil.newHashMap(); |
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for (String key : allKeys) { |
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results.put(key, this.get(key)); |
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} |
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return results; |
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} |
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} |