cn.jiangzeyin.cache.CacheInfo Maven / Gradle / Ivy
package cn.jiangzeyin.cache;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;
import static cn.jiangzeyin.cache.ObjectCache.DEFAULT_CACHE_TIME;
/**
* 缓存信息实体
* Created by jiangzeyin on 2017/12/12.
*/
class CacheInfo {
private final String key;
// 秒
private long cacheTime;
CacheInfo(String key, long cacheTime) {
this.key = key;
this.cacheTime = cacheTime;
}
void setCacheTime(long cacheTime) {
this.cacheTime = cacheTime;
}
String getKey() {
return key;
}
long getCacheTime() {
return cacheTime;
}
static Map loadClass(Class cls) throws IllegalAccessException {
if (cls == null) throw new NullPointerException();
Map map = new HashMap<>();
CacheConfig cacheConfig = (CacheConfig) cls.getAnnotation(CacheConfig.class);
Field[] fields = cls.getFields();
for (Field field : fields) {
if (field.getType() != String.class)
continue;
if (!Modifier.isStatic(field.getModifiers()))
continue;
if (!Modifier.isFinal(field.getModifiers()))
continue;
CacheConfigField cacheConfigField = field.getAnnotation(CacheConfigField.class);
String key = (String) field.get(null);
if (cacheConfigField == null) {
// 秒
long cacheTime = cacheConfig != null ? cacheConfig.UNIT().toSeconds(cacheConfig.value()) : DEFAULT_CACHE_TIME;
CacheInfo cacheInfo = new CacheInfo(key, cacheTime);
map.put(key, cacheInfo);
} else {
// 秒
CacheInfo cacheInfo = new CacheInfo(key, cacheConfigField.UNIT().toSeconds(cacheConfigField.value()));
map.put(key, cacheInfo);
}
}
return map;
}
}