/** 取一个缓存 */
public <F> V hget(K key, F field) {
readLock.lock();
try {
Map<?, CacheObject<K, V>> coMap = _hCache.get(key);
if (null == coMap) {
return null;
}
CacheObject<K, V> co = coMap.get(field);
if (null == co) {
return null;
}
if (co.isExpired() == true) {
coMap.remove(field);
return null;
}
return co.getValue();
} finally {
readLock.unlock();
}
}
/** 取一个缓存 */
public V get(K key) {
readLock.lock();
try {
CacheObject<K, V> co = _mCache.get(key);
if (co == null) {
return null;
}
if (co.isExpired() == true) {
_mCache.remove(key);
return null;
}
return co.getValue();
} finally {
readLock.unlock();
}
}
/** {@inheritDoc} */
public V get(K key) {
readLock.lock();
try {
CacheObject<K, V> co = cacheMap.get(key);
if (co == null) {
missCount++;
return null;
}
if (co.isExpired() == true) {
// remove(key); // can't upgrade the lock
cacheMap.remove(key);
missCount++;
return null;
}
hitCount++;
return co.getObject();
} finally {
readLock.unlock();
}
}
