001package org.cache2k;
002
003/*
004 * #%L
005 * cache2k API only package
006 * %%
007 * Copyright (C) 2000 - 2016 headissue GmbH, Munich
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 * 
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 * 
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023/**
024 * If object implements {@link ValueWithNextRefreshTime} then the next refresh time
025 * is fetched from the object. If not, the default linger time is used by the cache.
026 *
027 * @author Jens Wilke; created: 2013-05-02
028 * @deprecated Use {@link org.cache2k.ValueWithExpiryTime#AUTO_EXPIRY}
029 */
030public final class AutoEntryRefreshController<T> implements RefreshController<T> {
031
032  public static final AutoEntryRefreshController INSTANCE = new AutoEntryRefreshController();
033
034  @Override
035  public long calculateNextRefreshTime(
036    T _oldObject,
037    T _newObject,
038    long _timeOfLastRefresh, long now) {
039    if (_newObject instanceof ValueWithNextRefreshTime) {
040      return ((ValueWithNextRefreshTime) _newObject).getNextRefreshTime();
041    }
042    return Long.MAX_VALUE;
043  }
044
045}