/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.ignite.internal.processors.platform.cache.expiry;
import javax.cache.expiry.Duration;
import javax.cache.expiry.ExpiryPolicy;
import java.util.concurrent.TimeUnit;
/**
* Platform expiry policy.
*/
public class PlatformExpiryPolicy implements ExpiryPolicy {
/** Duration: unchanged. */
private static final long DUR_UNCHANGED = -2;
/** Duration: eternal. */
private static final long DUR_ETERNAL = -1;
/** Duration: zero. */
private static final long DUR_ZERO = 0;
/** Expiry for create. */
private final Duration create;
/** Expiry for update. */
private final Duration update;
/** Expiry for access. */
private final Duration access;
/**
* Constructor.
*
* @param create Expiry for create.
* @param update Expiry for update.
* @param access Expiry for access.
*/
public PlatformExpiryPolicy(long create, long update, long access) {
this.create = convert(create);
this.update = convert(update);
this.access = convert(access);
}
/** {@inheritDoc} */
@Override public Duration getExpiryForCreation() {
return create;
}
/** {@inheritDoc} */
@Override public Duration getExpiryForUpdate() {
return update;
}
/** {@inheritDoc} */
@Override public Duration getExpiryForAccess() {
return access;
}
/**
* Convert encoded duration to actual duration.
*
* @param dur Encoded duration.
* @return Actual duration.
*/
private static Duration convert(long dur) {
if (dur == DUR_UNCHANGED)
return null;
else if (dur == DUR_ETERNAL)
return Duration.ETERNAL;
else if (dur == DUR_ZERO)
return Duration.ZERO;
else {
assert dur > 0;
return new Duration(TimeUnit.MILLISECONDS, dur);
}
}
}