| /* |
| * 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.sling.portal.cache; |
| |
| |
| /** |
| * A simple payload wrapper for the cache to record when it expires. |
| * |
| * @param <V> |
| */ |
| public class Payload<V> { |
| |
| private long ttiEnd; |
| private long ttlEnd; |
| private long tti; |
| private V payload; |
| |
| /** |
| * Create the payload |
| * @param payload the payload itself |
| * @param timeToIdleSeconds how many seconds the payload can be idle for before it becomes invalid. |
| * @param timeToLiveSeconds how many seconds the payload can be live for. |
| */ |
| public Payload(V payload, long timeToIdleSeconds, |
| long timeToLiveSeconds) { |
| this.payload = payload; |
| long t = System.currentTimeMillis(); |
| tti = timeToIdleSeconds+1000; |
| ttiEnd = t+tti; |
| ttlEnd = t+timeToLiveSeconds*1000; |
| } |
| |
| /** |
| * @return the payload if its still valid. |
| */ |
| public V get() { |
| long t = System.currentTimeMillis(); |
| if ( t > ttiEnd ) { |
| return null; |
| } |
| if ( t > ttlEnd ) { |
| return null; |
| } |
| ttiEnd = t + tti; |
| return payload; |
| } |
| |
| } |