001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.functor.aggregator; 018 019/** 020 * Listener to be used with instances of {@link AbstractTimedAggregator} to 021 * receive notifications when the timer kicks in. 022 * 023 * @param <T> 024 * Type of object the <code>Aggregator</code> is operating on. 025 */ 026public interface TimedAggregatorListener<T> { 027 /** 028 * Received when the aggregator listening to has triggered the timer. 029 * 030 * @param aggregator 031 * Aggregator which has triggered the time event in the first 032 * place. 033 * @param evaluation 034 * Current {@link AbstractTimedAggregator#evaluate() evaluation 035 * result} of the aggregator which triggered the event 036 */ 037 void onTimer(AbstractTimedAggregator<T> aggregator, T evaluation); 038}