001/*
002 * Copyright 2002-2013 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.scheduling.config;
018
019import org.springframework.scheduling.support.CronTrigger;
020
021/**
022 * {@link TriggerTask} implementation defining a {@code Runnable} to be executed according
023 * to a {@linkplain org.springframework.scheduling.support.CronSequenceGenerator standard
024 * cron expression}.
025 *
026 * @author Chris Beams
027 * @since 3.2
028 * @see org.springframework.scheduling.annotation.Scheduled#cron()
029 * @see ScheduledTaskRegistrar#setCronTasksList(java.util.List)
030 * @see org.springframework.scheduling.TaskScheduler
031 */
032public class CronTask extends TriggerTask {
033
034        private final String expression;
035
036
037        /**
038         * Create a new {@code CronTask}.
039         * @param runnable the underlying task to execute
040         * @param expression cron expression defining when the task should be executed
041         */
042        public CronTask(Runnable runnable, String expression) {
043                this(runnable, new CronTrigger(expression));
044        }
045
046        /**
047         * Create a new {@code CronTask}.
048         * @param runnable the underlying task to execute
049         * @param cronTrigger the cron trigger defining when the task should be executed
050         */
051        public CronTask(Runnable runnable, CronTrigger cronTrigger) {
052                super(runnable, cronTrigger);
053                this.expression = cronTrigger.getExpression();
054        }
055
056
057        public String getExpression() {
058                return this.expression;
059        }
060
061}