spring CronTask 源码
spring CronTask 代码
文件路径：/spring-context/src/main/java/org/springframework/scheduling/config/CronTask.java
/*
* Copyright 2002-2021 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.scheduling.config;
import org.springframework.scheduling.support.CronTrigger;
/**
* {@link TriggerTask} implementation defining a {@code Runnable} to be executed according
* to a {@linkplain org.springframework.scheduling.support.CronExpression#parse(String)
* standard cron expression}.
*
* @author Chris Beams
* @since 3.2
* @see org.springframework.scheduling.annotation.Scheduled#cron()
* @see ScheduledTaskRegistrar#addCronTask(CronTask)
*/
public class CronTask extends TriggerTask {
private final String expression;
/**
* Create a new {@code CronTask}.
* @param runnable the underlying task to execute
* @param expression the cron expression defining when the task should be executed
*/
public CronTask(Runnable runnable, String expression) {
this(runnable, new CronTrigger(expression));
}
/**
* Create a new {@code CronTask}.
* @param runnable the underlying task to execute
* @param cronTrigger the cron trigger defining when the task should be executed
*/
public CronTask(Runnable runnable, CronTrigger cronTrigger) {
super(runnable, cronTrigger);
this.expression = cronTrigger.getExpression();
}
/**
* Return the cron expression defining when the task should be executed.
*/
public String getExpression() {
return this.expression;
}
}
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