/*
 * Copyright 2002-2012 the original author or authors.
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 * 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
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 *      https://www.apache.org/licenses/LICENSE-2.0
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package org.springframework.scheduling;

import java.util.Date;

import org.springframework.lang.Nullable;

Common interface for trigger objects that determine the next execution time of a task that they get associated with.
Author:Juergen Hoeller
See Also:
Since:3.0
/** * Common interface for trigger objects that determine the next execution time * of a task that they get associated with. * * @author Juergen Hoeller * @since 3.0 * @see TaskScheduler#schedule(Runnable, Trigger) * @see org.springframework.scheduling.support.CronTrigger */
public interface Trigger {
Determine the next execution time according to the given trigger context.
Params:
  • triggerContext – context object encapsulating last execution times and last completion time
Returns:the next execution time as defined by the trigger, or null if the trigger won't fire anymore
/** * Determine the next execution time according to the given trigger context. * @param triggerContext context object encapsulating last execution times * and last completion time * @return the next execution time as defined by the trigger, * or {@code null} if the trigger won't fire anymore */
@Nullable Date nextExecutionTime(TriggerContext triggerContext); }