/*
 * Copyright 2002-2020 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,
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 * See the License for the specific language governing permissions and
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package org.springframework.scheduling;

import java.time.Clock;
import java.util.Date;

import org.springframework.lang.Nullable;

Context object encapsulating last execution times and last completion time of a given task.
Author:Juergen Hoeller
Since:3.0
/** * Context object encapsulating last execution times and last completion time * of a given task. * * @author Juergen Hoeller * @since 3.0 */
public interface TriggerContext {
Return the clock to use for trigger calculation.
See Also:
Since:5.3
/** * Return the clock to use for trigger calculation. * @since 5.3 * @see TaskScheduler#getClock() * @see Clock#systemDefaultZone() */
default Clock getClock() { return Clock.systemDefaultZone(); }
Return the last scheduled execution time of the task, or null if not scheduled before.
/** * Return the last <i>scheduled</i> execution time of the task, * or {@code null} if not scheduled before. */
@Nullable Date lastScheduledExecutionTime();
Return the last actual execution time of the task, or null if not scheduled before.
/** * Return the last <i>actual</i> execution time of the task, * or {@code null} if not scheduled before. */
@Nullable Date lastActualExecutionTime();
Return the last completion time of the task, or null if not scheduled before.
/** * Return the last completion time of the task, * or {@code null} if not scheduled before. */
@Nullable Date lastCompletionTime(); }