001/*
002 * Copyright 2002-2012 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;
018
019import java.util.Date;
020
021import org.springframework.lang.Nullable;
022
023/**
024 * Context object encapsulating last execution times and last completion time
025 * of a given task.
026 *
027 * @author Juergen Hoeller
028 * @since 3.0
029 */
030public interface TriggerContext {
031
032        /**
033         * Return the last <i>scheduled</i> execution time of the task,
034         * or {@code null} if not scheduled before.
035         */
036        @Nullable
037        Date lastScheduledExecutionTime();
038
039        /**
040         * Return the last <i>actual</i> execution time of the task,
041         * or {@code null} if not scheduled before.
042         */
043        @Nullable
044        Date lastActualExecutionTime();
045
046        /**
047         * Return the last completion time of the task,
048         * or {@code null} if not scheduled before.
049         */
050        @Nullable
051        Date lastCompletionTime();
052
053}