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Java > Open Source Codes > org > quartz > StatefulJob


1
2 /*
3  * Copyright 2004-2005 OpenSymphony
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
6  * use this file except in compliance with the License. You may obtain a copy
7  * of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
13  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
14  * License for the specific language governing permissions and limitations
15  * under the License.
16  *
17  */
18
19 /*
20  * Previously Copyright (c) 2001-2004 James House
21  */
22 package org.quartz;
23
24 /**
25  * <p>
26  * A marker interface for <code>{@link org.quartz.JobDetail}</code> s that
27  * wish to have their state maintained between executions.
28  * </p>
29  *
30  * <p>
31  * <code>StatefulJob</code> instances follow slightly different rules from
32  * regular <code>Job</code> instances. The key difference is that their
33  * associated <code>{@link JobDataMap}</code> is re-persisted after every
34  * execution of the job, thus preserving state for the next execution. The
35  * other difference is that stateful jobs are not allowed to execute
36  * concurrently, which means new triggers that occur before the completion of
37  * the <code>execute(xx)</code> method will be delayed.
38  * </p>
39  *
40  * @see Job
41  * @see JobDetail
42  * @see JobDataMap
43  * @see Scheduler
44  *
45  * @author James House
46  */
47 public interface StatefulJob extends Job {
48
49     /*
50      * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
51      *
52      * Interface.
53      *
54      * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
55      */
56
57 }
58
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