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Java > Open Source Codes > org > archive > crawler > WebappLifecycle


1 /* WebappLifecycle
2  *
3  * Created on Oct 26, 2004
4  *
5  * Copyright (C) 2004 Internet Archive.
6  *
7  * This file is part of the Heritrix web crawler (crawler.archive.org).
8  *
9  * Heritrix is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU Lesser Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * any later version.
13  *
14  * Heritrix is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU Lesser Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser Public License
20  * along with Heritrix; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22  */

23 package org.archive.crawler;
24
25 import java.io.IOException JavaDoc;
26
27 import javax.servlet.ServletContextEvent JavaDoc;
28 import javax.servlet.ServletContextListener JavaDoc;
29
30
31 /**
32  * Calls start and stop of Heritrix when Heritrix is bundled as a webapp.
33  * @author stack
34  * @version $Date: 2005/11/17 00:55:56 $, $Revision: 1.5 $
35  */

36 public class WebappLifecycle implements ServletContextListener JavaDoc {
37     private Heritrix heritrix = null;
38     public void contextInitialized(ServletContextEvent JavaDoc sce) {
39         if (!Heritrix.isCommandLine()) {
40             try {
41                 this.heritrix = new Heritrix(true);
42             } catch (IOException JavaDoc e) {
43                 e.printStackTrace();
44             }
45             if (this.heritrix != null) {
46                 this.heritrix.start();
47             }
48         }
49     }
50
51     public void contextDestroyed(ServletContextEvent JavaDoc sce) {
52         if (this.heritrix != null) {
53             this.heritrix.destroy();
54             this.heritrix = null;
55         }
56     }
57 }
58
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