Mercurial > hg > digilib-old
comparison servlet/src/digilib/io/AliasingDocuDirCache.java @ 339:6d2032b6121d gen2_1
new directory and cache work
author | robcast |
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date | Wed, 17 Nov 2004 18:17:34 +0100 |
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3:794a9f25f15c | 339:6d2032b6121d |
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1 /* | |
2 * AliasingDocuDirCache -- DocuDirCache using alias entries from config file | |
3 * | |
4 * Digital Image Library servlet components | |
5 * | |
6 * Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de) | |
7 * | |
8 * This program is free software; you can redistribute it and/or modify it | |
9 * under the terms of the GNU General Public License as published by the Free | |
10 * Software Foundation; either version 2 of the License, or (at your option) | |
11 * any later version. | |
12 * | |
13 * Please read license.txt for the full details. A copy of the GPL may be found | |
14 * at http://www.gnu.org/copyleft/lgpl.html | |
15 * | |
16 * You should have received a copy of the GNU General Public License along with | |
17 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
18 * Place, Suite 330, Boston, MA 02111-1307 USA | |
19 * | |
20 * Created on 04.11.2003 | |
21 */ | |
22 | |
23 package digilib.io; | |
24 | |
25 import java.io.File; | |
26 import java.util.Iterator; | |
27 import java.util.Map; | |
28 | |
29 /** | |
30 * @author casties | |
31 * | |
32 */ | |
33 public class AliasingDocuDirCache extends DocuDirCache { | |
34 | |
35 /** | |
36 * @param baseDirs | |
37 * @param fileClasses | |
38 * @param confFileName | |
39 * @throws FileOpException | |
40 */ | |
41 public AliasingDocuDirCache(File confFile) throws FileOpException { | |
42 // create standard DocuDirCache | |
43 super(); | |
44 Map pathMap = null; | |
45 // read alias config file | |
46 try { | |
47 // load into pathMap | |
48 XMLListLoader mapLoader = new XMLListLoader("digilib-aliases", | |
49 "mapping", "link", "dir"); | |
50 pathMap = mapLoader.loadURL(confFile.toURL().toString()); | |
51 } catch (Exception e) { | |
52 throw new FileOpException("ERROR loading mapping file: " + e); | |
53 } | |
54 if (pathMap == null) { | |
55 throw new FileOpException("ERROR: unable to load mapping file!"); | |
56 } | |
57 | |
58 /* | |
59 * load map entries into cache | |
60 */ | |
61 | |
62 for (Iterator i = pathMap.keySet().iterator(); i.hasNext();) { | |
63 String link = FileOps.normalName((String) i.next()); | |
64 String dn = (String) pathMap.get(link); | |
65 File dir = FileOps.getRealFile(dn); | |
66 if (dir.isDirectory()) { | |
67 logger.debug("Aliasing dir: " + link); | |
68 DigiDirectory destDir = new DigiDirectory(dir, dn, null); | |
69 // add the alias name | |
70 putName(link, destDir); | |
71 // add the real dir | |
72 putDir(destDir); | |
73 } | |
74 } | |
75 } | |
76 | |
77 /** | |
78 * Adds a DocuDirectory under another name to the cache. | |
79 * | |
80 * @param name | |
81 * @param newdir | |
82 */ | |
83 public void putName(String name, DigiDirectory newdir) { | |
84 Object oldkey = map.put(name, newdir); | |
85 if (oldkey != null) { | |
86 logger | |
87 .warn("Duplicate key in AliasingDocuDirCache.put -- replaced!"); | |
88 } | |
89 } | |
90 | |
91 } |