Mercurial > hg > digilib-old
comparison servlet/src/digilib/io/AliasingDocuDirCache.java @ 176:67ff8c7fecb9
Servlet version 1.17b2
- new mapping file for "virtual directories"
- direct file URLs now work without extension (even with wrong ones)
author | robcast |
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date | Mon, 10 Nov 2003 20:59:00 +0100 |
parents | |
children | afe7ff98bb71 |
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175:633947100c86 | 176:67ff8c7fecb9 |
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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.HashMap; | |
27 import java.util.Iterator; | |
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( | |
42 String[] baseDirs, | |
43 int[] fileClasses, | |
44 String confFileName) | |
45 throws FileOpException { | |
46 // create standard DocuDirCache | |
47 super(baseDirs, fileClasses); | |
48 HashMap pathMap = null; | |
49 // read alias config file | |
50 try { | |
51 // create data loader for mapping-file | |
52 File confFile = new File(confFileName); | |
53 // load into pathMap | |
54 XMLListLoader mapLoader = | |
55 new XMLListLoader("digilib-aliases", "mapping", "link", "dir"); | |
56 pathMap = mapLoader.loadURL(confFile.toURL().toString()); | |
57 } catch (Exception e) { | |
58 throw new FileOpException("ERROR loading mapping file: " + e); | |
59 } | |
60 if (pathMap == null) { | |
61 throw new FileOpException("ERROR unable to load mapping file!"); | |
62 } | |
63 | |
64 /* | |
65 * load map entries into cache | |
66 */ | |
67 | |
68 for (Iterator i = pathMap.keySet().iterator(); i.hasNext();) { | |
69 String link = (String)i.next(); | |
70 String dir = (String) pathMap.get(link); | |
71 DocuDirectory destDir = new DocuDirectory(dir, this); | |
72 if (destDir.isValid()) { | |
73 // add the alias name | |
74 putName(link, destDir); | |
75 // add the real dir | |
76 putDir(destDir); | |
77 } | |
78 } | |
79 } | |
80 | |
81 /** Adds a DocuDirectory under another name to the cache. | |
82 * | |
83 * @param name | |
84 * @param newdir | |
85 */ | |
86 public void putName(String name, DocuDirectory newdir) { | |
87 if (map.containsKey(name)) { | |
88 System.out.println("Baah, duplicate key in AliasingDocuDirCache.put!"); | |
89 } else { | |
90 map.put(name, newdir); | |
91 } | |
92 } | |
93 | |
94 } |