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comparison common/src/main/java/digilib/io/AliasingDocuDirCache.java @ 903:7779b37d1d05

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refactored into maven modules per servlet type. can build servlet-api 2.3 and 3.0 via profile now!
author robcast
date Tue, 26 Apr 2011 20:24:31 +0200
parents servlet/src/main/java/digilib/io/AliasingDocuDirCache.java@ba1eb2d821a2
children
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902:89ba3ffcf552 903:7779b37d1d05
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.Map;
27 import java.util.Map.Entry;
28
29 import digilib.io.FileOps.FileClass;
30 import digilib.servlet.DigilibConfiguration;
31 import digilib.util.XMLListLoader;
32
33 /**
34 * @author casties
35 *
36 */
37 public class AliasingDocuDirCache extends DocuDirCache {
38
39 /**
40 * @param baseDirs
41 * @param fcs
42 * @param confFileName
43 * @throws FileOpException
44 */
45 public AliasingDocuDirCache(String[] baseDirs, FileClass[] fcs,
46 File confFile, DigilibConfiguration dlConfig)
47 throws FileOpException {
48 // create standard DocuDirCache
49 super(baseDirs, fcs, dlConfig);
50 Map<String,String> pathMap = null;
51 // read alias config file
52 try {
53 // load into pathMap
54 XMLListLoader mapLoader = new XMLListLoader("digilib-aliases",
55 "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 (Entry<String, String> linkdir: pathMap.entrySet()) {
69 if (linkdir.getValue() == null) {
70 logger.error("Key mismatch in mapping file!");
71 break;
72 }
73 DocuDirectory destDir = new DocuDirectory(linkdir.getValue(), this);
74 if (destDir.isValid()) {
75 logger.debug("Aliasing dir: " + linkdir.getKey());
76 // add the alias name
77 putName(FileOps.normalName(linkdir.getKey()), destDir);
78 // add the real dir
79 putDir(destDir);
80 }
81 }
82 }
83
84 /**
85 * Adds a DocuDirectory under another name to the cache.
86 *
87 * @param name
88 * @param newdir
89 */
90 public void putName(String name, DocuDirectory newdir) {
91 if (map.containsKey(name)) {
92 logger.warn("Duplicate key in AliasingDocuDirCache.put -- ignored!");
93 } else {
94 map.put(name, newdir);
95 }
96 }
97
98 }