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nl.toolforge.karma.core.manifest.ManifestCollector	0%	0%

1		/*
2		Karma core - Core of the Karma application
3		Copyright (C) 2004 Toolforge <www.toolforge.nl>
4
5		This library is free software; you can redistribute it and/or
6		modify it under the terms of the GNU Lesser General Public
7		License as published by the Free Software Foundation; either
8		version 2.1 of the License, or (at your option) any later version.
9
10		This library is distributed in the hope that it will be useful,
11		but WITHOUT ANY WARRANTY; without even the implied warranty of
12		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13		Lesser General Public License for more details.
14
15		You should have received a copy of the GNU Lesser General Public
16		License along with this library; if not, write to the Free Software
17		Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18		*/
19		package nl.toolforge.karma.core.manifest;
20
21		import nl.toolforge.core.util.file.XMLFilenameFilter;
22		import nl.toolforge.karma.core.boot.WorkingContext;
23		import nl.toolforge.karma.core.location.LocationException;
24		import org.apache.commons.logging.Log;
25		import org.apache.commons.logging.LogFactory;
26
27		import java.io.File;
28		import java.util.ArrayList;
29		import java.util.Arrays;
30		import java.util.Collection;
31		import java.util.HashSet;
32		import java.util.prefs.Preferences;
33
34		/**
35		* Class that collects all manifests for a <code>WorkingContext</code>.
36		*
37		* @author D.A. Smedes
38		* @version $Id: ManifestCollector.java,v 1.17 2004/11/03 20:54:15 asmedes Exp $
39		*/
40		public class ManifestCollector {
41
42	0	private static Log logger = LogFactory.getLog(ManifestCollector.class);
43
44	0	private Collection manifests = new ArrayList();
45	0	private WorkingContext workingContext = null;
46
47	0	public ManifestCollector(WorkingContext workingContext) {
48	0	this.workingContext = workingContext;
49	0	}
50
51		/**
52		* Returns a collection of manifest file names, located in the the manifest store.
53		*
54		* @return
55		*/
56		public Collection getAllManifests() {
57	0	File manifestStore = workingContext.getConfiguration().getManifestStore().getModule().getBaseDir();
58
59	0	Object[] mList = manifestStore.list(new XMLFilenameFilter());
60
61	0	if (mList == null) {
62	0	return new ArrayList();
63		}
64	0	manifests = Arrays.asList(mList);
65	0	if (manclass="keyword">ifests.size() == 0) {
66	0	return new ArrayList();
67		}
68
69	0	return manifests;
70		}
71
72		public synchronized void refresh() {
73	0	init();
74	0	}
75
76		/**
77		* Retrieves the last used manifest or <code>null</code> when none was found.
78		*
79		* @return The last used manifest.
80		* @throws ManifestException When the manifest referred to by {@link Manifest.HISTORY_KEY} could not be loaded.
81		*/
82		public Manifest loadManifestFromHistory() throws LocationException, ManifestException {
83
84	0	String contextManifest = workingContext.getContextManifestPreference();
85
86	0	String manifestId = Preferences.userRoot().get(contextManifest, null);
87	0	if (manclass="keyword">ifestId != null) {
88
89	0	ManifestFactory manifestFactory = new ManifestFactory();
90	0	ManifestLoader loader = new ManifestLoader(workingContext);
91	0	Manifest manifest = manifestFactory.create(workingContext, loader.load(manifestId));
92
93	0	return manifest;
94		}
95
96	0	return null;
97		}
98
99		private synchronized void init() {
100	0	manifests = new HashSet();
101	0	}
102		}

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