1 /**
2 * This file Copyright (c) 2009-2015 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.imaging.parameters;
35
36 import info.magnolia.cms.core.HierarchyManager;
37 import info.magnolia.context.MgnlContext;
38 import info.magnolia.imaging.ParameterProvider;
39 import info.magnolia.imaging.ParameterProviderFactory;
40 import info.magnolia.imaging.util.PathSplitter;
41
42 import javax.jcr.RepositoryException;
43 import javax.servlet.http.HttpServletRequest;
44
45 /**
46 * Superclass for ParameterProviderFactories that are based on Workspace and Path.
47 *
48 * @param <PT> type of ParameterProvider's parameter
49 *
50 * @version $Id$
51 */
52 public abstract class AbstractWorkspaceAndPathParameterProviderFactory<PT> implements ParameterProviderFactory<HttpServletRequest, PT> {
53
54 private boolean trimExtension = true;
55
56 @Override
57 public ParameterProvider<PT> newParameterProviderFor(HttpServletRequest req) {
58 String pathInfo = req.getPathInfo();
59 if (pathInfo == null) {
60 throw new IllegalArgumentException("Can't determine node, no pathInfo is available for uri " + req.getRequestURI());
61 }
62
63 // TODO - here we assume that the first path element is the ImageGenerator name, which is in fact something that is currently the business of the ImagingServlet.
64 // Can we do better ?
65 final PathSplitter pathSplitter = new PathSplitter(pathInfo, trimExtension);
66 if (pathSplitter.count() < 2) {
67 throw new IllegalArgumentException("Can't determine node from pathInfo: " + pathInfo);
68
69 }
70 final String workspaceName = pathSplitter.skipTo(1);
71 final String path = "/" + pathSplitter.remaining();
72
73 try {
74 final HierarchyManager hm = MgnlContext.getHierarchyManager(workspaceName);
75 return newParameterProviderForPath(hm, path);
76 } catch (RepositoryException e) {
77 throw new RuntimeException("Can't load source from " + path + " from workspace " + workspaceName, e); // TODO
78 }
79 }
80
81 protected abstract ParameterProvider<PT> newParameterProviderForPath(final HierarchyManager hm, final String path) throws RepositoryException;
82
83 public void setTrimExtension(boolean trimExtension) {
84 this.trimExtension = trimExtension;
85 }
86
87 }