1 /**
2 * This file Copyright (c) 2008-2012 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.module.templatingkit.dam;
35
36 import info.magnolia.cms.core.Content;
37 import info.magnolia.cms.util.NodeDataUtil;
38 import info.magnolia.dam.asset.Asset;
39 import info.magnolia.dam.asset.AssetNotFoundException;
40 import info.magnolia.dam.asset.DamException;
41 import info.magnolia.objectfactory.Components;
42
43 import java.util.LinkedHashMap;
44 import java.util.Map;
45
46 import org.apache.commons.lang.StringUtils;
47 import org.slf4j.Logger;
48 import org.slf4j.LoggerFactory;
49
50 /**
51 * DAM support class.
52 *
53 * @version $Id$
54 */
55 public class DAMSupport {
56
57 public static String VARIATION_ORIGINAL = "original";
58
59 private Map<String, DAMHandler> handlers = new LinkedHashMap<String, DAMHandler>();
60
61 private static Logger log = LoggerFactory.getLogger(DAMSupport.class);
62
63 public static DAMSupport getInstance() {
64 try {
65 return Components.getComponent(DAMSupport.class);
66 } catch (Exception e) {
67 // if not defined skip and return null
68 log.info("Class DAMSupport not defined");
69 return null;
70 }
71 }
72
73 /**
74 * Gets the descriptor of your asset (video/image + attributes) after using the right
75 * handler.
76 * @param nodeDataPrefix prefix of the node data that holds the asset value i.e.
77 * imageDmsUUID the prefix would be image
78 * @node
79 *
80 */
81 public Asset getAsset(Content node, String nodeDataPrefix) throws DamException {
82 String handlerName = NodeDataUtil.getString(node, nodeDataPrefix);
83 final String path = node.getHandle() + "/" + nodeDataPrefix;
84 if(StringUtils.isEmpty(handlerName)){
85 throw new AssetNotFoundException("No handler defined for " + path);
86 }
87 final DAMHandler handler = handlers.get(handlerName);
88 if(handler == null){
89 throw new DamException("No handler found with name [" + handlerName + "] for [" + path + "]");
90 }
91 return handler.getAsset(node, nodeDataPrefix);
92 }
93
94 /**
95 * Gets only the handlers with parameter enabled set to true.
96 */
97 public Map<String, DAMHandler> getHandlers() {
98 return handlers;
99 }
100
101 public void setHandlers(Map<String, DAMHandler> handlers) {
102 this.handlers = handlers;
103 }
104
105 public void addHandler(String name, DAMHandler damHandler) {
106 if(damHandler.isEnabled()) {
107 this.handlers.put(name, damHandler);
108 }
109 }
110
111 public DAMHandler getHandler(String name) {
112 return handlers.get(name);
113 }
114
115 }
116