1 /**
2 * Copyright 2005-2013 The Kuali Foundation
3 *
4 * Licensed under the Educational Community License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.opensource.org/licenses/ecl2.php
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.kuali.rice.kew.engine.node.var.schemes;
17
18 import java.io.IOException;
19 import java.io.InputStream;
20
21 import org.apache.log4j.Logger;
22 import org.kuali.rice.kew.engine.RouteContext;
23 import org.kuali.rice.kew.engine.node.PropertiesUtil;
24 import org.kuali.rice.kew.engine.node.var.Property;
25 import org.kuali.rice.kew.engine.node.var.PropertyScheme;
26
27
28 /**
29 * A property scheme that loads resources from the class loader.
30 *
31 * @author Kuali Rice Team (rice.collab@kuali.org)
32 */
33 public class ResourceScheme implements PropertyScheme {
34 private static final Logger LOG = Logger.getLogger(ResourceScheme.class);
35
36 public String getName() {
37 return "resource";
38 }
39 public String getShortName() {
40 return "res";
41 }
42
43 public Object load(Property property, RouteContext context) {
44 String resource;
45 boolean relative = false;
46 // if (property.locator.startsWith("/")) {
47 resource = property.locator;
48 // } else {
49 // relative = true;
50 // String prefix;
51 // /* if a resource prefix is set, use it */
52 // if (state.getResourcePrefix() != null) {
53 // prefix = state.getResourcePrefix();
54 // } else {
55 // /* otherwise use the location of the Script class */
56 // prefix = Script.class.getPackage().getName().replace('.', '/');
57 // }
58 // if (!prefix.endsWith("/")) {
59 // prefix += "/";
60 // }
61 // resource = prefix + property.locator;
62 // }
63 String resStr = property.locator + (relative ? "(" + resource + ")" : "");
64 LOG.info("Reading resource " + resStr + "...");
65
66 InputStream is = getClass().getResourceAsStream(resource);
67 if (is == null) {
68 throw new RuntimeException("Resource not found: " + resStr);
69 }
70 try {
71 return PropertiesUtil.readResource(is);
72 } catch (IOException ioe) {
73 throw new RuntimeException("Error loading resource: " + resStr, ioe);
74 }
75 }
76
77 public String toString() {
78 return "[ResourceScheme]";
79 }
80 }