1 /*
2 * Copyright 2005-2008 The Kuali Foundation
3 *
4 *
5 * Licensed under the Educational Community License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.opensource.org/licenses/ecl2.php
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.kuali.rice.kew.engine.node.var.schemes;
19
20 import java.io.IOException;
21 import java.io.InputStream;
22
23 import org.apache.log4j.Logger;
24 import org.kuali.rice.kew.engine.RouteContext;
25 import org.kuali.rice.kew.engine.node.PropertiesUtil;
26 import org.kuali.rice.kew.engine.node.var.Property;
27 import org.kuali.rice.kew.engine.node.var.PropertyScheme;
28
29
30 /**
31 * A property scheme that loads resources from the class loader.
32 *
33 * @author Kuali Rice Team (rice.collab@kuali.org)
34 */
35 public class ResourceScheme implements PropertyScheme {
36 private static final Logger LOG = Logger.getLogger(ResourceScheme.class);
37
38 public String getName() {
39 return "resource";
40 }
41 public String getShortName() {
42 return "res";
43 }
44
45 public Object load(Property property, RouteContext context) {
46 String resource;
47 boolean relative = false;
48 // if (property.locator.startsWith("/")) {
49 resource = property.locator;
50 // } else {
51 // relative = true;
52 // String prefix;
53 // /* if a resource prefix is set, use it */
54 // if (state.getResourcePrefix() != null) {
55 // prefix = state.getResourcePrefix();
56 // } else {
57 // /* otherwise use the location of the Script class */
58 // prefix = Script.class.getPackage().getName().replace('.', '/');
59 // }
60 // if (!prefix.endsWith("/")) {
61 // prefix += "/";
62 // }
63 // resource = prefix + property.locator;
64 // }
65 String resStr = property.locator + (relative ? "(" + resource + ")" : "");
66 LOG.info("Reading resource " + resStr + "...");
67
68 InputStream is = getClass().getResourceAsStream(resource);
69 if (is == null) {
70 throw new RuntimeException("Resource not found: " + resStr);
71 }
72 try {
73 return PropertiesUtil.readResource(is);
74 } catch (IOException ioe) {
75 throw new RuntimeException("Error loading resource: " + resStr, ioe);
76 }
77 }
78
79 public String toString() {
80 return "[ResourceScheme]";
81 }
82 }