1 /**
2 * Copyright 2005-2016 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.kns.web.struts.action;
17
18 import org.apache.commons.lang.StringUtils;
19 import org.apache.struts.util.MessageResources;
20 import org.apache.struts.util.PropertyMessageResourcesFactory;
21 import org.kuali.rice.core.api.config.property.ConfigContext;
22 import org.kuali.rice.krad.util.KRADConstants;
23
24 /**
25 * A custom MessageResourceFactory that delegates to the ConfigurationService's pre-loaded properties.
26 *
27 * <p>
28 * This factory can be used in struts-config.xml files by specifying a factory attribute in the <message-resources/>
29 * tag
30 *
31 * Example:
32 * <message-resources
33 * factory="KualiPropertyMessageResourcesFactory"
34 * parameter="SampleApplicationResources" />
35 * </p>
36 *
37 * @author Kuali Rice Team (rice.collab@kuali.org)
38 */
39 public class KualiPropertyMessageResourcesFactory extends PropertyMessageResourcesFactory {
40 private static final long serialVersionUID = 9045578011738154255L;
41
42 /**
43 * Uses KualiPropertyMessageResources, which allows multiple property files to be loaded into the default message
44 * set
45 *
46 * @see org.apache.struts.util.MessageResourcesFactory#createResources(java.lang.String)
47 */
48 @Override
49 public MessageResources createResources(String config) {
50 if (StringUtils.isBlank(config)) {
51 final String propertyConfig = (String) ConfigContext.getCurrentContextConfig().getProperties().get(
52 KRADConstants.MESSAGE_RESOURCES);
53 config = removeSpacesAround(propertyConfig);
54 }
55
56 return new KualiPropertyMessageResources(this, config, this.returnNull);
57 }
58
59 /**
60 * Removes the spaces around the elements on a csv list of elements
61 *
62 * <p>
63 * A null input will return a null output.
64 * </p>
65 *
66 * @param csv a list of elements in csv format e.g. foo, bar, baz
67 * @return a list of elements in csv format without spaces e.g. foo,bar,baz
68 */
69 private String removeSpacesAround(String csv) {
70 if (csv == null) {
71 return null;
72 }
73
74 final StringBuilder result = new StringBuilder();
75 for (final String value : csv.split(",")) {
76 if (!"".equals(value.trim())) {
77 result.append(value.trim());
78 result.append(",");
79 }
80 }
81
82 //remove trailing comma
83 int i = result.lastIndexOf(",");
84 if (i != -1) {
85 result.deleteCharAt(i);
86 }
87
88 return result.toString();
89 }
90
91 }