001 /**
002 * Copyright 2005-2014 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package org.kuali.rice.kns.web.struts.action;
017
018 import org.apache.commons.lang.StringUtils;
019 import org.apache.struts.util.MessageResources;
020 import org.apache.struts.util.PropertyMessageResourcesFactory;
021 import org.kuali.rice.core.api.config.property.ConfigContext;
022 import org.kuali.rice.krad.util.KRADConstants;
023
024 /**
025 * A custom MessageResourceFactory that delegates to the ConfigurationService's pre-loaded properties.
026 *
027 * <p>
028 * This factory can be used in struts-config.xml files by specifying a factory attribute in the <message-resources/>
029 * tag
030 *
031 * Example:
032 * <message-resources
033 * factory="KualiPropertyMessageResourcesFactory"
034 * parameter="SampleApplicationResources" />
035 * </p>
036 *
037 * @author Kuali Rice Team (rice.collab@kuali.org)
038 */
039 public class KualiPropertyMessageResourcesFactory extends PropertyMessageResourcesFactory {
040 private static final long serialVersionUID = 9045578011738154255L;
041
042 /**
043 * Uses KualiPropertyMessageResources, which allows multiple property files to be loaded into the default message
044 * set
045 *
046 * @see org.apache.struts.util.MessageResourcesFactory#createResources(java.lang.String)
047 */
048 @Override
049 public MessageResources createResources(String config) {
050 if (StringUtils.isBlank(config)) {
051 final String propertyConfig = (String) ConfigContext.getCurrentContextConfig().getProperties().get(
052 KRADConstants.MESSAGE_RESOURCES);
053 config = removeSpacesAround(propertyConfig);
054 }
055
056 return new KualiPropertyMessageResources(this, config, this.returnNull);
057 }
058
059 /**
060 * Removes the spaces around the elements on a csv list of elements
061 *
062 * <p>
063 * A null input will return a null output.
064 * </p>
065 *
066 * @param csv a list of elements in csv format e.g. foo, bar, baz
067 * @return a list of elements in csv format without spaces e.g. foo,bar,baz
068 */
069 private String removeSpacesAround(String csv) {
070 if (csv == null) {
071 return null;
072 }
073
074 final StringBuilder result = new StringBuilder();
075 for (final String value : csv.split(",")) {
076 if (!"".equals(value.trim())) {
077 result.append(value.trim());
078 result.append(",");
079 }
080 }
081
082 //remove trailing comma
083 int i = result.lastIndexOf(",");
084 if (i != -1) {
085 result.deleteCharAt(i);
086 }
087
088 return result.toString();
089 }
090
091 }