1 /**
2 * Copyright 2005-2011 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.kim.api.identity;
17
18 import org.apache.commons.collections.CollectionUtils;
19 import org.kuali.rice.core.api.mo.common.Defaultable;
20 import org.kuali.rice.core.api.mo.common.active.Inactivatable;
21
22 import java.util.Collection;
23
24 public class EntityUtils {
25
26 private EntityUtils() {
27 throw new UnsupportedOperationException("do not call.");
28 }
29
30 public static <T extends Defaultable & Inactivatable> T getDefaultItem( Collection<T> collection ) {
31 // find the default entry
32 if (CollectionUtils.isEmpty(collection)) {
33 return null;
34 }
35 for ( T item : collection ) {
36 if ( item.isDefaultValue() && item.isActive() ) {
37 return (T)item;
38 }
39 }
40 // if no default, return the first
41 for ( T item : collection ) {
42 return item;
43 }
44 // if neither, return null
45 return null;
46 }
47 }