001/**
002 * Copyright 2005-2015 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 */
016package org.kuali.rice.kim.api.identity;
017
018import org.apache.commons.collections.CollectionUtils;
019import org.kuali.rice.core.api.mo.common.Defaultable;
020import org.kuali.rice.core.api.mo.common.active.Inactivatable;
021
022import java.util.Collection;
023
024public class EntityUtils {
025
026    private EntityUtils() {
027        throw new UnsupportedOperationException("do not call.");
028    }
029
030    public static <T extends Defaultable & Inactivatable> T getDefaultItem( Collection<T> collection ) {
031                // find the default entry
032        if (CollectionUtils.isEmpty(collection)) {
033            return null;
034        }
035                for ( T item : collection ) {
036                        if ( item.isDefaultValue() && item.isActive() ) {
037                                return (T)item;
038                        }
039                }
040                // if no default, return the first
041                for ( T item : collection ) {
042                    return item;
043                }
044                // if neither, return null
045                return null;
046        }
047}